Jabsco # 50410-1201 Marine Engine Cooling Pump

The Jabsco 50410-1201 is a bronze Flexible Impeller engine cooling pump with a Neoprene Impeller, Full Cam, Buna N Lip Seal, 1-1/4 Inch Hose Barb Ports. This pump is designed to mount directly inside the crank-shaft pulley on Chevrolet small block (305 and 350 C.I.), and 454 C.I. Chevrolet Block engines. The pump may be operated in either rotational direction. The maximum recommended pump speed (engine speed) is 5200 RPM. The maximum recommended discharge pressure should not exceed 10 PSI. When the pump is installed so it operates at or near maximum speed, the inlet plumbing must be designed to minimize the vacuum at the pump inlet. This pump is self-priming, and will self-prime at low or high speeds. It will pump instantly, with dry suction lifts of up to 3m (10 feet), and up to 8m (25 feet) when wetted. This permits cleaner, safer installations. Be sure suction lines are airtight or the pump will not self-prime. Typical discharge pressure is 12 15 PSI, and discharge pressure should not exceed 20 PSI (138 kPa) as excess discharge pressure may cause impeller damage. The Neoprene impeller in this pump depends on liquid pumped for lubrication. Do not run dry for more than thirty (30) seconds as lack of liquid will burn the impeller.

Be sure that the intake system is free from obstructions and the discharge system has less than 10 PSI pressure.