150S; 150S-B; 150SR; 150SR-B Transmissions Drive 150S-A, 150S-B, 150SR-A,150SR-B, Complete 150S, 150S-B, 150SR, 150SR-B Parts on group Drive 150S-A, 150S-B, 150SR-A,150SR-B, Complete: Pos. Part No Qty Parts name Comments 1. 3819865 [1] Sail drive Ratio 2.19:1 2. 888326 [1] Gear housing Ratio 2.19:1 2. 3. 889670 [1] Gear housing Ratio 2.19:1 3. Parts catalog : Upper Gear Unit Sail Boat Drive Unit 150S-A, 150SR-A, 150S-B, 150SR-B 150S, 150S-B, 150SR, 150SR-B Upper Gear Unit Sail Boat Drive Unit 150S, 150SR, Components 150S, 150S-B, 150SR, 150SR-B Lower Gear Unit Sail Boat Drive Unit 150S, 150SR 150S, 150S-B, 150SR, 150SR-B Folding Propeller, 2-blade 150S, 150S-B, 150SR, 150SR-B Folding Propeller 3-blade 150S, 150S-B, 150SR, 150SR-B Folding Propeller 4-blade 150S, 150S-B, 150SR, 150SR-B