Has anyone installed an S4 rear knuckle/spindle? Is it a direct swap?

[drewgold]

Debating swapping out the rear knuckle/spindle. It's such a pain pressing out the rear wheel bearing on the A4's, wondering if the rear knuckle/spindle from an S4 that has the separate bearing assembly could be directly swapped with the A4 spindle? Worth the effort?

It appears based on part #'s that the rear axle, control arms and tie rods are all the same, as well as the ABS sensor so seems that it should be a direct swap?

Anyone tried this?

[Osher67]

http://www.audizine.com/forum/showth...aring-housings

You will need b7 rear brakes or s4.


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[drewgold]

http://www.audizine.com/forum/showth...aring-housings

You will need b7 rear brakes or s4.


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Thanks for the link! The vehicle in question is a B7 so sounds like it’s a direct swap. Will have to give doing this some serious thought. Guessing my bearings don’t have all that much life left in them at over 200k kms.

[Osher67]

Thanks for the link! The vehicle in question is a B7 so sounds like it’s a direct swap. Will have to give doing this some serious thought. Guessing my bearings don’t have all that much life left in them at over 200k kms.

It's probably a good guess lol. I got some b6 s4 spindles for my a4 with s4 brakes. my a4 ones were leaking grease out of both bearings with 130k miles.
One thing I was looking into was the quality of the replacement bearings. Seams skf is the original bearing supplier, so I made sure I got them over the others (there's lots of cheeper options or good ones I've heard like Timkin) was kind of my reassurance that they will last long.

note: I don't know at the time don't know if you know or not but, when I did my front wheel bearings I set my car down without tightening the axles and that's a big no no. (Can mess up the bearing) So make sure you tighten the wheel hub bolt before putting back on the ground.


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[drewgold]

It's probably a good guess lol. I got some b6 s4 spindles for my a4 with s4 brakes. my a4 ones were leaking grease out of both bearings with 130k miles.
One thing I was looking into was the quality of the replacement bearings. Seams skf is the original bearing supplier, so I made sure I got them over the others (there's lots of cheeper options or good ones I've heard like Timkin) was kind of my reassurance that they will last long.

note: I don't know at the time don't know if you know or not but, when I did my front wheel bearings I set my car down without tightening the axles and that's a big no no. (Can mess up the bearing) So make sure you tighten the wheel hub bolt before putting back on the ground.


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Yes, I'm told that SKF is the OE supplier for B7 bearings.

And thanks for the tip for the axle bolt!