idosubaru Posted June 18, 2013 Share Posted June 18, 2013 (edited) *** No discussion or comments, goal is one thread with A/C oring sizes compiled for easy access. I'll edit this thread with any updates as long as I'm allowed. The compressor orings are notorious for degrading faster than the others, they are usually hard/brittle and the rest in the system are still fine. I've never seen the other orings be that way so they're not that important but list them if you do them. Year, Model, Engine, A/C compressor brand: 1999 Impreza 2.2, ZEXEL: Compressor: 17.8mm x 2.5mm Compressor: 10.8mm x 2.4mm Drivers side condensor: 10.8mm x 2.4mm 2003 3.0 H6 OBW (stock OEM compressor) Top-rear Compressor: 17.8mm x 2.5mmLeft ('high') side Compressor: 10.8mm x 2.4mm Edited June 19, 2013 by grossgary Quote Link to comment Share on other sites More sharing options...
lmdew Posted June 18, 2013 Share Posted June 18, 2013 I usually end up taking them to the dealer and matching them. Even the dealer books are not so good. Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted June 19, 2013 Share Posted June 19, 2013 2003 3.0 H6 OBW (stock OEM compressor) top-rear Compressor: 17.8mm x 2.5mm left ('high') side Compressor: 10.8mm x 2.4mm used the blue/green w'ever 'variety pack' o-rings from O'reilly's used some wire to hold the throttle and CC cables 'up-and-back'. i alsopulled the electrical connection and tucked it under out of the way.Used a rag/paper towels to clean up around the areas. I pulled the top-rear fittingand used a toothpick to get the old o-ring off. It was much lessflexible than the replacements and deformed/flattened. The large o-ringmentioned was a good fit. I lubed it with a little oil that was sittinginside the compressor. Then I did the same on the left-side fitting(high side). The o-ring was a little more difficult to remove. It wasalso stiff and deformed/flattened. I think the 10.8mm x 2.4mm is thebest fit here. Quote Link to comment Share on other sites More sharing options...
forester2002s Posted June 28, 2013 Share Posted June 28, 2013 2002 Forester 2.5 MT (stock OEM compressor): - LP side o-ring: Subaru #73039TA0120 (21.50 mm OD; 16.80 mm ID) - HP side o-ring: Subaru #73039TA0140 (15.80 mm OD; 11.10 mm ID) Quote Link to comment Share on other sites More sharing options...
Fairtax4me Posted June 5, 2014 Share Posted June 5, 2014 1995 Legacy 2.2 with Zexel compressor Compressor High: 10.9mm x 1.9mm Compressor Low: 13.7mm x 1.9mm Condenser LH side: 10.9mm x 1.9mm Condenser RH side: 6.07mm x 1.7mm 1 Quote Link to comment Share on other sites More sharing options...
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