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Old 04-19-2012, 01:13 PM   #1
legacy420
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Default A/C leak...part number for gasket or o ring?

Well, summer is coming up and thought I should fix my A/C. I've done a few charges to see how bad the leak was and it's holding a can of 134a for about a week and a half. Finally did a dye test this morning, and found the leak was coming from the top side of the compressor where the hard line goes to.

is this just an o ring or gasket or will i have to replace more?

Part numbers would help as well! Thanks so much, and please do add any information to make this fix legit. Thanks!

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Old 04-19-2012, 04:29 PM   #2
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Your dealer has part numbers, that's their job. Unless you want to save 9 cents by part number shopping this across 32 dealers on an o-ring whose full retail value is $2.12. To make it legit, you'll need to take it to a pro and have them suck, swap, then refill.
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Old 04-19-2012, 06:31 PM   #3
legacy420
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i have a pro ready to do the fill as he did the dye test (i supplied the can). He's just chargin a few bucks for labor. Got a part number from the dealer just now, thanks! Its just under two bucks...but i have to drive 43 miles to get it. Ack
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Old 04-20-2012, 09:06 PM   #4
awdtoy
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isn't it just an O-ring? Pull it out. Take to local store to match up.
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Old 04-21-2012, 02:21 PM   #5
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Pulling it out vents the system. Freon is expensive and I'm 99% sure its "illegal" to do it that way.
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Old 04-21-2012, 02:27 PM   #6
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Had the same symptoms as you, only holding pressure for a week or so. Did the dye test and found a dry rotted o-ring! Works beautifully now!
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Old 04-21-2012, 02:42 PM   #7
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technically if all the freon has already leaked out, he's not going to be discharging anything in the atmosphere if he takes it off to replace the o-ring.

amirite?
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Old 04-21-2012, 05:23 PM   #8
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Quote:
Originally Posted by z
technically if all the freon has already leaked out, he's not going to be discharging anything in the atmosphere if he takes it off to replace the o-ring.

amirite?
If he failed the pressure test, the yes that is correct.
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Old 04-24-2012, 09:19 AM   #9
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Quote:
Originally Posted by Unabomber View Post
Pulling it out vents the system. Freon is expensive and I'm 99% sure its "illegal" to do it that way.
Driving around with a leak is technically illegal, too, but who is issuing EPA citations for this?
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Old 04-24-2012, 02:31 PM   #10
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You are right, my cause was mainly having to pay for more freon as if you do a full service, they would suck the freon, swap out the oring, fill will freon and you'd be out the door for the normal $49.95 service fee rather than the $49.95 service fee + $25 for 1.2 lbs of freon or whatever it is.
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Old 05-02-2012, 03:36 PM   #11
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You can get R134a O-ring assortment kits at just about every auto parts store this time of year. they're green in color and there are about 4 different sizes. You won't be able to put the wrong sized one on there.
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Old 07-28-2012, 01:05 AM   #12
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sorry for bump...

trying to replace the high pressure hose - got a good shape used one with o rings. Also, to be cautious I got OEM o rings (P/N 73039AA030 or PT751093) but the OEM rings are WAY different in size. Well, different enough to make me suspicious. The ID seems too large, and the thickness too small.

guess I can try the sampler kit from AZ or oreilly/kragans.

halp...
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Old 08-01-2014, 09:22 PM   #13
SLOMatt
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For future reference here are the part numbers for the o-rings on the compressor side of the A/C hoses (for a 2002 WRX 5spd).

high side A/C hose o-ring: 73039FA100
low side A/C hose o-ring: 73039AA300

- Matt
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