Mercury NGK ZFR5F Spark Plug 8M0204728

Mercury NGK ZFR5F Spark Plug 8M0204728 is a genuine Mercury/Quicksilver OEM replacement spark plug designed to deliver reliable ignition performance in compatible Mercury and MerCruiser engines. Replacing spark plugs at the recommended service interval helps maintain smooth engine operation, reliable starting, fuel efficiency, and overall performance.

NGK Standard spark plugs are pre-gapped to the specifications established by the engine manufacturer, although the gap should always be verified before installation. Always use the spark plug specified in your owner's manual, as installing the incorrect plug can reduce engine performance, decrease fuel economy, or lead to engine damage.

The NGK ZFR5F features a pure alumina silicate ceramic insulator for excellent strength and heat transfer, a copper core for efficient heat dissipation, and trivalent metal plating to help resist corrosion and prevent thread seizure in marine environments. The ribbed suppressor seal helps reduce flashover and misfires, while the triple-seal design helps prevent combustion gas leakage.

For the best results, Mercury recommends replacing all spark plugs at the same time to promote balanced engine performance and consistent ignition across every cylinder.

Quicksilver is Mercury Marine's official parts and accessories brand, offering the same OEM quality and fit as Mercury-branded components.

To Confirm Compatibility: Contact our team with your engine serial number at (727) 596-5929 before ordering.