AD30A; AQAD30A; MD30A; TAMD30A; TMD30A; AD30; AQAD30; MD30; TAMD30; TMD30 Transmissions Duoprop Drive Unit: DP290 Parts on group Duoprop Drive Unit: DP290: Pos. Part No Qty Parts name Comments 1. 852922 [1] Drive Exchange parts., Ratio2,30:1 1. 853453 [1] Drive Exchange parts., Ratio2,30:1 2. 851340 [1] Upper gear 3. 7744050_064 interm housing 4. 852408 [1] Lower gear Exchange parts. 4. 875741 [1] Gasket kit See group 10A Parts catalog : Duoprop Drive Unit: DP280 Aquamatc Drive Unit: B Aquamatc Drive Unit: A Reverse Gear MS3C: 852503 MD30A, TAMD30A, TMD30A Reverse Gear MS3C: 852502 MD30A, TAMD30A, TMD30A Reverse Gear MS3C: 852501 MD30A, TAMD30A, TMD30A Upper Gear Unit AQ Drive Unit 280 Upper Gear Unit AQ Drive Unit 290 Intermediate Housing AQ Drive Unit 280 Intermediate Housing AQ Drive Unit 290 Lower Gear Unit AQ Drive Unit 280 Lower Gear Unit AQ Drive Unit 290