These are the original cotton valve stem seals fitted to all Straight 6 engines. 1945-1955 Silver Wraith, Mk-6, R-type, Silver Dawn Models  1956-1959 Silver Cloud I & Bentley S1 (6...

This is the circlip for the valve stems. There are 6 per engine (sold separately)  1946-1955 RR Silver Dawn & Silver Wraith, Bentley MkVI & R Type 1956-1959 Bentley S1 &...

This is a rubber valve stem seal that slides on to the exhaust valve.  1982-1994 Continental, Corniche, Mulsanne, Spirit, Spur, Turbo (VIN 6751-46740)  

This is the updated valve stem seal with washer.  1946-1955 R-type, Silver Wraith, Silver Dawn, Mk-VI, S1, 1955-1959 Bentley S1 & Silver Cloud I

This is a set of 4 Bentley tire valve stem caps in chrome with a white B in center surrounded by black.