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 oil pump designed for serious engine builders and performance enthusiasts who demand reliable, high-volume lubrication under extreme conditions. This pump is engineered to support right-hand-side (RHS) mounting configurations and is ideal for custom engine builds, race applications, and high-horsepower street engines where consistent oil delivery is critical to engine longevity and performance.

The tri-lobe rotor design maximizes displacement per shaft revolution, delivering consistent volumetric flow across a wide RPM range—essential when cooling and protecting high-output engines operating at sustained elevated temperatures. The 4-stage internal geometry reduces cavitation and pressure spikes, ensuring smooth oil delivery that protects critical bearing surfaces, cam drives, and valve train components. The MP (mechanical pump) mount type provides a direct, bolted connection to your engine block, eliminating the complexity of external mounting systems and allowing precise oil flow tuning through gear ratio selection and relief valve calibration.

This pump is best suited for dedicated race engines, street-strip hybrids, and engine swaps where OEM pumps fall short of volumetric demands. The RHS mounting configuration accommodates right-hand distributor or accessory drive layouts common in small-block and big-block engine platforms. Installation requires proper clearance verification and alignment with your oil pan pickup tube; consult your engine's technical documentation or work with an experienced engine builder to ensure optimal pump positioning and bypass valve setup for your specific displacement and intended power level.