The Lower Unit Fluid Pump is a marine pump designed to circulate lubricating fluid within the lower unit of outboard or sterndrive engines. It ensures proper cooling and lubrication of gears and bearings to prevent overheating and wear. These pumps are essential for maintaining the longevity and performance of marine propulsion systems.

Size: Typically ranges from 1.5" to 4" in diameter, depending on application.

Grade: Marine-grade, corrosion-resistant materials.

Viscosity: Compatible with fluids ranging from 10W-30 to SAE 90 gear oil.

Buoyancy: Neutral buoyancy in water, depending on material density.

Material: Stainless steel, bronze, or high-grade aluminum alloys.

Flow Rate: 5-50 GPM (gallons per minute), depending on pump size.

Pressure Rating: 50-150 PSI, varies by model.

Seals: Nitrile or Viton for chemical and saltwater resistance.

Mounting: Bolt-on or flange-mounted configurations.

Temperature Range: -20°F to 250°F (-29°C to 121°C).

Compatibility: Suitable for marine engines, outboard lower units, and bilge systems.