[Precise Fit for Mercury Outboards] Designed for Mercury outboard motors: 175-300 hp, 450R 3.4L V6, and 4.6L V8 4-stroke models. Replaces part numbers LKAR7C-9, 93961, 8M0135348, and 33-8M0135348—verify your motor's specifications for a perfect fit
[Iridium & Ceramic Construction] Features an iridium center electrode for reliable ignition performance and a high-density, strong ceramic insulator with corrugated ribs to prevent flashover, ensuring consistent spark delivery
[Heat-Resistant Design] Crafted from high-temperature materials with excellent workmanship, the spark plug withstands extreme thermal stress and maintains durability, offering long service life in harsh outboard environments
[Enhanced Performance Features] Cold-rolled threads prevent cross-threading and cylinder head damage. Trivalent metal plating resists corrosion and seizing, while a triple-gasket seal stops leaks for reliable operation
[Easy Installation & Removal] Treated with corrosion-resistant plating, the iridium spark plug allows for straightforward installation and removal, simplifying maintenance for your Mercury outboard motor