BESTgasket is the world's premier manufacturer of gaskets for vintage and classic American cars and trucks. BEST Gasket timing cover gasket set for 1954-1964 Ford 239ci, 256ci, 272ci, 292ci, and 312ci OHV Y-block V-8 engines. P/N GS12054. BEST Gasket is the leading name in sealing performance in the restoration industry.