Transfer case o -ring

[steelwheels]

I have the "Holy grail" adapator off a '91 4l80e/np205 drive train and need the rubber o-ring for it....does anyone know of a source for these?... My local Gm dealer cant get it(doesnt know what im looking for waste of my time) and of course parts houses cant either....is there another adapator that has the same o -ring diameter that would fit?....thanks in advance!
steve

 

[Deuling]

O- ring in a bottle

 

[Blue85]

If you know the right size, you can order almost anything. You might check with local transmission and drivetrain shops. What you need is more rare, but I have found gaskets for adapters at these places when no parts store stocks them. Is it a square cross-section or round?

 

[sweetk30]

should be same oring as 2wd tail housing has on it to seal to the case.

thats all i have done.

any local tranny shop should also have a lot of them around.

and i have 1 of those adaptors also .

 

[steelwheels]

4l80e/np205 adpator

It is round

 

[dyeager535]

Screw the dealers. Most parts counters are lazy, haven't been much for brand loyalty in my experience.

Anyways, try this: http://gmpartswiki.com/query
Query string: 52r
Book type: Parts Catalogs
Single Book: September 1990 parts and illustration 52R.

Looks like scans of individual pages, not the whole thing, but MAYBE you could try 4L80E or adapter, or trans, t-case, something under querry to find a page relating to that o-ring.

My other idea is to call some hydraulic shops around you, and if they don't have a large stock of o-rings, they can probably tell you where they got them, who will. There are also plenty of online catalogs of o-rings, diameter and cross-section are what are needed to ID the right one. Word of caution here, it appears that some fuel injectors use a "non-standard" o-ring, so it's not as easy to find, although there are companies that also list the "non-standard" o-ring profiles.