Autolite XP3923-4PK Iridium XP Spark Plug
- Iridium-enhanced platinum alloy 0.6mm fine wire center electrode for improved ignitibility performance
- Patented V-trimmed platinum side wire technology resists wear
- OE equivalent design is engineered for every engine to ensure the right plug for your vehicle
- Designed for better overall durability with virtually no gap erosion for longer plug life
- Attached motor seat gasket and terminal nut