Rear axle

Exch. final drive with differentail I=41:11=3,73 for M635 CSI up to 06/1987 and for M635 CSI from 06/1987 up, without cat, you need 1 for 1 car

Exchange final drive I=40:11=3,64 for 635 CSI with cat, from 06/1987 up, only for country version AUS, you need 1 for 1 car

Gasket set differential for M635 CSI up to 12/1987, you need 1 for 1 car

Gasket set differential Typ 188 for 628 CSI from 05/1982 up and for 635 CSI from 05/1982 up to 12/1983 and for 635 CSI from 05/1982 up to 09/1984 only for country version S, CH and for 635 CSI all years of manufacturing with cat only for country version AUS, you need 1 for 1 car