This engine timing cover set is specifically designed for Workhorse, Hummer, Pontiac, and GMC vehicles. It is made of high-quality aluminum material with a polished finish that enhances the overall look of your engine. The set includes a gasket to ensure a secure fit. In addition, this timing cover set has an OE/OEM part number of 12600326 and an interchange part number of 635-515. The color of the set is silver and it is not a vintage part. It is manufactured in China and comes with a California Prop 65 warning. This timing cover set is a great addition to your engine, improving its performance and durability.