Jabsco Impeller Kit - 12 Blade - Neoprene - 2-&#188" Diameter

The Jabsco Impeller Kit - 12 Blade - Neoprene - 2-¼" Diameter is a direct-replacement flexible impeller assembly designed for marine engine cooling systems and automotive water pump applications. As a mechanic who regularly services cooling systems, you'll recognize this as the wear item that keeps centrifugal pumps efficient and reliable. The impeller is the heart of any marine or specialty automotive cooling circuit, and replacing it before degradation occurs prevents catastrophic overheating, cavitation damage, and seal failure.

This Jabsco kit features a 12-blade neoprene impeller with a 2-¼" diameter and spline drive engagement, paired with a brass insert hub for corrosion resistance and durability in saltwater or freshwater environments. Neoprene construction delivers flex and resilience under thermal cycling, allowing the blades to collapse slightly during priming and then re-expand to move fluid efficiently. The 5/8" shaft diameter and 1-¼" shaft width match OEM Jabsco pump housings precisely, and the spline drive eliminates slip that can occur with keyway systems. This design ensures consistent displacement with every rotation, critical for maintaining adequate circulation pressure and flow rate in high-heat or high-demand cooling loops.

Anyone running a marine inboard engine, auxiliary cooling system, or specialty automotive application with a Jabsco pump should stock this impeller kit as routine maintenance. Impellers typically degrade every 3–5 years depending on runtime, water quality, and ambient temperature, so preventive replacement keeps downtime out of the equation. Installation is straightforward: drain the cooling circuit, remove the pump cover, slide out the old impeller, and press in the new assembly—a 15-minute job that eliminates the risk of mid-season failure. Verify your pump model matches the spline drive specification before ordering to ensure proper engagement.