The 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.
A 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.
Use 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.
Features:
- Brand: DENSO
- Model: IW22
- Manufacturer part number: 5307
- Vendor part number: 5307
- Electrode material: Iridium
- Temperature resistance: Handles temperatures up to 4,000°F
- Electrode design: Fine iridium electrode helps reduce voltage requirements and improve firing performance
- Welding construction: 360-degree laser-welded electrode seal resists wear
- Ground electrode: Tapered cut and U-groove create a larger flame-center area
- Fitment: Designed for compatible gasoline engines specified for DENSO IW22, part number 5307