This is a nice original power steering pump pulley for an early Ford Mustang. Fits 56/66 289 without A/C and with a Ford pump. Won't fit early 65 with an Eaton pump. Also fits 67 390 without A/C and without dual belt alternator. Ford part number C5A2-3A733-C. Stamped "AC" on pulley. Pulley is sandblasted and pained, has some light pitting on the front, overall very good condition.