Mickey Thompson M/T Small Block Chevy SBC 283-400 Aluminum Valve Covers 140R-50B are high-quality valve covers made of aluminum. They are designed for small block Chevy engines ranging from 283-400. The valve covers are manufactured by Mickey Thompson and have part numbers 140R-50B and 3276000.

These covers haf the gasket put on them and it was fitted to the engine but the engine was never started with these covers on so they have not been used at all. I took the gaskets off and cleaned them up, otherwise these are brand new.