MD2010A; MD2020A; MD2030A; MD2040A; MS2B-R; MS2A-D; MS2A-E; MS2L-D; MS2L-E; 120S-D; 120S-E; MD2010; MD2030; MD2040; MD2020 Transmissions Connecting Components for 120S-D: A MD2010A, MD2020A Parts on group Connecting Components for 120S-D: A: Pos. Part No Qty Parts name Comments 1. 873076 [1] Drive Ratio 2.5:1 2. 3. 873089 [1] Gear 3. 4. 965185 [6] Flange screw 5. 943369 [1] Rubber hose Intake-sea water pump., L=1000mm 6. 961666 [2] Hose clamp 7. 861378 [1] Engine bed Parts catalog : Connecting Components for 120S-D: B MD2030A Connecting Components for 120S-D: C MD2040A Connecting Components for 120S-D: A MD2010A, MD2020A Connecting Components for 120S-D: B MD2030A Connecting Components for 120S-D: C MD2040A Reverse Gear: RATIO 2.4:1 MS2A-D