The 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.
DENSO 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.
Designed 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.
Features:
- Iridium Electrode: Six times harder than platinum for enhanced durability and long-lasting performance.
- Fine-Wire Center Electrode: The 0.4 mm electrode helps reduce voltage requirements and supports consistent firing.
- High-Temperature Resistance: Iridium material withstands temperatures up to 4,000°F for demanding applications.
- Laser-Welded Construction: 360-degree laser welding helps seal the electrode assembly against wear and harsh operating conditions.
- Tapered Ground Electrode: Tapered-cut and U-groove design provides a larger flame-center volume area for dependable ignition.
- Application Fitment: Intended for compatible vehicles and equipment specified for the DENSO IU24A spark plug, manufacturer part number 5365.