AQ131A; AQ131B; AQ131C; AQ131D Transmissions Drive Unit Parts on group Drive Unit: Pos. Part No Qty Parts name Comments 1. 854019 [1] Drive 2. 854022 [1] Upper gear 2. 3803114 [1] Upper gear, exch 3. 7744650_045 interm housing 4. 854039 [1] Lower gear 4. 875192 [1] Gasket kit See group 10A Parts catalog : Drive Unit Lower Gear Unit Intermediate Housing Upper Gear Unit Lower Gear Unit Intermediate Housing: DRIVE 275A Upper Gear Unit Intermediate Housing Lower Gear Unit Upper Gear Unit Intermediate Housing Lower Gear Unit