This is the Standard Size of the Exhaust Valve Seat for V8 Models 1966-1980 All Models 1973-1982 Camargue (VIN 14674-50776) 1980-1993 Continental, Continental R, Corniche, Eight, Mulsanne, Spirit, Sp

This is the Exhaust Valve  1966-1980  Silver Shadow, T-series, Shadow II, T-2, Silver Wraith II (VIN 1001-SRX38917)

Exhaust Valve 1926-1936 20/25HP (VIN# GLR26 - GBT22) 1936-1938 25/30HP

This is the exhaust valve. Old part# UE41083 & UE72837 1979-1980 (38972-41686)1981-1994 (1001 to 46740)  

This is the exhaust valve for the V8 engine Silver Cloud and S-series  PART NUMBER: UE9690