Autolite Iridium XP Automotive Replacement Spark Plugs, XP5701 (4 Pack)
- One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures for long life.
- Double platinum point pad on center and ground electrode offer excellent durability and consistent voltage demands to help reduce wear on ignition system.
- Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance.
- Some ACDelco GM Original Equipment parts may have formerly appeared as ACDelco Professional.