NGK BU8H Spark Plug for Outboard Motors

Engine's been running hot and the fuel smell's getting stronger. A worn plug is the first thing to check before you start blaming the carb or the timing. The NGK BU8H is a direct-fit replacement built for outboard duty. Trivalent metal plating takes the saltwater hit and keeps the thread from welding itself into the head. Triple seals mean no oil weeping past the gasket on your next launch. Copper core pulls excess heat out of the chamber so you're not cooking the top end on long runs. Corrugated ribs kill flashover before it skips to the next cylinder. Alumina silicate ceramic insulator stays intact where cheaper plugs crack after a few seasons. Swap it, tighten it to spec, and get back to fishing. Add to cart

• Trivalent metal plating for anti-corrosion and anti-seizing in saltwater
• Corrugated ribs prevent flashover to adjacent components
• Pure alumina silicate ceramic insulator for structural strength and heat transfer
• Copper core aids in heat removal from the combustion chamber
• Triple seals prevent oil and gas leakage at the thread