15000K Replacement Impeller Kit | Johnson Pump JP-09-707B-1

15000K Replacement Impeller Kit | Johnson Pump JP-09-707B-1

This 15000K Replacement Impeller Kit delivers OEM-equivalent performance for marine raw water cooling systems. Engineered with MC97 elastomer construction, the impeller provides superior durability in saltwater, brackish, and freshwater environments where thermal cycling and corrosive conditions demand material resilience. Direct replacement compatibility with Sherwood 15000K and Jabsco 18327-0001-P pump housings ensures seamless integration into existing cooling circuits without modification. The 12-blade geometry optimizes volumetric flow and maintains consistent discharge pressure across typical marine engine operating envelopes. Key technical attributes include a 62.3 mm outer diameter, 31.8 mm axial width, and keyed shaft drive for positive rotational coupling. MC97 elastomer paired with neoprene sealing surfaces resists cavitation erosion, thermal degradation, and chemical attack from marine environments—extending service intervals and reducing unplanned maintenance. This replacement kit restores cooling system efficiency without full pump replacement, minimizing vessel downtime and operational costs. Suitable for inboard gasoline and diesel engines requiring reliable raw water circulation and thermal management.

• Kit includes impeller, JP original impeller lubricant, o-ring, gasket, and 4 x cover screws 
• Key drive type
• 12 blades
• 65.2 mm / 2.56 inches outer diameter 
• 51.4 mm / 2.02 inches width 
• Manufactured with MC97 rubber compound which allows for self-priming and minimizes fatigue failure with a service life up to 4x longer than other brands in some applications
• Fits Cummins 4B, Cummins 6B, Cummins 4.2L QSD, Mercruiser 7.3L Diesel, Mercruiser 4.2 L QSD, and Malibu AXIS M6Di engine cooling pumps