90CS Quattro V6-28L (AAH) Belt Maintenance Diagrams
Drive Belt: Application and ID
Identifying Belt Versions
Note:
Vehicle may have an updated belt tensioner installed as per Technical Service Bulletin number 139402 dated Aug. 1, 1994.
Ribbed belt drive version A
A1 not applicable to vehicles for USA and Canada
A2 - vehicles with A/C
Ribbed belt drive version B
B1 - not applicable to vehicles for USA and Canada
B2 - vehicles with A/C
Belt drive pulley identification
A - Crankshaft pulley for ribbed belt drive version A
B - Crankshaft pulley for ribbed belt drive version B