As the leading ship supplier in Ross Dependency, Mercruiser 5.0 Mpi Water Circulating Pump, we specialize in delivering high-quality Lower Unit Gear Lube Pump with unmatched speed and reliability. Trusted by shipowners and masters worldwide, our team ensures your vessel gets everything it needs — on time, every time.
The Lower Unit Gear Lube Pump is a marine pump designed to circulate lubricating oil in the lower unit of marine engines. It ensures smooth operation and reduces friction between moving gears and components. This pump is essential for maintaining the longevity and efficiency of marine propulsion systems.
Size: Typically ranges from 1/2" to 2" discharge ports
Grade: Marine-grade lubricants (e.g., SAE 90, SAE 140)
Viscosity: 75W-90 to 85W-140, depending on application
Buoyancy: Not applicable (submerged operation in lower unit)
Material: Aluminum, bronze, or stainless steel housing; nitrile or viton seals
Flow Rate: 1-10 GPM (varies by model)
Pressure Rating: 50-150 PSI
Operating Temperature: -20°F to 250°F (-29°C to 121°C)
Drive Type: Electric or mechanical (gear-driven)
Compatibility: Works with EP (Extreme Pressure) gear oils
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