http://www.almaproducts.com/Transtar...ochure-(7).pdf Call Alma directly and talk to them to make certain you get the correct part number. Pulley, clutch clocking and pressure switch all vary. Then they had me order through a Thermo King up in Michigain somewhere ( I could probably find the reciept if you need me to) They build them per order, i had mine about 3 weeks after i ordered it. I thought the price was reasonable, it was about $120 more than a reman, about $450 total. No leaks or problems yet. I converted to r134a while i was doing it. Ice cold so far.