KAD42P-A; KAMD42P-A; HS1A Transmissions Duoprop Drive Unit: RATIO 1.68:1 Parts on group Duoprop Drive Unit: RATIO 1.68:1: Pos. Part No Qty Parts name Comments 1. 3868638 [1] Drive (3868021), ( 872989) 2. 873310 [1] Gear 3. 7734180_096 Intermediate housing 4. 872990 [1] Gear 5. See group 64 6. 876266 [1] Gasket kit, upper gear See group 99 6. 876639 [1] Gasket kit, Lower gear See group 99 Parts catalog : Duoprop Drive Unit: RATIO 1.59:1 Transom Shield Exhaust and Cooling Water Pipe Hydraulic Pump and Trim Instrument Flywheel Housing and Primary Shaft Hydraulic Cylinders and Ground Cable Kit Duoprop Drive Unit: RATIO 1.78:1 Upper Gear Unit Intermediate Housing Lower Gear Unit: RATIO 1.59:1 Lower Gear Unit: RATIO 1.68:1 Lower Gear Unit: RATIO 1.78:1