Spark plug set 816761Q3 is for use on V8 MerCruiser (RH) engines (305 and 350 CID) with Thunderbolt IV ignition systems. Designed for efficiency and endurance, these wires are built to withstand the rigors of a marine engine environment. Quicksilver is the premier supplier of Mercury Marine original replacement parts.
- Complete set of spark plug wires with boots at spark plug end
- Tailored to reach the correct plug location for V8 MerCruiser (RH) engines
- Designed for efficiency, endurance and durability in a marine environment
- Fits Thunderbolt IV ignition systems (1981-1993)
