Toronado.org

Thought it was my diff cover leaking gear oil. Turns out it is the seal where the splined shaft enters the diff.

Anyone know of a source for these? I am not having any luck so far. This is on a 66, not sure if other years are compatible.

Rockauto.com has them:

NATIONAL Part # 470380V More Information About this Part Oil Seal; Fluoroelastomer Seal, Shaft Size=1.5", Housing Bore=2.375, Outer Diameter=2.378, Width=0.312in
GMC THM425 3 Spd. Automatic Transaxle

$9.27 a piece.

Twilight Fenrir wrote:Rockauto.com has them:

NATIONAL Part # 470380V More Information About this Part Oil Seal; Fluoroelastomer Seal, Shaft Size=1.5", Housing Bore=2.375, Outer Diameter=2.378, Width=0.312in
GMC THM425 3 Spd. Automatic Transaxle

$9.27 a piece.

Thanks for the response. I notice I wasn't very clear in my question. The leak is where the drivers side cv-shaft enters the diff. I this still the correct seal.

Should be... It's the output shaft oil seal... that's what you're talking about to the best of my knowledge. I guess terminology isn't my strong suit, but I'm 80% sure that's the right one....

IIRC, you'll need either the appropriate tool, or a conveniently sized piece of pipe to get it seated propely. But, that's knowledge from my Fiero, I don't know if it translates to the Toronado.

Thanks Twilight Fenrir.

I replaced both of these seals in my car. I removed them carefully - carefully with respect to the housing, not the seals - and used a standard seal tool obtained cheaply at Harbor Freight to install them.

I cannot remember where I got the seals but I think it was at one of my local shops; Oreilly's, Autozone or NAPA. Might have been from an online source; it is possible I ordered them from Applied GMC - http://www.appliedcgmc.com - which is a supplier of parts for the GMC motorhome that was based on the Unified Power Package from the Toronado.