Spark plug set 816608Q80 is for use on MerCruiser 5.7L Inboard and Tow Sports engines with Thunderbolt IV ignition systems (1998-2010). This complete set of 8 red wires with boots at the spark plug end is tailored for maximum performance and durability in marine applications.
- Complete set of 8 red wires with boots at spark plug end
- Tailored to reach the correct plug location
- Designed for efficiency, endurance and durability in a marine engine environment
- Fits 5.7L Inboard and Tow Sports engines with Thunderbolt IV ignition
