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Old 12-30-2018, 12:14 PM   #1
B6T
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Which axle flanges when using 5-speed B5 A4/Passat FWD Transmission?

Hey guys,
I bought a FWD 5-speed from an Audi A4 for use in my Boxster. I thought the axles bolted right up, but to my surprise, the internet had led me astray in this regard, and they most certainly do not.

The Boxster has axles from a 1997 and the OD of the mating flange is about 102mm. The transmission has a flange diameter of approx 108mm (which agrees with what the internet says).

Obviously the diameters won't match up since the axle flange locates inside the transmission flange, but the bolt PCDs are definitely diffferent.

One would assume the Boxster therefore uses a different driveshaft flange smaller than 108mm.

Two questions:
1. Is this the case?
2. Does anyone have a spare set of Boxster driveshaft flanges they can sell me?
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Old 12-30-2018, 12:24 PM   #2
B6T
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So I kinda answered my own question...

Parts Diagram for Audi A4:
https://nemigaparts.com/cat_spares/etka/audi/a4/223u/409150/
Indicates M10x48 bolts for DS x Flange joints.

Parts Diagram for Porsche Boxster:
https://nemigaparts.com/cat_spares/pet/porsche/986/520u/501050/
Indicates M8x50 bolts for DS x Flange joints.

So who has a set they'd like to sell?
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Old 12-31-2018, 05:38 AM   #3
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Props to you for researching. Had no idea the 2 could be swapped for one another.
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