This is the exhaust manifold stud that retains the manifold to the block.  The washers are X4404Z and the brass nuts are EW1833 that fit onto these studs Note: 6 studs per manifold (Sold...

Exhaust manifold to cylinder head stud.  8 required per manifold (Sold Each) 1959-1965 V8 Models Silver Cloud II, III & S-2,3, PV's, Continental's

This is the exhaust manifold stud nut. Note: Sold Each 1956-1959  Silver Cloud I and Bentley S-1

This is the brass nut for the exhaust manifold stud (KB359Z).There is one nut per stud and six studs per manifold (Sold Each) 1946-1955 Rolls-Royce Silver Dawn & Silver Wraith, Bentley MkVI...

This is the exhaust manifold to cylinder head stud. 1956-1959 Rolls Royce Silver Cloud I and Bentley S-1 Models