Oldsmobile 400 425 455 Blue 3/16 Thick Rubber Steel Core Valve Cover Gasket Set In some instances

In some instances

these replacement mounting cap assemblies from Speedmaster will get your project back on the road

These Speedmaster head bolt bushing kits allow you to use stock or aftermarket head bolts with Speedmaster or other aftermarket cylinder heads

Upgrade a standard C4

Speedmaster only offers planetary gear sets provide superior torque output for modern high-output motors

Oldsmobile 400 425 455 Blue 3/16 Thick Rubber Steel Core Valve Cover Gasket Set In some instancesSpeedmaster valve cover gaskets are manufactured from high quality rubber, which is molded over and vulcanized to a rigid steel frame. They won't leak, blow out, or get sucked in, the way stock or inferior quality aftermarket gaskets can. These gaskets feature superior quality rubber and steel, which outlast cork and rubber composite designs to provide years of dependable service, especially if you frequently have to remove and reinstall the valve