Chevy SBC 350 1955-85 Rubber w/Steel Core Valve Cover Gasket Set - Black the Speedmaster piston oil ring

the Speedmaster piston oil ring spacers will keep your pistons working smoothly throughout the entire operating range

They accurately measure camshaft centerline

they can be reused without damaging the fitting

but there may come a time when your Powerjection system sensors need to be replaced

not just a limited frequency range

Chevy SBC 350 1955-85 Rubber w/Steel Core Valve Cover Gasket Set - Black the Speedmaster piston oil ringSpeedmaster 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