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I pulling my hair out, looking for the right A/C Compressor for my '77. Every parts house web site I go on, including AC Delco's site. They are giving me 2 different part numbers, 15-20206 and 15-21764. Will both fit, the 15-20206 is saying something about a switch. I don't know what to order. I want an AC Delco unit, not an after market one... HELP!!!!!
Air Conditioning Compressor
Part Number: 15-21764
Product Notes:
A/c Compressor
w/R4 Compressor; New w/Clutch; w/5 Dia Pulley; w/Single Groove Pulley; ; Metric Threads; Due to New enhancements, compressor may differ in; appearance from OE Please refer to installation kit provided w/each; compressor. May Req Metric Bolt Kit; 1 Per Veh
Per Vehicle: 1; Years: 1977-1979
This looks like the one I used....mine is a July '77 production car. Mine is second design. ....
Last edited by RIO68; Aug 24, 2016 at 10:39 PM.
Reason: info added
One compressor has a switch mounted in the rear of the compressor. You can use either compressor. You don't need the switch unless you have wiring for it.
AC Delco Compressor
