The Outboard Motor Lower Unit Oil Pump is a critical marine pump that circulates lubricating oil within the lower unit of an outboard motor. It ensures smooth operation by reducing friction and heat in the gearcase components. Proper maintenance of this pump is essential for the longevity and performance of the motor.

Size: Typically 1.5 to 3 inches in diameter, depending on motor size.

Grade: SAE 90 or API GL-5 for marine applications.

Viscosity: 75W-90 or 80W-90 for optimal performance.

Buoyancy: Not applicable (submerged operation).

Material: Aluminum or stainless steel housing with nitrile or viton seals.

Flow Rate: 1-5 GPM (varies by pump model).

Pressure Rating: 10-50 PSI (depends on application).

Compatibility: Designed for lower unit lubrication in outboard motors.

Seal Type: Mechanical or lip seals for water resistance.

Operating Temp: -20°F to 250°F (-29°C to 121°C).