Compressor: 66-81 GM huge use.. w/5" dia pulley - NEWThis is a brand new A6 style GM compressor.. one of the original pulleys used in 68 & 69 GM Vehicles pretty much across the range. Picture is correct. ID's also by the fact it runs a 5" wide pulley. These are a USA remanufactured unit by GM AC Delco. No exchange needed. Always have a qualified specialist work on your AC. Check oil levels & lublication before starting. ALWAYS have the compresser systems switches checked for operation BEFORE starting..