LS1 High Pressure Oil Pump

The MELLING LS1 High Pressure Oil Pump (MEL10295) is a premium internal wet sump oil pump engineered for GM LS-series engines, delivering reliable circulation at elevated pressures critical for high-output builds and modified powerplants. Whether you're running a stock LS1 or a heavily modified street engine, this pump maintains consistent oil flow and pressure under demanding conditions where standard pumps fall short.

Designed as an internal pump assembly, the LS1 High Pressure Oil Pump features a 7/8-inch inlet port and high-pressure calibration that supports increased engine RPM, boost applications, and sustained track use without sacrificing oil film strength or bearing protection. Melling's reputation for precision machining and tight tolerances means each pump maintains volumetric efficiency and pressure curve stability across varied throttle loads and oil temperatures. The wet sump design integrates directly into the pan, eliminating complex external plumbing while maximizing cooling surface area—a proven configuration for LS engine builders prioritizing simplicity and durability.

LS1 and Gen III/IV LS engine builders, turbo and supercharger enthusiasts, and street-strip builders rely on high-pressure pumps to protect expensive bottom-end hardware during peak power delivery. Installation is straightforward—the pump bolts into the existing cavity with no modification required—making it an ideal direct replacement during engine assembly or refresh. For any LS build running above 6,500 RPM or modified for increased displacement, this pump ensures oil delivery meets the demands of modern performance demands.