The Impeller Mercruiser 5.7 Marine Pump is a critical cooling system component for Mercruiser 5.7L engines. It circulates water to prevent overheating by drawing in water through the impeller's rotating vanes. Regular maintenance is essential to ensure optimal performance and prevent engine damage.

The Impeller Mercruiser 5.7 Marine Pump typically features the following specifications:

Size: 3.5 inches (89 mm) in diameter

Grade: Marine-grade rubber (Neoprene or Nitrile)

Viscosity: Compatible with 10W-30 or 20W-40 marine engine oil

Buoyancy: Non-buoyant, designed for submerged operation

Material: Ethylene Propylene Diene Monomer (EPDM) or Nitrile rubber for durability

Operating Temperature: -40°F to 250°F (-40°C to 121°C)

Rotation: Clockwise (CW) or Counter-Clockwise (CCW) depending on application

Flow Rate: Approximately 35-45 gallons per minute (GPM)

Pressure Rating: 10-15 PSI (varies by model)

Compatibility: Fits Mercruiser 5.7L V8 engines and similar marine applications