5/16 Pontiac Valve Cover Gaskets

The 5/16 Pontiac Valve Cover Gaskets are essential sealing components engineered for Pontiac V8 and high-performance engines that demand reliable oil containment and thermal stability. These gaskets prevent oil leakage around the valve cover, protecting your engine bay from messy drips and maintaining proper lubrication flow during extended driving or track use. Whether you're restoring a classic Pontiac muscle car or maintaining a street-driven engine, a quality valve cover gasket is a critical maintenance item that prevents costly engine damage from oil loss.

SCE Gaskets engineered these 5/16 gaskets with precision molding to create a perfect seal against the valve cover flange and cylinder head surface. The 5/16-inch thickness provides optimal compression and material memory, resisting blowout under boost or high RPM conditions while remaining pliable enough to accommodate slight machining variations common in vintage and rebuilt Pontiac heads. The gasket material is formulated to resist hot oil degradation, coolant contamination, and fuel vapor exposure—critical factors in performance applications where valve cover temperatures routinely exceed 250°F.

These gaskets fit Pontiac engines where OEM specifications call for a 5/16-inch gasket cross-section, making them ideal for 400, 455, and select 389-cubic-inch applications. Installation is straightforward: clean the mating surfaces thoroughly with a gasket scraper or wire brush to remove old material and debris, apply a light coating of gasket sealant if desired, and torque the valve cover bolts to manufacturer spec in a star pattern. Proper installation ensures a dry engine bay and confidence that your classic or modified Pontiac will run without oil seepage issues for thousands of miles.