This is a clean used Original Ford Water Pump Pulley for a 1968 1969 Ford Mustang Fairlane Torino Ranchero Shelby GT500 GT500KR Comet Cougar Cyclone Montego with a 428CJ 428 Cobra Jet V8. This is Ford part number C8OZ-8509-A. It is a 3 Sheave pulley with the two inner sheaves measuring 6" diameter and one outer sheave ( closest to the radiator )  measuring little over 5" in diameter.  This is clean and ready to bolt on. If you have any questions or need other 428 Cobra Jet parts please ask.  Thanks for looking and Happy Ebaying! (050424)