Jabsco Impeller Kit - 9 Blade - Nitrile - 3-3/4" Diameter x 3-1/2" W, 1" Shaft Diameter

The Jabsco Impeller Kit – 9 Blade – Nitrile – 3-3/4" Diameter x 3-1/2" W, 1" Shaft Diameter is an essential replacement part for maintaining raw-water cooling systems in both recreational and commercial vessels. Boaters understand that an impeller failure can lead to engine overheating, making this kit a critical component for reliable operation.

Constructed from durable nitrile elastomer, this nine-blade impeller is designed to optimize flow rate and pressure head, ensuring consistent cooling without cavitation or excessive vibration. The nitrile material offers superior resistance to thermal cycling, ozone exposure, and saltwater corrosion compared to natural rubber, which helps extend its service life and reduces the risk of mid-season failures.

This replacement impeller is compatible with Jabsco cooling systems commonly found in center console fishing boats, cruising sailboats, and auxiliary diesel installations. Regular preventive replacement every 3–5 years, depending on water quality and operating hours, is recommended to maintain optimal engine performance.