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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
Co-molded diaphragm for long life and durability
Locked by turn button from inside or key from outside
Trusted by boaters and boatyards
including: as a coating topper
non-choke Gulper valve technology means no filters
* ZFR6K11 NGK Spark Plugs/H2 marine Co-molded diaphragm for long lifeZFR6K11 NGK Spark Plugs, ZFR6K, Standard spark plugs are chosen by more automotive, motorcycle and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life. Triple gasket sealing process eliminates gas leakage past the shell 99% Highly pure alumina silicate insulator Solid copper core Corrugated ribs to prevent flash over Cold rolled threads to prevent damage
