Johnson Pump End Cover F5B/6B

The Johnson Pump End Cover F5B/6B is an essential replacement component for marine engine cooling and circulation systems. This end cover seals the pump housing, preventing coolant leakage and maintaining system pressure during operation. If you run either the F5B or F6B pump models on your vessel, having a quality replacement end cover on hand ensures you can address wear or damage quickly and return to the water without extended downtime.

Built to Johnson Pump's OEM specifications, this end cover fits precisely into the F5B/6B pump assembly, maintaining the tight tolerances required for reliable sealing. The compact design—measuring 3 × 1 × 3 inches and weighing just 0.2 pounds—allows for easy storage in your engine compartment or spare parts locker. Johnson Pump components are engineered for marine duty, meaning this cover resists corrosion and salt water exposure while delivering the durability expected in professional and recreational boating applications.

Boaters who depend on consistent cooling system performance—whether cruising inland lakes or coastal waters—will appreciate the reliability of an authentic Johnson Pump replacement. The F5B/6B end cover is ideal for routine maintenance or emergency repairs, eliminating guesswork about fitment. Installation is straightforward for owners familiar with basic engine work, and having the correct OEM part ensures your pump operates at design pressure without leaks or cavitation issues that can damage impellers and bearing assemblies.