Sierra Marine Parts Catalog

431 OUTBOARD — MERCURY/MARINER - Gearcase Assembly Figure # Description Part # O.E.M. # Qty. Figure # Description Part # O.E.M. # Qty. 1 Gear Housing ~ 1647-9148A65 1 2 Water Insert (Starboard) ~ 66885 1 Water Insert (Port) ~ 66884 1 3 Screw 18-3197 10-76156 1 4 Drain Screw 18-2375 22-67892A1 1 5 Washer 18-2945 12-19183 2 6 Nut 18-2344 11-45812 1 7 Dowel Pin ~ 17-43044 2 8 Vent Screw 18-2244 10-79953 1 9 Stud ~ 16-78638 1 10 Stud ~ 16-56297 1 11 Stud ~ 16-30667 2 12 Stud ~ 16-579201 2 13 Roller Bearing ~ 31-35934A1 1 14 Pinion Gear ~ 43-780811 1 15 Pinion Nut 18-3719 11-35921 1 16 Speedometer Tube ~ 22-85822A10 1 17 Shift Shaft ~ 78902 2 1 18 E-Clip 18-4295 53-29641 1 19 O-Ring 18-7153 25-25439 1 20 Shift Shaft Bushing 18-2155 23-77631A2 1 21 Seal 18-2054 26-816461 1 22 Rubber Washer 18-2316 12-77674 1 23 Sleeve ~ 23-98621 1 24 Shim Assembly 18-2295 15-57007A1 AR 25 Roller Bearing ~ 31-53079A1 1 26 Roller Bearing ~ 31-53079A1 1 27 Drive Shaft Assembly ~ 45-98682A1 1 28 Spring ~ 24-34576 1 29 Pin ~ 17-30545 1 30 Gasket 18-2826 27-856101 1 31 O-Ring 18-7162 25-33145 1 32 Seal 18-2014 26-89238 1 33 Seal 18-2013 26-16977 1 34 Water Pump Base 18-3416 46-96146A6 1 35 Gasket 18-2914 27-856081 1 36 Face Plate 18-3117 32435 1 37 Gasket 18-2915 27-856091 1 38 Key ~ 28-56654 1 39 Impeller 18-3017 47-899842 1 40 Insert 18-3114 48752 1 41 Water Pump Body 18-3116 43-96148A1 1 42 Washer 18-4275 12-29245 3 43 Nut 18-3722 11-20361 2 44 Seal 18-3110 26-38970 1 45 Guide Sleeve 18-3109 23-29804 1 46 Washer 18-4270 12-36001 1 47 Nut 18-3722 11-45592 1 48 Slinger 18-7426 25-30271 1 49 Washer 18-4275 12-29245 3 50 Screw ~ 10-96411 1 51 Trim Tab 18-6011 3164A1 1 52 Screw ~ 10-66024 1 53 Shift Cam ~ 78956 1 54 Nut 18-3721 11-34933 1 55 Washer ~ 12-45176 2 56 Screw ~ 10-65210 1 57 Cam Follower ~ 89594A1 1 58 Actuator Rod ~ 79911 1 1 59 Locating Pin ~ 17-78906 1 60 Spring ~ 24-749910 2 61 Washer ~ 12-78910 1 62 Shim Assembly 18-2285 15-47397A1 AR 63 Bearing 18-1166 31-78172A1 1 64 Forward Gear ~ 43-78082A3 1 65 Roller Bearing 18-1122 31-73363 2 66 Clutch ~ 52-823174 1 67 Detent Pin ~ 17-78909 2 68 Cross Pin ~ 17-78905 1 69 Retaining Spring ~ 24-78962 2 70 Prop Shaft 18-2239 44-94148 1 71 Reverse Gear ~ 43-85462 1 72 Thrust Ring ~ 68100 1 1 73 Ball Bearing 18-1155 30-88957 1 74 O-Ring 18-7159 25-31534 1 75 Bearing Carrier 18-1567 43567T1 1 76 Key ~ 28-30281 1 77 Roller Bearing 18-1158 31-30956 1 78 Seal (Inner) 18-2002 26-76868 1 79 Seal (Outer) 18-2053 26-70081 1 80 Tab Washer 18-2299 14-79447 1 81 Cover Nut 18-3751 79448 1 82 Thrust Hub 18-4220 13171 1 83 Spline Washer 18-3714 12-31211A2 1 84 Tab Washer 18-3200 14-31210 1 85 Prop Nut 18-3700 11-52707 1 AR As required