{"title":"Denso","description":null,"products":[{"product_id":"denso-ik16-iridium-spark-plug-part-number-5303","title":"DENSO IK16 Iridium Spark Plug, Part Number 5303","description":"Iridium Spark Plug - IK16\n\u003cp\u003eThe DENSO IK16 Iridium Spark Plug, manufacturer part number 5303 and vendor part number 5303, is engineered to deliver dependable ignition performance for compatible automotive applications. Its iridium center electrode provides exceptional heat resistance, withstanding temperatures up to 4,000°F, while supporting consistent spark formation under demanding operating conditions. The fine 0.016-inch iridium electrode design helps reduce required firing voltage and promotes reliable ignition.\u003c\/p\u003e\u003cp\u003eDesigned for long-lasting performance, this DENSO spark plug uses 360-degree laser welding around the electrode to create a secure seal that resists wear, vibration, and harsh engine conditions. The tapered-cut ground electrode and U-groove configuration create a larger flame-center area, helping support efficient combustion and stable engine operation. These features make the IK16 a practical replacement for applications requiring a high-quality iridium spark plug.\u003c\/p\u003e\u003cp\u003eFor proper fitment, verify that the DENSO IK16, part number 5303, matches your vehicle’s year, make, model, engine, and original equipment specifications before installation. This spark plug is intended for compatible automotive ignition systems and should be installed according to the vehicle manufacturer’s service procedures. DENSO manufacturer and vendor part number 5303 provide a reliable reference when confirming application compatibility.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIridium Center Electrode: Withstands temperatures up to 4,000°F for dependable performance in demanding engine conditions.\u003c\/li\u003e\n\u003cli\u003eFine Electrode Design: Uses a 0.016-inch iridium electrode to help reduce firing voltage and improve ignition performance.\u003c\/li\u003e\n\u003cli\u003e360-Degree Laser Welding: Creates a secure electrode seal designed to resist wear and harsh operating conditions.\u003c\/li\u003e\n\u003cli\u003eTapered Ground Electrode: Helps concentrate the spark and support efficient flame development.\u003c\/li\u003e\n\u003cli\u003eU-Groove Ground Design: Provides a larger flame-center area for stable combustion.\u003c\/li\u003e\n\u003cli\u003eVehicle Fitment: Designed for compatible automotive applications; verify year, make, model, engine, and original equipment specifications before installation.\u003c\/li\u003e\n\u003cli\u003eBrand and Part Number: DENSO IK16, manufacturer and vendor part number 5303.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567379153131,"sku":"IK16","price":11.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34272.png?v=1790796199"},{"product_id":"denso-iu24a-iridium-spark-plug-part-number-5365","title":"DENSO IU24A Iridium Spark Plug, Part Number 5365","description":"Iridium Spark Plug - IU24A\n\u003cp\u003eThe DENSO IU24A Iridium Spark Plug is engineered for reliable ignition, efficient combustion, and long service life in compatible automotive and powersports applications. This spark plug uses a fine 0.4 mm iridium center electrode to help reduce required firing voltage while promoting consistent spark performance. Iridium withstands temperatures up to 4,000°F, providing durability under demanding operating conditions.\u003c\/p\u003e\u003cp\u003eDENSO applies 360-degree laser welding to the electrode assembly to create a secure seal that resists wear, including in severe heat and vibration environments. The ground electrode features a tapered cut and U-groove design that helps create a larger volume area around the flame center, supporting dependable ignition and improved combustion stability.\u003c\/p\u003e\u003cp\u003eDesigned for applications requiring the DENSO IU24A model and manufacturer part number 5365, this iridium spark plug is a direct replacement when specified by the vehicle or equipment manufacturer. Verify application fitment, heat range, thread specifications, and ignition system requirements before installation. The brand is DENSO, and the vendor part number is IU24A; the manufacturer part number is 5365.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIridium Electrode: Six times harder than platinum for enhanced durability and long-lasting performance.\u003c\/li\u003e\n\u003cli\u003eFine-Wire Center Electrode: The 0.4 mm electrode helps reduce voltage requirements and supports consistent firing.\u003c\/li\u003e\n\u003cli\u003eHigh-Temperature Resistance: Iridium material withstands temperatures up to 4,000°F for demanding applications.\u003c\/li\u003e\n\u003cli\u003eLaser-Welded Construction: 360-degree laser welding helps seal the electrode assembly against wear and harsh operating conditions.\u003c\/li\u003e\n\u003cli\u003eTapered Ground Electrode: Tapered-cut and U-groove design provides a larger flame-center volume area for dependable ignition.\u003c\/li\u003e\n\u003cli\u003eApplication Fitment: Intended for compatible vehicles and equipment specified for the DENSO IU24A spark plug, manufacturer part number 5365.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567379546347,"sku":"IU24A","price":16.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34364.png?v=1790796205"},{"product_id":"denso-iw24-iridium-spark-plug-part-number-5316","title":"DENSO IW24 Iridium Spark Plug, Part Number 5316","description":"Iridium Spark Plug - IW24\n\u003cp\u003eThe DENSO IW24 Iridium Spark Plug, manufacturer part number 5316 and vendor part number 5316, is engineered for dependable ignition performance in high-temperature automotive applications. Its iridium electrodes provide exceptional durability and allow for a fine electrode design that helps reduce voltage requirements while promoting consistent, efficient firing. The plug is designed for compatible engines requiring the DENSO IW24 model and should be selected according to the vehicle or equipment manufacturer’s specified fitment.\u003c\/p\u003e\u003cp\u003eFeature: Iridium electrode construction withstands temperatures up to 4,000°F for reliable performance under demanding operating conditions.\u003c\/p\u003e\u003cp\u003eFeature: Fine 0.4 mm electrode design helps lower required firing voltage and supports improved ignition performance.\u003c\/p\u003e\u003cp\u003eFeature: 360-degree laser-welded electrode construction creates a secure seal that resists wear in severe environments.\u003c\/p\u003e\u003cp\u003eFeature: Tapered-cut ground electrode and U-groove design create a larger flame-center area for dependable combustion.\u003c\/p\u003e\u003cp\u003eBefore installation, verify that the DENSO IW24 model and part number 5316 match the engine application, required heat range, and manufacturer recommendations. Proper fitment and installation are essential for maintaining ignition reliability and preventing damage to the plug or engine. This DENSO spark plug is suited for replacement applications where long service life, stable ignition, and resistance to demanding temperatures are required.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIridium electrode construction withstands temperatures up to 4,000°F\u003c\/li\u003e\n\u003cli\u003eFine 0.4 mm electrode design helps reduce firing voltage requirements\u003c\/li\u003e\n\u003cli\u003e360-degree laser-welded electrode seal resists wear in severe conditions\u003c\/li\u003e\n\u003cli\u003eTapered-cut ground electrode and U-groove create a larger flame-center area\u003c\/li\u003e\n\u003cli\u003eDesigned for compatible applications requiring the DENSO IW24 spark plug, part number 5316\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567379906795,"sku":"IW24","price":15.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34613.png?v=1790796211"},{"product_id":"denso-iw31-iridium-spark-plug-part-number-5319","title":"DENSO IW31 Iridium Spark Plug, Part Number 5319","description":"Iridium Spark Plug - IW31\n\u003cp\u003eThe DENSO IW31 Iridium Spark Plug is designed for dependable ignition performance in demanding automotive and powersports applications. Manufactured by DENSO and identified by manufacturer and vendor part number 5319, this spark plug uses a high-strength iridium center electrode engineered to withstand temperatures up to 4,000°F. The IW31 model is suitable for applications requiring a durable, high-performance iridium plug with reduced voltage demand and consistent spark delivery.\u003c\/p\u003e\u003cp\u003eIts fine 0.4 mm iridium electrode helps lower the voltage required for ignition while supporting efficient firing performance. A 360-degree laser-welded electrode construction creates a secure seal that resists wear under severe operating conditions. The ground electrode incorporates a tapered cut and U-groove design, creating a larger flame center area to promote reliable combustion and stable engine operation.\u003c\/p\u003e\u003cp\u003eUse the DENSO IW31 Iridium Spark Plug as a direct replacement when vehicle or equipment fitment specifications call for model IW31 and part number 5319. Confirm thread, heat range, reach, and application requirements before installation to ensure proper compatibility. This DENSO spark plug is built for long-lasting service and consistent ignition performance in engines exposed to high temperatures and demanding conditions.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: IW31\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 5319\u003c\/li\u003e\n\u003cli\u003eVendor part number: 5319\u003c\/li\u003e\n\u003cli\u003eType: Iridium spark plug\u003c\/li\u003e\n\u003cli\u003eTemperature resistance: Withstands temperatures up to 4,000°F\u003c\/li\u003e\n\u003cli\u003eElectrode design: Fine 0.4 mm iridium center electrode helps reduce voltage requirements\u003c\/li\u003e\n\u003cli\u003eWelding construction: 360-degree laser-welded electrode seal resists wear\u003c\/li\u003e\n\u003cli\u003eGround electrode: Tapered cut and U-groove design supports a larger flame center area\u003c\/li\u003e\n\u003cli\u003eFitment: Intended for applications specifying DENSO IW31 spark plug model and part number 5319\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567380103403,"sku":"IW31","price":23.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34676.png?v=1790796217"},{"product_id":"denso-iridium-spark-plug-ix27b-part-number-5377","title":"DENSO Iridium Spark Plug IX27B, Part Number 5377","description":"Iridium Spark Plug - IX27B\n\u003cp\u003eThe DENSO Iridium Spark Plug IX27B is engineered to deliver reliable ignition, strong firing performance, and long service life in demanding engine applications. Manufactured by DENSO and identified by manufacturer and vendor part number 5377, this spark plug uses a fine iridium center electrode to help reduce the voltage required for ignition while promoting consistent combustion. Its iridium construction withstands temperatures up to 4,000°F, supporting dependable performance under high-heat operating conditions.\u003c\/p\u003e\u003cp\u003eFeature: The 0.016-inch iridium electrode enables efficient voltage transfer and improved firing performance. Feature: A 360-degree laser-welded electrode connection creates a durable seal designed to resist wear in severe operating environments. Feature: The tapered-cut ground electrode and U-groove configuration create a larger flame-center area to support reliable ignition and efficient combustion. Feature: DENSO quality manufacturing provides a dependable replacement option for vehicles and equipment specified for the IX27B spark plug.\u003c\/p\u003e\u003cp\u003eDesigned for fitment in applications requiring a DENSO IX27B iridium spark plug, this replacement should be matched against the vehicle or engine manufacturer’s specifications before installation. Confirm the required heat range, thread configuration, reach, and ignition system compatibility to ensure proper fitment. The DENSO IX27B, manufacturer part number 5377, is suitable for maintenance, repair, and replacement applications where consistent spark performance and high-temperature durability are required.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh-temperature durability: Iridium construction withstands temperatures up to 4,000°F.\u003c\/li\u003e\n\u003cli\u003eFine electrode design: The 0.016-inch iridium center electrode helps reduce voltage requirements and improve firing performance.\u003c\/li\u003e\n\u003cli\u003eLaser-welded construction: A 360-degree laser weld helps create a wear-resistant electrode seal.\u003c\/li\u003e\n\u003cli\u003eEnhanced flame area: The tapered-cut ground electrode and U-groove support reliable flame development.\u003c\/li\u003e\n\u003cli\u003eApplication fitment: Designed for engines and vehicles specified for the DENSO IX27B spark plug, manufacturer and vendor part number 5377.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567380496619,"sku":"IX27B","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34962.png?v=1790796224"},{"product_id":"denso-w27esr-u-spark-plug-part-number-4045","title":"DENSO W27ESR-U Spark Plug, Part Number 4045","description":"Spark Plug - W27ESR-U\n\u003cp\u003eThe DENSO W27ESR-U Spark Plug, manufacturer part number 4045, is designed to provide dependable ignition performance in compatible automotive applications. As an original equipment spark plug from DENSO, it supports consistent engine starting, efficient combustion, and reliable operation under normal driving conditions. The W27ESR-U model is built for applications requiring this specific plug design and heat range, making proper vehicle and engine fitment verification essential before installation.\u003c\/p\u003e\u003cp\u003eBuilt with a copper core center electrode, this DENSO spark plug promotes superior thermal conductivity to help manage operating heat effectively. The plug is 100 percent pre-fired to help ensure reliable operation from installation. Its unique five-rib insulator helps reduce flashover and minimize voltage loss, supporting dependable spark delivery. A dual copper and glass seal bonds the center electrode and insulator together, creating a gas-tight seal for enhanced durability and consistent performance.\u003c\/p\u003e\u003cp\u003eFor correct fitment, compare the DENSO W27ESR-U model and manufacturer part number 4045 with the vehicle manufacturer’s specifications, engine requirements, and existing spark plug information. Installation should follow the recommended service procedures and spark plug gap specifications for the application. This DENSO original equipment spark plug is a practical replacement choice for maintaining the intended ignition performance of compatible automotive systems.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: W27ESR-U\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 4045\u003c\/li\u003e\n\u003cli\u003eApplication: Original equipment automotive spark plug\u003c\/li\u003e\n\u003cli\u003eIgnition performance: 100 percent pre-fired for reliable operation\u003c\/li\u003e\n\u003cli\u003eCenter electrode: Copper core for superior thermal conductivity\u003c\/li\u003e\n\u003cli\u003eInsulator design: Five ribs help reduce flashover and voltage loss\u003c\/li\u003e\n\u003cli\u003eSealing construction: Dual copper and glass seal provides a gas-tight bond\u003c\/li\u003e\n\u003cli\u003eFitment: Designed for compatible automotive applications; verify vehicle and engine specifications before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567380725995,"sku":"W27ESRU","price":5.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/35310.png?v=1790796230"},{"product_id":"denso-w27es-u-spark-plug-part-number-4046","title":"DENSO W27ES-U Spark Plug, Part Number 4046","description":"Spark Plug - W27ES-U\n\u003cp\u003eThe DENSO W27ES-U spark plug is an original-equipment replacement designed for dependable ignition performance in compatible automotive applications. This standard-size spark plug features a copper core center electrode that promotes efficient thermal conductivity, helping transfer heat away from the firing end for reliable operation across a broad range of driving conditions.\u003c\/p\u003e\u003cp\u003eManufactured by DENSO, the W27ES-U uses a pre-fired construction to help ensure consistent operation from installation. Its unique five-rib insulator helps reduce flashover and voltage loss, supporting stable spark delivery. A dual copper and glass seal bonds the center electrode and insulator together to create a gas-tight seal, helping protect internal components and maintain dependable performance.\u003c\/p\u003e\u003cp\u003eUse the DENSO W27ES-U, manufacturer part number 4046, for vehicles and equipment specified for this spark plug. Fitment varies by application, so confirm the vehicle manufacturer’s requirements, engine specifications, heat range, and thread style before installation. This product is supplied as an individual spark plug and is intended to replace the corresponding original-equipment plug where applicable.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: W27ES-U\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 4046\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 4046\u003c\/li\u003e\n\u003cli\u003eApplication: Original-equipment spark plug for compatible automotive applications\u003c\/li\u003e\n\u003cli\u003eConstruction: 100 percent pre-fired for reliable operation\u003c\/li\u003e\n\u003cli\u003eElectrode: Copper core center electrode for superior thermal conductivity\u003c\/li\u003e\n\u003cli\u003eInsulator: Five-rib design helps reduce flashover and voltage loss\u003c\/li\u003e\n\u003cli\u003eSealing: Dual copper and glass seal provides a gas-tight bond between the center electrode and insulator\u003c\/li\u003e\n\u003cli\u003eFitment: Verify vehicle and engine compatibility before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567381151979,"sku":"W27ESU","price":3.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/35332.png?v=1790796235"},{"product_id":"denso-w24esr-u-4033-spark-plug","title":"DENSO W24ESR-U 4033 Spark Plug","description":"Spark Plug - W24ESR-U\n\u003cp\u003eThe DENSO W24ESR-U spark plug, manufacturer part number 4033, is designed for dependable ignition performance in compatible automotive applications. As an original equipment spark plug from DENSO, it supports consistent engine operation and reliable starting when matched to the vehicle’s specified fitment. The W24ESR-U model is engineered for applications requiring its specific plug design and heat range.\u003c\/p\u003e\u003cp\u003eBuilt with a copper core center electrode, this spark plug promotes superior thermal conductivity to help manage operating temperatures and support efficient spark performance. The insulator uses a unique five-rib design that helps reduce flashover and minimize voltage loss, contributing to dependable ignition under demanding conditions. A dual copper and glass seal bonds the center electrode and insulator together, creating a gas-tight seal for added durability and dependable operation.\u003c\/p\u003e\u003cp\u003eFor proper installation, verify that the DENSO W24ESR-U model and manufacturer part number 4033 match the vehicle, engine, and application requirements. This spark plug is intended as an original equipment replacement for compatible automotive systems and should be installed according to the vehicle manufacturer’s service procedures.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eModel: W24ESR-U\u003c\/li\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 4033\u003c\/li\u003e\n\u003cli\u003eVendor part number: 4033\u003c\/li\u003e\n\u003cli\u003eApplication: Original equipment replacement for compatible automotive applications\u003c\/li\u003e\n\u003cli\u003eElectrode: Copper core center electrode for superior thermal conductivity\u003c\/li\u003e\n\u003cli\u003eInsulator: Five-rib design helps reduce flashover and voltage loss\u003c\/li\u003e\n\u003cli\u003eSeal: Dual copper and glass seal provides a gas-tight bond between the center electrode and insulator\u003c\/li\u003e\n\u003cli\u003eConstruction: 100 percent pre-fired for reliable operation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567381479659,"sku":"W24ESRU","price":5.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/35209.png?v=1790796241"},{"product_id":"denso-x22epr-u9-spark-plug-part-number-4086","title":"DENSO X22EPR-U9 Spark Plug, Part Number 4086","description":"Spark Plug - X22EPR-U9\n\u003cp\u003eThe DENSO X22EPR-U9 spark plug is an original-equipment-style replacement designed to support dependable ignition performance in compatible automotive applications. Manufactured by DENSO, this spark plug uses a copper core center electrode to promote efficient thermal conductivity and help manage operating temperatures during normal engine operation.\u003c\/p\u003e\u003cp\u003eEach plug is 100 percent pre-fired to help provide reliable operation from installation. The unique five-rib insulator design helps reduce flashover and voltage loss, supporting consistent spark delivery. A dual copper and glass seal bonds the center electrode and insulator together to create a gas-tight seal, helping protect internal components and maintain dependable performance.\u003c\/p\u003e\u003cp\u003eUse the DENSO X22EPR-U9, manufacturer part number 4086, as a replacement only where this model is specified for the vehicle’s engine. Confirm application, thread specification, heat range, and ignition requirements before installation. This spark plug is intended for automotive fitment and should be installed according to the vehicle manufacturer’s service procedures.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOriginal-equipment-style replacement for compatible automotive applications\u003c\/li\u003e\n\u003cli\u003eCopper core center electrode promotes superior thermal conductivity\u003c\/li\u003e\n\u003cli\u003eFive-rib insulator helps reduce flashover and voltage loss\u003c\/li\u003e\n\u003cli\u003eDual copper and glass seal creates a gas-tight bond between the center electrode and insulator\u003c\/li\u003e\n\u003cli\u003e100 percent pre-fired for reliable operation from installation\u003c\/li\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: X22EPR-U9\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 4086\u003c\/li\u003e\n\u003cli\u003eVendor part number: 4086\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567381938411,"sku":"X22EPRU9","price":5.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/35352.png?v=1790796247"},{"product_id":"denso-x24esr-u-spark-plug-part-number-4101","title":"DENSO X24ESR-U Spark Plug, Part Number 4101","description":"Spark Plug - X24ESR-U\n\u003cp\u003eThe DENSO X24ESR-U spark plug is an original-equipment-quality ignition component designed to support dependable engine starting, smooth operation, and consistent combustion in compatible automotive applications. Manufactured by DENSO, this spark plug uses a copper core center electrode to promote efficient thermal conductivity and help manage operating temperatures under demanding conditions.\u003c\/p\u003e\u003cp\u003eIts 100 percent pre-fired construction helps ensure reliable operation from installation, while the unique five-rib insulator helps reduce flashover and minimize voltage loss. A dual copper and glass seal bonds the center electrode and insulator together to create a gas-tight seal, supporting long-term durability and dependable ignition performance. The DENSO X24ESR-U, manufacturer part number 4101, is designed for vehicles and engines specified for this spark plug model.\u003c\/p\u003e\u003cp\u003eFor proper fitment, verify the vehicle year, make, model, engine, and original spark plug specifications before installation. The DENSO X24ESR-U spark plug should be installed according to the vehicle manufacturer's recommended service procedures, including the correct gap, torque, and ignition-system requirements. Its original equipment application makes it a practical replacement for compatible automotive engines requiring DENSO part number 4101.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: X24ESR-U\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 4101\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 4101\u003c\/li\u003e\n\u003cli\u003eConstruction: 100 percent pre-fired for reliable operation\u003c\/li\u003e\n\u003cli\u003eElectrode: Copper core center electrode for superior thermal conductivity\u003c\/li\u003e\n\u003cli\u003eInsulator: Five-rib design helps reduce flashover and decrease voltage loss\u003c\/li\u003e\n\u003cli\u003eSeal: Dual copper and glass seal provides a gas-tight bond between the center electrode and insulator\u003c\/li\u003e\n\u003cli\u003eApplication: Original equipment replacement for compatible automotive applications\u003c\/li\u003e\n\u003cli\u003eFitment: Verify vehicle year, make, model, engine, and spark plug specifications before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567382429931,"sku":"X24ESRU","price":5.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/35400.png?v=1790796254"},{"product_id":"denso-x24es-u-spark-plug-part-number-4099","title":"DENSO X24ES-U Spark Plug, Part Number 4099","description":"Spark Plug - X24ES-U\n\u003cp\u003eThe DENSO X24ES-U Spark Plug is an original-equipment-quality ignition component designed for dependable performance in compatible automotive applications. Manufactured by DENSO, this spark plug uses a copper core center electrode to promote efficient thermal conductivity and help manage operating temperatures during engine operation. Its reliable construction supports consistent ignition and smooth engine performance when replacing a worn or fouled spark plug.\u003c\/p\u003e\u003cp\u003eThe X24ES-U model is 100 percent pre-fired to help ensure reliable operation from installation. A unique five-rib insulator helps reduce flashover and voltage loss, while the dual copper and glass seal bonds the center electrode and insulator together to create a gas-tight seal. These features help support dependable electrical insulation, durability, and consistent spark delivery in the intended vehicle fitments.\u003c\/p\u003e\u003cp\u003eUse the DENSO X24ES-U, manufacturer part number 4099 and vendor part number 4099, only for applications specified by the vehicle or engine manufacturer. Confirm the correct model and fitment before installation, and replace spark plugs according to the recommended service interval. This DENSO replacement spark plug is suited to automotive maintenance, repair, and original-equipment replacement needs where the X24ES-U specification is required.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: X24ES-U\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 4099\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 4099\u003c\/li\u003e\n\u003cli\u003eApplication: Original-equipment-quality spark plug for compatible automotive applications\u003c\/li\u003e\n\u003cli\u003ePre-Fired Design: 100 percent pre-fired to support reliable operation\u003c\/li\u003e\n\u003cli\u003eCenter Electrode: Copper core construction provides superior thermal conductivity\u003c\/li\u003e\n\u003cli\u003eInsulator: Five-rib design helps reduce flashover and decrease voltage loss\u003c\/li\u003e\n\u003cli\u003eSealing: Dual copper and glass seal creates a gas-tight bond between the center electrode and insulator\u003c\/li\u003e\n\u003cli\u003eFitment: Designed for vehicles and engines requiring the DENSO X24ES-U specification\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567382954219,"sku":"X24ESU","price":4.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/35429.png?v=1790796260"},{"product_id":"denso-x27es-u-spark-plug-part-number-4114","title":"DENSO X27ES-U Spark Plug, Part Number 4114","description":"Spark Plug - X27ES-U\n\u003cp\u003eThe DENSO X27ES-U spark plug is an original-equipment-quality ignition component designed for reliable performance in compatible automotive applications. Manufactured by DENSO and identified by manufacturer and vendor part number 4114, this spark plug features a copper core center electrode that promotes efficient thermal conductivity and helps support consistent heat control during engine operation.\u003c\/p\u003e\u003cp\u003eThe X27ES-U model is 100 percent pre-fired to help ensure dependable operation from installation. Its unique five-rib insulator design helps reduce flashover and voltage loss, supporting stable ignition performance under demanding conditions. A dual copper and glass seal bonds the center electrode and insulator together to create a gas-tight seal, helping protect internal components and maintain reliable service.\u003c\/p\u003e\u003cp\u003eDesigned as a replacement spark plug for compatible automotive applications, the DENSO X27ES-U should be matched to the vehicle manufacturer’s recommended spark plug specifications before installation. Confirm vehicle, engine, and application fitment to ensure proper compatibility. The brand is DENSO, the model is X27ES-U, and the manufacturer and vendor part number is 4114.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: X27ES-U\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 4114\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 4114\u003c\/li\u003e\n\u003cli\u003eApplication: Original-equipment-quality spark plug for compatible automotive applications\u003c\/li\u003e\n\u003cli\u003ePre-Fired Design: 100 percent pre-fired to help ensure reliable operation\u003c\/li\u003e\n\u003cli\u003eCenter Electrode: Copper core construction for superior thermal conductivity\u003c\/li\u003e\n\u003cli\u003eInsulator: Unique five-rib design helps reduce flashover and voltage loss\u003c\/li\u003e\n\u003cli\u003eSealing System: Dual copper and glass seal creates a gas-tight bond between the center electrode and insulator\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567384756459,"sku":"X27ESU","price":4.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/35453.png?v=1790796266"},{"product_id":"denso-iridium-spark-plug-iwf22-part-number-5379","title":"DENSO Iridium Spark Plug IWF22, Part Number 5379","description":"Iridium Spark Plug - IWF22\n\u003cp\u003eThe DENSO IWF22 Iridium Spark Plug, manufacturer part number 5379 and vendor part number 5379, is engineered for dependable ignition performance in demanding automotive and powersports applications. Its iridium electrode material is exceptionally durable and withstands temperatures up to 4,000°F, helping the spark plug maintain reliable operation under high-heat conditions.\u003c\/p\u003e\u003cp\u003eFeature: The fine 0.4 mm iridium center electrode reduces voltage requirements while promoting efficient, consistent firing. A 360-degree laser-welded electrode construction creates a durable seal designed to resist wear, even in severe operating environments. The ground electrode uses a tapered cut and U-groove design to create a larger flame-center area, supporting improved flame propagation and combustion performance.\u003c\/p\u003e\u003cp\u003eThe DENSO IWF22 is intended as a direct-fit replacement when the vehicle or equipment manufacturer specifies this plug model and heat range. Confirm fitment using the application catalog, owner’s manual, or existing spark plug specifications before installation. Proper fitment depends on the engine design, ignition system, and required plug characteristics. Install the DENSO IWF22 according to the manufacturer’s torque and service recommendations.\u003c\/p\u003e\u003cp\u003eWith its high-temperature iridium construction, reduced-voltage ignition design, and wear-resistant laser-welded electrode, the DENSO IWF22 provides a durable replacement solution for applications requiring part number 5379. It is suitable for maintaining consistent ignition performance and long service life when matched to the correct engine application.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIridium Electrode: Withstands temperatures up to 4,000°F for durable high-heat performance.\u003c\/li\u003e\n\u003cli\u003eFine-Wire Center Electrode: The 0.4 mm iridium electrode helps reduce voltage requirements and improve firing performance.\u003c\/li\u003e\n\u003cli\u003eLaser-Welded Construction: A 360-degree laser weld helps seal the electrode and resist wear in severe conditions.\u003c\/li\u003e\n\u003cli\u003eTapered Ground Electrode: Tapered-cut and U-groove design creates a larger flame-center area.\u003c\/li\u003e\n\u003cli\u003eFitment: Direct-fit replacement for applications that specify the DENSO IWF22 spark plug and part number 5379; verify application requirements before installation.\u003c\/li\u003e\n\u003cli\u003eBrand and Part Number: DENSO IWF22, manufacturer and vendor part number 5379.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567386951915,"sku":"IWF22","price":13.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34709.png?v=1790796275"},{"product_id":"denso-iwf24-iridium-spark-plug-part-number-5380","title":"DENSO IWF24 Iridium Spark Plug, Part Number 5380","description":"Iridium Spark Plug - IWF24\n\u003cp\u003eThe DENSO IWF24 Iridium Spark Plug, manufacturer part number 5380 and vendor part number 5380, is engineered for reliable ignition and consistent performance in demanding engine applications. Its iridium construction provides exceptional durability and heat resistance, withstanding temperatures up to 4,000°F. The fine iridium center electrode helps reduce the voltage required for ignition while supporting improved firing performance and dependable starts.\u003c\/p\u003e\u003cp\u003eDENSO uses 360° laser welding on the electrode to create a secure seal that resists wear, even under severe operating conditions. The ground electrode features a tapered cut and U-groove design that creates a larger flame-center area, promoting efficient combustion and stable engine operation. These design features make the IWF24 suitable for replacement applications requiring a high-performance iridium spark plug.\u003c\/p\u003e\u003cp\u003eVerify vehicle, engine, and application fitment before installation. The DENSO IWF24 spark plug is identified by model IWF24, brand DENSO, manufacturer part number 5380, and vendor part number 5380. Install according to the vehicle manufacturer’s specifications and use the recommended torque and gap settings for the applicable engine.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIridium Electrode: Provides exceptional durability and withstands temperatures up to 4,000°F.\u003c\/li\u003e\n\u003cli\u003eFine Center Electrode: Helps lower ignition voltage requirements while supporting reliable firing performance.\u003c\/li\u003e\n\u003cli\u003e360° Laser Welding: Creates a secure electrode seal designed to resist wear in severe operating conditions.\u003c\/li\u003e\n\u003cli\u003eTapered Ground Electrode: Supports efficient flame development and consistent combustion.\u003c\/li\u003e\n\u003cli\u003eU-Groove Design: Forms a larger flame-center area for dependable ignition and engine operation.\u003c\/li\u003e\n\u003cli\u003eFitment: Designed for compatible engine applications requiring a DENSO IWF24 iridium spark plug; verify application details before installation.\u003c\/li\u003e\n\u003cli\u003eIdentification: DENSO model IWF24 with manufacturer and vendor part number 5380.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567389343979,"sku":"IWF24","price":16.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34763.png?v=1790796280"},{"product_id":"denso-ik20-iridium-spark-plug-part-number-5304","title":"DENSO IK20 Iridium Spark Plug, Part Number 5304","description":"Iridium Spark Plug - IK20\n\u003cp\u003eThe DENSO IK20 Iridium Spark Plug is engineered for reliable ignition, efficient combustion, and long-lasting performance in demanding automotive applications. Manufactured by DENSO, this iridium spark plug uses a fine-wire center electrode to help reduce the voltage required for ignition while promoting consistent firing performance. The IK20 model and manufacturer part number 5304 make it easier to identify the correct replacement for compatible vehicles and engines.\u003c\/p\u003e\u003cp\u003eIridium is significantly harder and more heat-resistant than platinum, allowing the electrode to withstand temperatures up to 4,000°F. The fine 0.4 mm electrode design supports a concentrated spark and improved ignition response. DENSO’s 360-degree laser-welded electrode construction creates a durable seal designed to resist wear under severe operating conditions, helping maintain dependable performance over an extended service interval.\u003c\/p\u003e\u003cp\u003eThe ground electrode features a tapered cut and U-groove design that creates a larger volume area around the center of the flame. This configuration promotes efficient flame development and supports stable combustion across a wide range of engine operating conditions. Use the DENSO IK20 Iridium Spark Plug as a direct replacement only when the application’s required heat range, thread specifications, reach, and gap match the vehicle or engine manufacturer’s recommendations. Verify fitment before installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIridium Construction: Uses a durable iridium electrode material designed to withstand temperatures up to 4,000°F.\u003c\/li\u003e\n\u003cli\u003eFine-Wire Electrode: The 0.4 mm center electrode helps reduce voltage requirements and supports reliable firing.\u003c\/li\u003e\n\u003cli\u003eLaser-Welded Seal: 360-degree laser welding helps resist electrode wear in demanding operating conditions.\u003c\/li\u003e\n\u003cli\u003eTapered Ground Electrode: Tapered-cut and U-groove design creates a larger flame-center area for efficient combustion.\u003c\/li\u003e\n\u003cli\u003eApplication Fitment: Designed for compatible automotive and engine applications requiring the DENSO IK20 specification; verify vehicle fitment before installation.\u003c\/li\u003e\n\u003cli\u003eBrand and Part Number: DENSO IK20 model, manufacturer part number 5304, vendor part number 5304.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567390589163,"sku":"IK20","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34294.png?v=1790796288"},{"product_id":"denso-iw20-iridium-spark-plug-part-number-5306","title":"DENSO IW20 Iridium Spark Plug, Part Number 5306","description":"Iridium Spark Plug - IW20\n\u003cp\u003eThe DENSO IW20 Iridium Spark Plug, manufacturer part number 5306 and vendor part number 5306, is engineered to provide dependable ignition performance for compatible automotive and powersports applications. Its iridium electrodes withstand temperatures up to 4,000°F, helping the plug maintain durability and consistent operation under demanding engine conditions. The fine iridium electrode design also helps reduce voltage requirements while supporting reliable spark formation.\u003c\/p\u003e\u003cp\u003eDENSO uses 360-degree laser welding to secure the electrode and create a wear-resistant seal designed for demanding environments. The tapered-cut ground electrode and U-groove configuration create a larger volume area around the flame center, supporting efficient combustion and stable ignition. This design can contribute to smooth engine operation and dependable starting when the plug is correctly matched to the application.\u003c\/p\u003e\u003cp\u003eFitment varies by vehicle, engine, and application. Verify the DENSO IW20 model and part number 5306 against the original equipment specification or an authoritative application guide before installation. This spark plug is intended as a direct replacement for compatible applications and should be installed using the vehicle manufacturer’s recommended procedures and gap specifications. The product is sold as an individual spark plug.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: IW20\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 5306\u003c\/li\u003e\n\u003cli\u003eVendor part number: 5306\u003c\/li\u003e\n\u003cli\u003eElectrode material: Iridium\u003c\/li\u003e\n\u003cli\u003eTemperature resistance: Supports operating temperatures up to 4,000°F\u003c\/li\u003e\n\u003cli\u003eElectrode design: Fine iridium electrode helps reduce voltage requirements and improve firing performance\u003c\/li\u003e\n\u003cli\u003eWelding construction: 360-degree laser-welded electrode seal resists wear in demanding conditions\u003c\/li\u003e\n\u003cli\u003eGround electrode: Tapered-cut design with a U-groove creates a larger flame-center volume area\u003c\/li\u003e\n\u003cli\u003eFitment: Compatible with select automotive and powersports applications; verify application-specific fitment before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567391604971,"sku":"IW20","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34543.png?v=1790796294"},{"product_id":"denso-iridium-spark-plug-ix24b-part-number-5376","title":"DENSO Iridium Spark Plug IX24B, Part Number 5376","description":"Iridium Spark Plug - IX24B\n\u003cp\u003eThe DENSO IX24B Iridium Spark Plug is engineered for dependable ignition, improved firing performance, and long service life in demanding engine applications. Manufactured by DENSO, this spark plug uses a fine iridium center electrode that requires less voltage to produce a strong, consistent spark. Its design supports efficient combustion and reliable starting across a broad range of operating conditions.\u003c\/p\u003e\u003cp\u003eIridium is significantly harder and more heat-resistant than conventional spark plug materials, withstanding temperatures up to 4,000°F. The 360-degree laser-welded electrode construction creates a secure seal designed to resist wear, while the tapered-cut ground electrode and U-groove promote a larger flame-kernel area for more complete ignition. These features help maintain stable performance in high-temperature and high-stress environments.\u003c\/p\u003e\u003cp\u003eDesigned for applications requiring the DENSO IX24B specification, this plug should be matched to the vehicle or equipment manufacturer’s recommended heat range, thread, reach, and ignition requirements before installation. It is suitable as a replacement spark plug where DENSO part number 5376 is specified. Verify fitment using the application catalog or the original spark plug specifications to ensure proper compatibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e DENSO\u003cbr\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e IX24B\u003cbr\u003e\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 5376\u003cbr\u003e\u003cstrong\u003eVendor Part Number:\u003c\/strong\u003e 5376\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIridium Electrode: Fine 0.4 mm center electrode helps reduce voltage requirements and improve firing performance.\u003c\/li\u003e\n\u003cli\u003eHigh-Temperature Resistance: Iridium construction withstands temperatures up to 4,000°F for demanding engine conditions.\u003c\/li\u003e\n\u003cli\u003eLaser-Welded Construction: 360-degree laser welding provides a sealed electrode assembly designed to resist wear.\u003c\/li\u003e\n\u003cli\u003eEnhanced Flame Development: Tapered-cut ground electrode and U-groove create a larger flame-kernel area for reliable ignition.\u003c\/li\u003e\n\u003cli\u003eApplication Fitment: Designed for vehicles and equipment specifying the DENSO IX24B spark plug, manufacturer part number 5376.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567394357483,"sku":"IX24B","price":16.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34905.png?v=1790796301"},{"product_id":"denso-iridium-ix27-spark-plug-part-number-5373","title":"DENSO Iridium IX27 Spark Plug, Part Number 5373","description":"Iridium Spark Plug - IX27\n\u003cp\u003eThe DENSO IX27 Iridium Spark Plug, manufacturer part number 5373 and vendor part number 5373, is engineered to deliver dependable ignition performance in demanding engine applications. Its fine iridium center electrode supports lower voltage requirements while promoting consistent spark formation, helping improve starting, throttle response, and overall combustion efficiency. The IX27 model is designed for engines that require a durable, high-performance spark plug with reliable heat resistance.\u003c\/p\u003e\u003cp\u003eIridium is exceptionally resistant to erosion and can withstand temperatures up to 4,000°F, helping the electrode maintain its shape over extended service intervals. DENSO’s 0.016-inch iridium electrode is produced with 360-degree laser welding to create a secure seal that resists wear under severe operating conditions. This construction supports long-term performance in high-temperature and high-load environments.\u003c\/p\u003e\u003cp\u003eThe ground electrode features a tapered cut and U-groove design that creates a larger volume area around the flame center. This configuration helps promote efficient flame development and stable ignition across a broad range of operating conditions. The DENSO IX27 fits applications specified for this model and part number; always verify vehicle, engine, thread, reach, heat range, and manufacturer application requirements before installation. This spark plug is supplied as an individual replacement component.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: IX27\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 5373\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 5373\u003c\/li\u003e\n\u003cli\u003eElectrode Material: Iridium for high-temperature durability and reduced wear\u003c\/li\u003e\n\u003cli\u003eOperating Temperature Resistance: Withstands temperatures up to 4,000°F\u003c\/li\u003e\n\u003cli\u003eCenter Electrode: 0.016-inch fine-wire design helps reduce required firing voltage\u003c\/li\u003e\n\u003cli\u003eWelding Construction: 360-degree laser-welded electrode seal resists wear\u003c\/li\u003e\n\u003cli\u003eGround Electrode: Tapered cut and U-groove support stable flame development\u003c\/li\u003e\n\u003cli\u003eFitment: For vehicle and engine applications specified for DENSO IX27 part number 5373; verify application before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567396880619,"sku":"IX27","price":16.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34933.png?v=1790796307"},{"product_id":"denso-x24epr-u9-spark-plug-part-number-4096","title":"DENSO X24EPR-U9 Spark Plug, Part Number 4096","description":"Spark Plug - X24EPR-U9\n\u003cp\u003eThe DENSO X24EPR-U9 Spark Plug, manufacturer part number 4096 and vendor part number 4096, is an original equipment-style replacement designed for dependable performance in compatible automotive applications. Its pre-fired construction helps ensure reliable operation immediately after installation, reducing the need for additional preparation before use.\u003c\/p\u003e\u003cp\u003eA copper-core center electrode provides efficient thermal conductivity to help manage operating temperatures and support consistent ignition performance. The unique five-rib insulator helps reduce flashover and voltage loss, while the dual copper and glass seal bonds the center electrode and insulator together to create a gas-tight seal. These construction features help promote durability and dependable service under demanding engine conditions.\u003c\/p\u003e\u003cp\u003eUse this DENSO X24EPR-U9 spark plug only for vehicles and engines specified for this application. Confirm the required spark plug model and part number before installation, and follow the vehicle manufacturer’s recommended service procedures and gap specifications. This replacement spark plug is supplied under the DENSO brand and is identified by manufacturer and vendor part number 4096.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eApplication: Original equipment-style spark plug for compatible automotive applications\u003c\/li\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: X24EPR-U9\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 4096\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 4096\u003c\/li\u003e\n\u003cli\u003ePre-Fired Design: Helps ensure reliable operation after installation\u003c\/li\u003e\n\u003cli\u003eCopper-Core Center Electrode: Provides superior thermal conductivity\u003c\/li\u003e\n\u003cli\u003eFive-Rib Insulator: Helps reduce flashover and decrease voltage loss\u003c\/li\u003e\n\u003cli\u003eDual Copper and Glass Seal: Bonds the center electrode and insulator for a gas-tight seal\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567397634283,"sku":"X24EPRU9","price":5.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/35385.png?v=1790796315"},{"product_id":"denso-iridium-iw27-spark-plug-part-number-5317","title":"DENSO Iridium IW27 Spark Plug, Part Number 5317","description":"Iridium Spark Plug - IW27\n\u003cp\u003eThe DENSO Iridium IW27 Spark Plug, manufacturer part number 5317 and vendor part number 5317, is engineered for high-performance ignition applications that demand dependable spark delivery and long-lasting electrode durability. Its iridium construction withstands temperatures up to 4,000°F, helping the plug maintain performance under severe operating conditions. The fine iridium center electrode supports lower voltage requirements while promoting reliable ignition and efficient firing performance.\u003c\/p\u003e\u003cp\u003eDesigned for applications specified for the DENSO IW27 model, this spark plug uses 360° laser welding around the electrode to create a durable seal that resists wear in demanding environments. The tapered-cut ground electrode and U-groove create a larger flame-center area, supporting consistent flame development and dependable combustion. These design features make the plug suitable for performance-focused engines and replacement applications requiring the DENSO IW27 specification.\u003c\/p\u003e\u003cp\u003eVerify vehicle or equipment fitment before installation, including engine application, heat range, thread specification, and ignition system requirements. The DENSO Iridium IW27 Spark Plug is supplied under brand DENSO and is identified by manufacturer and vendor part number 5317.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: IW27\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 5317\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 5317\u003c\/li\u003e\n\u003cli\u003eSpark Plug Type: Iridium\u003c\/li\u003e\n\u003cli\u003eTemperature Resistance: Withstands temperatures up to 4,000°F\u003c\/li\u003e\n\u003cli\u003eCenter Electrode: Fine iridium electrode helps reduce voltage requirements and improve firing performance\u003c\/li\u003e\n\u003cli\u003eElectrode Welding: 360° laser-welded electrode provides a durable, wear-resistant seal\u003c\/li\u003e\n\u003cli\u003eGround Electrode: Tapered-cut design with U-groove supports a larger flame-center area\u003c\/li\u003e\n\u003cli\u003eFitment: For applications requiring the DENSO IW27 spark plug specification; verify vehicle or equipment compatibility before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567398027499,"sku":"IW27","price":16.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34638.png?v=1790796323"},{"product_id":"denso-iw22-iridium-spark-plug-part-number-5307","title":"DENSO IW22 Iridium Spark Plug, Part Number 5307","description":"Iridium Spark Plug - IW22\n\u003cp\u003eThe DENSO IW22 Iridium Spark Plug, manufacturer part number 5307 and vendor part number 5307, is engineered for dependable ignition performance and long service life in compatible gasoline engines. Its iridium center electrode is designed to withstand temperatures up to 4,000°F, providing excellent durability under demanding operating conditions. The fine electrode design helps reduce the voltage required for ignition while supporting consistent spark performance.\u003c\/p\u003e\u003cp\u003eA 360-degree laser-welded electrode construction creates a secure seal that resists wear, even in severe engine environments. The ground electrode features a tapered cut and U-groove that help create a larger flame-center area for efficient combustion. These design features support reliable starts, stable engine operation, and consistent performance when the plug is properly matched to the vehicle’s application.\u003c\/p\u003e\u003cp\u003eUse this DENSO IW22 spark plug as a replacement for vehicles and engines specified for the IW22 model and 5307 part number. Always confirm application, thread specifications, heat range, and ignition-system compatibility with the manufacturer’s fitment information before installation. This product is supplied by DENSO and is identified by manufacturer and vendor part number 5307.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: IW22\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 5307\u003c\/li\u003e\n\u003cli\u003eVendor part number: 5307\u003c\/li\u003e\n\u003cli\u003eElectrode material: Iridium\u003c\/li\u003e\n\u003cli\u003eTemperature resistance: Handles temperatures up to 4,000°F\u003c\/li\u003e\n\u003cli\u003eElectrode design: Fine iridium electrode helps reduce voltage requirements and improve firing performance\u003c\/li\u003e\n\u003cli\u003eWelding construction: 360-degree laser-welded electrode seal resists wear\u003c\/li\u003e\n\u003cli\u003eGround electrode: Tapered cut and U-groove create a larger flame-center area\u003c\/li\u003e\n\u003cli\u003eFitment: Designed for compatible gasoline engines specified for DENSO IW22, part number 5307\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567402123499,"sku":"IW22","price":15.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34581.png?v=1790796340"}],"url":"https:\/\/ctracingservices.com\/collections\/denso.oembed","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}