Johnson Pump Impeller for F5B-9
Johnson Pump Impeller for F5B-9. A factory replacement impeller of water pumps used on many older GM based Small Block engines. Johnson water pumps have been used by many marine engine manufacturers for crank driven cooling systems. The F5B-9 pump was common on older GM Small Block based marine conversions. This F5B-9 replacement impeller is ideal for engines that are not run a regular basis. Each impeller features an unique marine rubber compound, MC97, engineered to retain flexibility even after periods of being idle. MC97 rubber also resists swelling and minimizes failures caused by fatigue to provide a longer service life. Whether you use your boat daily or once a month, these factory impellers are an excellent choice to keep your cooling system in optimum condition. Key Features Able to withstand long periods of inactivity MC97 compound reduces swelling and retains flexibility to maximize pump efficiency OEM replacement for F5B-9 pumps used on many GM Small Block based marine engines Excellent self-priming abilitiesGreat as a spare for unexpected failures
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