Valve Cover Gasket Set - 426 Hemi

The Valve Cover Gasket Set – 426 Hemi by FEL-PRO is engineered for Mopar 426 Hemi engine builders and restoration enthusiasts who demand factory-spec reliability on legendary muscle car powerplants. This pair gasket set addresses one of the most common leak points in high-performance Hemi applications: the valve cover seal interface. Whether you're rebuilding a vintage Dodge or Plymouth with original 426 Hemi architecture or replacing aged seals on a survivor, this gasket set delivers the durability and precision fit that prevent oil seepage and contamination.

Each gasket features a 0.250-inch thick construction with a steel-core cork and rubber composite material—the OEM-preferred design for Hemi valve covers. This hybrid material composition balances conformability with structural integrity, allowing the gasket to seat properly around port surfaces and fastener bosses while withstanding the thermal cycling and vibration typical of big-block engines. The steel core prevents extrusion under pressure, while the cork-rubber facing creates a reliable seal across the entire gasket face, resisting oil degradation and maintaining clamping force over extended service intervals.

Technicians and engine builders restoring 426 Hemi-equipped vehicles benefit from this pair set's plug-and-play fitment—no custom machining or gasket matching required. FEL-PRO's OEM-equivalent design ensures compatibility with factory valve cover geometry across all 426 Hemi applications, from 1966 through 1971 production. Installation is straightforward: clean both mating surfaces thoroughly, position the gaskets, and torque valve cover fasteners to specification in a star pattern for even pressure distribution. This gasket set is essential for any Hemi rebuild where reliability and leak-free operation are non-negotiable.