DS Oil Pump Three Stage Tri-Lobe RHS GM LS

The DS Oil Pump Three Stage Tri-Lobe RHS GM LS by MOROSO is a high-performance engine oil pump engineered for LS-based V8 engines running on right-hand-side (RHS) configurations. Built for serious enthusiasts and professional engine builders, this pump delivers superior oil distribution and pressure consistency compared to OEM units, making it essential for forced-induction builds, high-RPM applications, and engines where reliability under extreme conditions cannot be compromised. Whether you're upgrading a stock LS or building a race-ready powerplant, this tri-lobe design provides the flow capacity and durability that separates quality builds from unreliable ones.

The three-stage tri-lobe rotor configuration is the key to this pump's performance advantage. Unlike traditional two-lobe designs, the tri-lobe geometry increases oil displacement per revolution, enabling higher flow rates at lower RPM and maintaining consistent pressure across the entire operating range. This design reduces cavitation, improves bearing protection, and ensures that critical engine components—main bearings, rod journals, and cam lobes—receive adequate lubrication even during aggressive acceleration or sustained high-RPM operation. The RHS orientation matches engines with right-hand-side mounted fuel pumps and accessories, ensuring clean integration into your engine bay without adapters or modifications.

This pump is ideal for GM LS engine swaps, turbocharged or supercharged LS builds, and naturally aspirated engines pushing high horsepower and sustained RPM levels. Installation requires proper timing gear alignment and verification of oil passage clearance—tasks that demand mechanical competence but reward builders with confidence in their lubrication system. At 9.25 lbs and compact dimensions, it installs cleanly without interference, and it pairs seamlessly with upgraded oil coolers, remote filter systems, and high-flow oil pans common in modern LS performance builds.