Oil Pump Assembly Gen-V LT1/LT4

The Oil Pump Assembly Gen-V LT1/LT4 from Chevrolet Performance (MPN 12686434) is a wet sump internal oil pump engineered for GM's fifth-generation LT-series small-block platform. This pump assembly delivers reliable oil circulation and pressure management across the entire RPM band, making it an essential component for engine builders and performance enthusiasts working with LT1 or LT4 powerplants.

Designed as an internal wet sump pump, this assembly integrates directly into the engine block and draws oil from the pan for distribution throughout the engine. The Gen-V LT architecture incorporates precision bearing surfaces and optimized pump geometry to handle the increased flow demands of modern high-rpm, high-horsepower applications. Weight and dimensions—8.22 lbs, measuring 11.45 x 9.3 x 12.7 inches—reflect the compact, integrated design characteristic of Gen-V architecture, enabling tight engine bay fitment in both OEM and custom installations.

This pump assembly is essential for any engine rebuild, restoration, or performance upgrade involving an LT1 or LT4 engine. Whether you're assembling a crate engine, restoring a C8 Corvette powerplant, or building a custom swap application, proper oil pump function is non-negotiable for engine longevity and reliability. Chevrolet Performance OEM components ensure compatibility with all genuine LT-series block and pan configurations, eliminating guesswork during engine assembly.