Rear Main Cover Gasket - LS

The Rear Main Cover Gasket - LS from Chevrolet Performance is an OEM-specification replacement seal engineered to prevent oil leakage at the rear main bearing housing on LS-series engines. This critical engine component is essential for anyone rebuilding, servicing, or restoring an LS-powered vehicle. Whether you're performing routine maintenance, addressing seepage, or completing a full engine overhaul, this gasket ensures a reliable, oil-tight seal that protects your investment and maintains engine integrity.

Constructed with a rubber and steel composite design, this rear main cover gasket combines the durability of metal reinforcement with the sealing properties of engineered rubber. The steel backing provides structural support and resistance to warping under the thermal and mechanical stresses of engine operation, while the rubber facing creates a compliant, oil-resistant seal against the mating surfaces of the rear cover and block. The gasket's precise dimensions and OEM engineering ensure proper fitment and seated contact, minimizing the risk of blow-out or migration that could result in oil loss during normal driving conditions.

This gasket is ideal for engine builders, performance shops, and enthusiasts working on any LS-platform engine—including the LS1, LS2, LS3, LS9, and LSA variants found in Corvettes, Camaros, Silverados, and engine swap applications. Installation is straightforward when the rear main cover is removed; proper cleaning of sealing surfaces and careful alignment of the gasket during installation will maximize service life and seal integrity. Chevrolet Performance parts meet factory specifications and are trusted by professional rebuilders and DIY mechanics alike for dependable, long-term performance.