Polished Chrome Plated Oil Filler Cap for the Alloy valve covers we sell including those for the MG Midget, MGA, MGB, Triumph Spitfire and Triumph TR6. These caps are vented and fit the stock valve covers for MGA, MGB, and MG Midgets except for the 1500. They do not fit the stock stamped metal valve covers for MG Midget 1500, Triumph Spitfires or TR6 GT6.