Keep your high-performance MerCruiser engine running smoothly with these premium AC Delco spark plugs. Featuring a nickel alloy tip and copper core, these plugs are designed for durability and consistent performance. Replacing used spark plugs with new ones ensures better starting, smoother idling, and improved fuel economy for your large-displacement engine.
- For MerCruiser 496 Mag & HO and MIE 8.1L & HO engines
- Nickel alloy tip and copper core for reliable performance
- Ribbed suppressor seal prevents misfire and flashover
- Produced by AC Delco for demanding marine applications
- Always replace all engine plugs at the same time for best results
