1954-1955-1956 Oldsmobile 324 single groove water pump pulley. GM parts book shows correct application for Olds engines w/o power steering and non ac 1952-1962. Very nice restored condition. The pulley was media cleaned, re-painted and waxed several times.. ready for a new life. Removed from a 1955 Olds 324 motor but not needed. Please look at all the images and email me with any questions (last pic for reference). As always, thanks for looking.