Disconnect the hoses and remove the old impeller housing carefully.

Install the new impeller, ensuring proper alignment and lubrication.

Reassemble the pump, reconnect hoses, and test for leaks.

Size: 3-1/2 inches (typical diameter)

Grade: OEM or equivalent marine-grade

Viscosity: Compatible with standard marine engine coolant (ethylene glycol-based)

Buoyancy: N/A (non-buoyant, submerged operation)

Material: Nitrile rubber (NBR) or neoprene (for corrosion and wear resistance)

Rotation: Clockwise (standard for Mercruiser 5.0 applications)

Shaft Fit: Precision-molded for 1/2-inch or 5/8-inch pump shafts

Blade Count: 6 to 8 vanes (varies by model)

Operating Temp: -20°F to 200°F (-29°C to 93°C)

Chemical Resistance: Fuel, oil, and coolant-resistant