Valve Cover Gasket Set SBC 86-97 Center Bolt

The MAHLE ORIGINAL/CLEVITE Valve Cover Gasket Set for SBC (Small Block Chevy) 86-97 center bolt configuration is a precision OEM-specification replacement gasket pair engineered to seal the valve covers on first and second-generation small-block Chevrolet engines. Built from cork and fiber composite material at 0.250 inches thick, this gasket set restores the critical seal between the valve cover and cylinder head that deteriorates with heat cycling and engine age.

Cork/fiber construction offers the thermal stability and conformability required for small-block applications, distributing clamping force evenly across the valve cover surface. The center bolt configuration matches the fastening design common to 1986–1997 SBC engines, ensuring correct fit without modification. At 0.250 inches, the gasket thickness is precisely calculated to maintain proper compression against the cylinder head casting without over-tightening the valve cover studs—a critical detail that prevents stud breakage and oil weeping at the seal interface. This pair format covers both left and right valve covers, completing a full seal replacement in a single purchase.

Owners of 1986–1997 small-block Chevrolet engines—whether in street rods, truck builds, marine applications, or high-mileage stock rebuilds—benefit from this gasket set when addressing oil seepage around the valve covers. Over time, original cork gaskets harden and compress, leading to persistent oil leaks that can accelerate dirt accumulation on engine surfaces and create a fire hazard under extreme conditions. Replacing worn gaskets with OEM-specification alternatives eliminates this common failure point and restores engine compartment cleanliness. MAHLE ORIGINAL/CLEVITE is the OEM gasket supplier for Chevrolet, so this part meets factory engineering requirements for fit, material durability, and sealing performance.