Iridium Power™ Spark Plug by Denso®. Performance Upgrade with World’s Smallest Center Electrode (0.4 mm Dia.) & Tapered Tip & Patented Iridium Alloy Plug (90% Ir). Patented U-Groove Design. Iridium Power™ best demonstrates its performance improvement during acceleration. The world’s smallest center electrode and specially shaped ground electrode delivers maximum spark energy while withstanding temperatures greater than 4000? F. These features combine to achieve higher ignitability and require lower spark voltage than ever before. As a result, acceleration improves in comparison with normal plugs.
- 0.4 mm iridium center electrode, the slimmest in the industry
- Patented self-cleaning insulator/electrode design
- Durable, reusable packaging protects spark plugs when not in use
- Handles extreme compression and boost levels
- Ultimate performance and durability
- Maximizes track time, minimizes downtime