Denso IW27 Iridium Power Spark Plugs (4-Pack) - High Performance Spark Plugs for Cars, Trucks & SUVs - Improves Fuel Efficiency & Engine Performance - Perfect for Daily Driving & Racing

Iridium Power best demonstrates its performance improvement during acceleration. The world's smallest center electrode and specially shaped ground electrode deliver maximum spark energy while withstanding temperatures greater than 4000º 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.

Tapered cut, U-Groove ground electrode

0. 4mm Iridium Tip

Patented 360-degree laser welding assembly process

Required ignition voltage reduced

Unsurpassed center electrode durability