Valve Cover Gasket Set SBM 318/340/360 64-92

The Valve Cover Gasket Set for Small Block Mopar 318/340/360 engines (1964–1992) is a precision sealing component engineered to prevent oil leakage at the cylinder head interface. This gasket set features a 0.188-inch thick construction with a steel core reinforced by silicone rubber, delivering reliable compression and durability across decades of engine operation. Whether you're rebuilding a classic Mopar muscle car, restoring a vintage truck, or maintaining an existing engine, this gasket set addresses one of the most common leak points in the small block architecture.

The steel core construction provides structural integrity under thermal cycling and engine vibration, while the silicone rubber facing conforms to valve cover and cylinder head surfaces to create a consistent seal. The 0.188-inch thickness is engineered specifically for the 318, 340, and 360 displacement specifications, ensuring proper gasket crush and maintaining oil containment without over-compression that could damage mounting surfaces. This thickness specification is critical—incorrect gasket thickness can result in either inadequate sealing or pressure against fastener threads that leads to oil weeping over time.

Small Block Mopar gasket replacement is standard maintenance during any top-end service, engine swap, or restoration. Oil seeping from valve cover joints indicates gasket degradation from heat exposure and repeated compression cycles. This gasket set is sold as a complete set for both covers, covering the full sealing requirements for a standard small block Mopar configuration. Suitable for high-performance street engines, stock rebuilds, and long-term storage conversions, this product restores factory sealing standards using proven elastomer technology.