The Mercruiser 3.0 Raw Water Pump is a marine pump designed to circulate cooling water through the engine. It ensures efficient heat transfer by drawing raw water from the surrounding environment. This pump is essential for preventing engine overheating in marine applications.

The Mercruiser 3.0 Raw Water Pump is a marine-grade impeller pump designed for raw water cooling systems. Key specifications include:

Size: Typically fits 3.0L Mercruiser engines, with a housing diameter of approximately 4-5 inches.

Grade: Marine-grade construction for saltwater and freshwater use.

Viscosity: Compatible with standard marine cooling water viscosity; not designed for high-viscosity fluids.

Buoyancy: N/A (non-buoyant component).

Material: Housing made of corrosion-resistant aluminum or stainless steel; impeller typically composed of neoprene or nitrile rubber.

Flow Rate: Approximately 20-30 gallons per minute (GPM) depending on engine RPM.

Pressure Rating: Operates at low to moderate pressure (10-15 PSI).

Seals: Viton or silicone seals for durability in marine environments.

Mounting: Bolt-on design with standard Mercruiser mounting patterns.

Impeller Type: Flexible rubber vanes for self-priming and debris resistance.