PontusJo

I used 525010L from a audi a3 on mine which had 525010S. As long as the haldex is from same generation I think they all gonna fit but there can be a small diffrent in the gearing.

Yes you have to drop the subframe about 10-12cm to get access to the rear mount bolts. I used my old ecu.

I changed the complete rear diff with haldex. Got a used one from a audi a3 and changed it myself within 2,5 hours.

After I changed the two wheelbearings back I have come to the whining sound must come from the rear diff. I wonder if they all fit from ex vw golf 7, Passat, tiguan, audi a3? If I search by chassinumber I get fewer used diffparts but if i type in my partnumber on the rear diff I get parts from passat, tiguan, a3, karoq and superb. Some with haldex gen 4 and some with gen 5. If a rear diff from ex passat fits with my haldex control unit I would save a lot of money. I hope you understand my bad english. Pontus