This is the engine sump plug. Supersession RG3744 When used as an engine sump plug / drain plug you need washer XB1093. It is also the drain plug on the Silver Shadow and Bentley T fuel tanks from...

This is the oil pan gasket also known as the sump gasket.   Bentley S1 & Rolls-Royce Silver Cloud I

This is the Drain Plug Gasket fits all Models fitted with automatic gearbox  1945-1955 Silver Wraith, Mk-6, R-type, Silver Dawn Models (fitted with automatic gearbox) 1955-1965 Silver Cloud...