DS Oil Pump Tri-Lobe 4-Stage LHS FP Drive

The DS Oil Pump Tri-Lobe 4-Stage LHS FP Drive by MOROSO is purpose-built for serious engine builders and performance mechanics seeking reliable oil circulation under extreme operating conditions. This high-volume oil pump delivers consistent flow rates essential for forced-induction applications, racing engines, and heavily modified powerplants where factory pumps fall short. Whether you're building a dedicated track engine or upgrading a street/strip hybrid, this tri-lobe design addresses the critical need for adequate lubrication when horsepower and boost levels exceed original equipment specifications.

The tri-lobe rotor configuration delivers superior volumetric efficiency compared to traditional gear-type pumps, with four distinct stages optimizing pressure delivery across the entire RPM band. The left-hand (LHS) orientation accommodates specific crankshaft and block configurations, while the FP drive coupling ensures direct, positive engagement with the camshaft or dedicated drive system. This design minimizes parasitic losses while maximizing flow consistency—critical factors when running elevated oil temperatures in turbocharged or supercharged engines where viscosity stability directly impacts bearing protection and ring seal integrity.

Mechanics and engine builders frequently specify MOROSO's tri-lobe pumps for LS engine conversions, small-block Chevrolet performance builds, and Late-Model Muscle applications where space constraints and OEM block modifications require precision fitment. The LHS configuration pairs with specific block machining and drive train setups—confirm compatibility with your engine's crankshaft rotation direction and existing fuel pump drive system before installation. This pump's reputation for durability under sustained high-RPM and high-boost conditions makes it the preferred choice for shops building competition engines, restomod projects, and customer vehicles demanding maximum reliability and performance longevity.