Small Block Chevy Xtreme Marine Seal Valve Cover Gasket 

Small Block Chevy Xtreme Marine Seal™ Valve Cover Gasket

There is nothing more frustrating than a leaking valve cover seal, so don't settle for anything less than the best. That's why professional engine builders nationwide demand Xtreme Marine Seal valve cover gaskets. Produced from a blend of polymer and cork to provide a gasket that will last.