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

The BBC DS Oil Pump 4-Stage Tri-Lobe RHS MP Mount from MOROSO is a high-performance engine oil circulation system engineered for big-block Chevrolet racing and street applications. This pump is designed for builders who demand reliable oil delivery under sustained high RPM operation, where factory pump capacity becomes a bottleneck. Whether you're assembling a 454, 427, or other BBC engine destined for drag racing, circle track competition, or serious street performance, this tri-lobe design ensures consistent pressure and flow when it matters most.

The four-stage tri-lobe rotor configuration delivers superior volumetric efficiency compared to standard two-lobe pumps, moving more oil per crankshaft revolution at lower input torque. The right-hand shaft rotation (RHS) and MP (mechanical pump) mounting interface make this pump compatible with common BBC installations and aftermarket timing cover setups. Cast iron construction and precision internals ensure durability through thousands of high-RPM cycles, while the optimized lobe geometry minimizes cavitation and maintains consistent delivery across the full rev range—critical for protecting expensive engine components during peak power events.

This pump is ideal for engine builders, race teams, and enthusiasts building fuel-injected or carbureted BBC engines targeting 6500+ RPM. The RHS MP mount configuration integrates seamlessly with aftermarket timing covers, stroker kits, and custom oiling systems common in performance builds. Installation requires confirmation of your crankshaft rotation direction and timing cover compatibility; cross-reference against your specific BBC block variant. At 10.9 lbs, it adds minimal weight while providing the oil delivery volume necessary to keep bearing clearances film-rated under sustained load—an investment that pays dividends in engine longevity and peak performance reliability.