Johnson Pump Impeller Replacement Kit

The Johnson Pump Impeller Replacement Kit is a vital maintenance component designed for boaters and marine enthusiasts who rely on dependable raw-water cooling systems. Over time, impellers can wear out, crack, and lose their efficiency, which can lead to engine overheating and potential damage. This replacement kit is essential for restoring your Johnson pump to its original performance, ensuring reliable coolant circulation whether you're out for a day trip or heading offshore.

This kit includes a precision-engineered impeller and seals that are designed to meet OEM specifications (MPN 09-703P-1). The flexible rubber vanes of the impeller are engineered to create a seal against the pump housing, effectively moving coolant through the engine block and heat exchanger. As these vanes degrade due to UV exposure and thermal cycling, they can no longer compress properly, leading to reduced coolant flow and increased risk of overheating.

Most cruising boaters and fishing captains should consider replacing the impeller every 3–5 years or at the first sign of overheating. This proactive maintenance step is crucial for preventing costly engine repairs and ensuring a safe and enjoyable boating experience. The Johnson Pump Impeller Replacement Kit is compatible with existing Johnson pump housings, making installation straightforward and hassle-free.