NGK ZFR5F @4 8M0204728

The NGK Standard plugs come pre-gapped as specified by your engine manufacturer. It is always recommended to check the gap before installation. Use only the spark plug listed in your engine owner’s manual. Using the wrong plug can reduce optimum performance, reduce fuel economy or cause damage to your engine. Spark plugs are easy to change with common spark plug sockets. The NGK pure alumina silicate ceramic insulator provides superior strength, reduces breakage and better heat transfer. The ribbed suppressor seal extends resistance and prevents spark “flash over” and misfire plus the triple seal helps prevent leakage. The Quicksilver brand is the leader in delivering uncompromising engine oils, parts and accessories to the marine industry for over 65 years. Quicksilver is the premier supplier of Mercury Marine original equipment replacement engine parts, oils, and accessories, but also works to serve all original equipment brands in the marine and powersports industries. It has earned a loyal following by providing the highest quality products that are tested through some of the most rigorous environments and testing procedures. No aftermarket company comes close to the level of research and design as Quicksilver; buying Quicksilver is buying performance, protection and peace of mind. - NGK Standard plugs are pre-gapped to your engine manufacturer’s specifications - Check your engine owner’s manual for the correct spark plug and use only the plug as recommended by your engine’s original equipment manufacturer - NGK Trivalent metal plating also provides superior anti-corrosion in the marine environment and anti-seizing for easier removal - These NGK standard plugs feature a copper core to promote heat dissipation and more efficient spark plug operation and a solid terminal to assure positive contact with spark plug wires - Replace all the engine plugs at the same time