External Oil Pump Two Stage Tri-Lobe RHS GM LS

The External Oil Pump Two Stage Tri-Lobe RHS GM LS from Moroso is an essential upgrade for serious LS engine builders who require dependable oil delivery in high-performance scenarios. This pump is specifically designed for right-hand-side (RHS) mounting on GM LS platforms, ensuring optimal oil pressure and flow even under extreme conditions such as forced induction and high RPMs.

Engineered with a two-stage tri-lobe design, this pump offers superior volumetric efficiency compared to traditional single-stage pumps. It maintains consistent flow rates across the entire RPM range while minimizing pressure spikes that could potentially damage engine seals and gaskets. The tri-lobe gerotor geometry is designed to reduce internal slippage and harmonics, leading to quieter operation and less parasitic drag on the crankshaft.

This pump is particularly beneficial for LS engine enthusiasts, including bracket racers and those building high-performance street machines. Its external mounting configuration simplifies installation in tight engine bays and facilitates easier service access, making it a practical choice for both professional and amateur engine builders.