DS Oil Pump Tri-Lobe 4-Stage RHS MP Mount

The DS Oil Pump Tri-Lobe 4-Stage RHS MP Mount by MOROSO is a precision engineered lubrication component designed for high-performance engine builds and serious mechanical restorations. This tri-lobe gear pump is built for enthusiasts and professional mechanics who demand consistent oil delivery across a wide RPM range, ensuring critical engine components receive adequate pressure and flow under demanding conditions. Whether you're assembling a street machine, race engine, or restoring a classic muscle car, this pump delivers the reliable hydraulic performance that separates a well-built engine from a mediocre one.

The four-stage design of this oil pump provides progressive flow characteristics, meaning oil delivery increases smoothly as engine speed rises, preventing excessive pressure spikes at idle while maintaining robust circulation at sustained high RPM operation. The tri-lobe gear configuration ensures efficient displacement with minimal internal leakage, maximizing volumetric efficiency compared to conventional two-lobe designs. The RHS (Right-Hand Shaft) configuration with MP (mechanical pump) mounting allows direct integration into small-block engine platforms, while the purpose-built casting geometry minimizes turbulence and heat generation within the pump body, critical factors in protecting bearing surfaces and extending engine longevity.

This pump is ideal for builders constructing carbureted or fuel-injected performance engines, particularly those running modified cylinder heads, aggressive camshafts, or elevated boost pressures that demand superior oil supply. The MP mount configuration integrates seamlessly with Chevrolet small-block and select big-block applications using mechanical fuel pump mounting bosses, simplifying installation in tight engine compartments. At 10.35 pounds with compact dimensions, the DS Oil Pump Tri-Lobe maintains a lightweight footprint without sacrificing displacement or pressure capability, making it an excellent choice for street cars, race engines, and vintage restorations where reliability and performance cannot be compromised.