500; 500A; 501A Transmissions Connecting Components Reverse Gear MS4A, MS4B 501A Connecting Components, Drive SP-A, SP-A1, SP-A2, DP-A, DP-A1, 500A, 501A Drive Unit: SPA Drive Unit: SPA-1 Drive Unit: SPA-2 Duoprop Drive Unit Ratio 1, 95:1 Duoprop Drive Unit: 854021 Duoprop Drive Unit: 854642 Hydraulic Pump, Trim Instrument and Installation Components Intermediate Housing Intermediate Housing: DPA Intermediate Housing: DPA-1 Intermediate Housing: SPA Intermediate Housing: SPA-1 Intermediate Housing: SPA-2 Lower Gear Unit Lower Gear Unit Lower Gear Unit Lower Gear Unit Lower Gear Unit Reverse Gear MS4A: 853397 Reverse Gear MS4A: 853781 Reverse Gear MS4B: 854900 Reverse Gear MS4B: 854901 Upper Gear Unit Upper Gear Unit Upper Gear Unit Upper Gear Unit Upper Gear Unit Upper Gear Unit Parts catalog :
