The Big Block Chevy Timing Chain Cover features iconic Chevy Orange finish with embossed CHEVROLET & Bowtie Emblems are engineered to strict GM standards. The timing chain cover is made from stamped steel and supplied with a GM production oil seal installed. Direct replacement for all big-block front covers that use a bolt-on timing pointer, you can rely on a reliable installation. Cap off the total look when used with matching air cleaner, valve covers and breather cap. Fits 1965 to 1990 Big Block Chevy Engines. Replacement oil seal: GM P/N 3860095.