LS Lifter Valley Block Cover

The LS Lifter Valley Block Cover is a purpose-built engine component designed for Chevrolet Performance LS-series engines, where it seals and protects the valley area between cylinder heads. This aluminum cover serves dual functions: it prevents oil and debris from contaminating internal engine passages while simultaneously providing a breather outlet via a 3/8-inch hose barb connection. Engine builders and performance enthusiasts rely on valley covers to maintain proper engine cleanliness during assembly and operation, making this OEM-specification part essential for any LS platform rebuild or restoration.

Constructed from lightweight aluminum in a natural finish, the LS Lifter Valley Block Cover is engineered to withstand engine bay temperatures while resisting corrosion in high-moisture environments. The 3/8-inch hose barb breather port allows crankcase vapors to escape safely, preventing pressure buildup that could damage seals or gaskets—a critical feature in turbocharged or supercharged applications. The cover arrives with all necessary gaskets and mounting hardware included, ensuring a complete, ready-to-install solution that meets GM specifications for LS1, LS2, LS3, and derivative engine platforms.

Professionals restoring stock Chevrolet Performance engines, custom engine builders, and hot rodders benefit most from this valley cover's reliability and exact fitment. Installation is straightforward—simply position the cover over the lifter valley, secure using the provided hardware, and connect a breather hose to the barb fitting. This part is compatible with all standard LS-series applications and integrates seamlessly with both carbureted and fuel-injected setups. For anyone seeking OEM-quality valley protection for sale, this Chevrolet Performance component delivers proven durability backed by GM engineering standards.