Sierra Marine Parts Catalog

823 I/O — MERCRUISER - #1-R Gear Housing Components AR As required NSS Not Sold Seperate Figure # Description Part # OEM # Qty. 1 Lower Gear Housing N/A 1623-5356A4 1 2 Water Tube Guide 18-3109 23-29804 1 3 Bush Water Pump Housing 18-3110 26-38970 1 4 O-Ring, Upper - Drive Shaft 18-7158 25-30613 1 5 Slinger 18-7426 25-30271 1 6 Stainless Steel Locknuts (5/16-24) 18-3723 11-45592 1 7 Stainless Steel Locknuts (1/4-28) 18-3722 11-20361, 11-35888 2 8 Washer 18-4275 12-29245 3 9 Screw 18-3226 10-30720 1 10 Washer, Water Pump Body 18-4270 12-36001 1 11 Upper Pump Housing 18-3116 46-96148A1 1 12 Insert Cup 18-3114 48752 1 13 Impeller 18-3017 47-89984 1 14 Drive Key N/A 28-56654 1 15 Gasket, Upper Water Pump to Wear Plate (upper) 18-2915 27-85609-1 1 16 Impeller Plate 18-3117 32435 1 17 Gasket, Upper Water Pump to Wear Plate (lower) 18-2914 27-85608-1 1 18 Dowel Pin 18-3227 17-35973 2 19 Water Pump Base 18-3417 46-57234A1 1 20 Oil Seal (upper) 18-2026 26-16977 1 21 Oil Seal (lower) 18-2014 26-89238 1 22 O-Ring (2.175 ID) & (2.1091 ID) 18-7176, 18-7196 25-90011 1 23 Gasket, Water Pump Base to Gear Housing 18-2826 27-85610-1 1 24 Pin, Driveshaft N/A 17-30545 1 25 Spring N/A 24-34576 1 26 Tapered Roller Bearing N/A 31-53079A1 1 27 Shim Kit, Drive Shaft Bearing 18-2295 15-57007A 1 28 Drive Shaft N/A 45-41939A1 1 29 Shift Shaft Washer 18-4267 12-29395 1 30 Washer, Rubber Shift Shaft Bushing 18-2340 12-31266 1 31 Oil Seal 26-89236 18-2009 1 32 Shift Bushing 18-2154 23-30617A2 1 33 O-Ring 18-7153 25-25439 1 34 Washer, Lower Shift Shaft Bushing N/A 12-27880 1 35 Retaining Clip, Shift Shaft 18-4295 53-29641 1 36 Stainless Steel Shift Shaft 18-2150 77481-1 1 37 Stud, Gear Housing to Drive Shaft Housing (1-31/32") N/A 16-56298 2 38 Stud, Water Pump to Gear Housing (3 - 3/8") N/A 16-562972 1 39 Stud, Gear Housing to Drive Shaft Housing (3 - 3/16") N/A 16-46911 1 40 Stud, Water Pump to Gear Housing (3 - 1/4") N/A 16-69501 2 Figure # Description Part # OEM # Qty. 41 Oil Passage Seal 18-2944 26-45577 1 42 Dowel Pin, Gear Housing to Drive Shaft Housing N/A 17-35973 2 43 Screw, Gear Housing to Drive Shaft Housing 18-2361 10-30206 1 44 Nut Gear Housing to Drive Shaft Housing N/A 11-82671015 2 45 Gasket, Gear Housing Drain Screw 18-2945 12-19183, 12-20260 1 46 Plug, Oil Fill/Drain 18-2244 10-79953A2 1 47 Insert, Water Pick (Stbd) N/A 66885 1 48 Insert, Water Pick (Port) N/A 66884 1 49 Screw Insert to Gear Housing 18-3197 10-76156 1 50 Nut, Insert Screw 18-2344 11-45812 1 51 Trim Tab 18-6011 31640A1 1 52 Screw, Trim Tab to Gear Housing 18-6245 10-32470 1 53 Needle Roller Bearing 18-1150 31-92366A1 1 54 Lower Unit Gear Set (pinion gear) 18-2200 23-96084A4 1 55 Pinion Nut 18-3719 11-35921 1 56 Shift Crank 18-2130 76865 1 57 Shift Spool Assembly 19755A2 18-2286 1 58 Shim Kit, Forward Gear Bearing 18-2285 15-47397A1 1 59 Tapered Roller Bearing 18-1159 31-35928A1 1 60 Needle Roller Bearing 18-1157 31-30895 1 61 Lower Unit Gear Set (Forward) 18-2200 23-96084A4 1 62 Spring, Retainer, Cross Pin 18-2348 24-30893 1 63 Sliding Clutch 18-2202 52-66063 1 64 Cross Pin, Clutch to Clutch Actuating Shaft 18-2348 17-30632 1 65 Propeller Shaft 18-2166 44-66060, 44-66060-3 1 66 Shim Kit, Thrust Ring to Gear Housing 18-2284 15-31535A1 1 67 Lower Unit Gear Set (reverse) 18-2200 43-96084A4 1 68 Thrust Ring, Bearing Carrier 18-3759 35915 1 69 Ball Bearing 18-1155 30-88957A1 1 70 O-Ring 18-7159 25-31534 1 71 Needle Roller Bearing 18-1158 31-30956 1 72 Bearing Carrier Assembly 18-2191 73020A14 1 73 Key, Locating - Bearing Carrier N/A 28-30281 1 74 Oil Seals 18-2002 26-76868 2 75 Tab Washer 18-2299 14-79447 1 76 Spanner Nut 18-3751 79448 1 77 Thrust Washer 18-4220 13171, 77987 1 78 Continuity Washer NSS 13-423511 1 79 Brass Castle Washer 18-3714 12-31211A2 1 80 Tab Washer 18-3200 14-31210, 14-816629 1 81 Prop Nut 18-3700 11-52707 1