rear differential seal

**quattrodave** · 15 August 2015, 15:34

Thought I saw it on the audi.tr shop but sorry it was the wrong seal

**UrS4boy** · 15 August 2015, 15:40

Originally posted by andy j

Audi no longer sell rear differential shaft oil seal 017 525 400A. I found a rear differential seal on 034 motorsport site. The part number is 017 525 400C. Will this seal work instead? http://store.034motorsport.com/diffe...17525400c.html

Item 18

400A is for the rear diffs with the diff lock. It is NLA according to GVAP. (Item 18 in the diagram) 400C is for the EDL rear diffs in 1996 and 1997

Depends if you have a locking rear differential or not. The 017525400A has a larger opening than the 017525400C because the left rear diff flange has a larger effective shaft diameter than that of the EDL (non-locking rear diffs). So 400A is for the rear diffs with the diff lock. It is NLA according to GVAP. (Item 18 in the diagram) 400C is for the EDL rear diffs in 1995.5 (USA), 1996 and 1997. (previous discussion: http://forums.quattroworld.com/s4s6/msgs/227525.phtml)

017525400A

One Expensive source: http://www.ecstuning.com/ES266912/

One Inexpensive source: http://www.autohausaz.com/pn/017525400A

017525400C at 034:

**johnboy 3169** · 15 August 2015, 17:15

Rear Diff Seal

Hi

I ordered the rear diff seal last week from Audi Tradition part number 017525400A it is still available it arrived on Thursday this week.

I have just looked on AT website and it is still available 41.00 euros.

To save on postage maybe see if anyone is ordering anything from AT because there postage cost are expensive.

Good luck.

**andy j** · 15 August 2015, 18:56

My car has diff lock. So going of whats been said it will need to be seal 017525400A.

**johnboy 3169** · 15 August 2015, 21:12

My RS2 has the diff lock and you can still get hold of 017525400A from Audi Tradition although it appears that I could have bought one cheaper from autohausaz

Although not too sure about the quality.