Complete Guide to Billet Valve Covers: 15 Essential Facts Every Builder Should Know | VR Motorsports

Billet Valve Covers Explained A Billet Valve Cover is more than just an engine cover. It protects the valve train, helps seal engine oil within the cylinder head, and contributes to the overall reliability of the engine while enhancing the appearance of the engine bay. Unlike many factory valve covers made from cast aluminium or stamped steel, Billet Valve