Valve Cover Plug, Valve Cover Plugs, Valve Cover Plugs; 1.22 in. OD;, Molded from neoprene to ensure positive oil seal. Fits most stamped and die cast covers. 2 per set., Makes Positive Oil Seal, Fits Most Stamped Covers, Fits Most Die Cast Covers, Molded From Neoprene, Engine Valve Cover Camshaft Bore Plug