Evinrude Gearcase Exploded View Diagram and Parts Fits 50-75 HP 3-Cyl 1979-2003
| Figure # | Description | O.E.M. # | Sierra # | Qty. |
| * | Gearcase Assembly, Complete | | | |
| * | Housing, Gearcase | 392478 | | 1 |
| 1 | Screw, Guide Tube | 908158 | 18-3153 2 | 1 |
| 2 | Guide, Water Tube | 319276 | 18-3112 2 | 1 |
| 3 | Seal, Guide tube | 314008 | 18-2703 2 | 1 |
| 4 | Housing, Water Pump | 435673 | 18-3129 2 | 1 |
| 5a | Liner, Water Pump Housing | 321940 | 18-3128 2 | 1 |
| 5b | Liner Top Plate | 324980 | 18-3126 2 | 1 |
| 6 | Impeller | 396725 | 18-3053 2 | 1 |
| 7 | Key, Impeller | 334897 | 18-3138 2 | 1 |
| 8 | Bolt, Water Pump Housing | 302325 | 18-3133 2 | 4 |
| 9 | Grommet | 342786 | 18-2705 2 | 1 |
| 10 | Seal, Water Pump Housing | 324981 | 18-7481 1 2 | 1 |
| 11 | Plate, Impeller | 341038 | 18-3127 2 | 1 |
| 12 | Gasket, Water Pump | 336530 | 18-2709 2 | 1 |
| 13 | Bolt, Driveshaft Retaining Housing | 909386 | | 4 |
| 14 | Driveshaft Retaining Housing | 385087 | | 1 |
| 15 | Seal | 342786 | 18-8325 1 | 1 |
| 16 | O-Ring Bearing Housing | 313754 | 18-7128 1 | 1 |
| 17a | Shim (.003) | 323889 | 18-2232 | AR |
| 17b | Shim (.004) | 323890 | 18-2233 | AR |
| 17c | Shim (.005) | 317232 | 18-2234 | AR |
| 18 | Washer, Thrust | 317230 | 18-0194 | 1 |
| 19 | Bearing, Thrust | 385068 | 18-1367 | 1 |
| * | O-Ring, Driveshaft (not pictured) | 310585 | 18-7158 2 | 1 |
| 20 | Driveshaft (std) | 437376 | | 1 |
| 21 | Slinger, Shift Arm | 321452 | 18-2706 | 1 |
| 22 | Shiftshaft | 327337 | | 1 |
| 23 | Bolt, Shiftshaft Housing | 302325 | 18-3133 | 4 |
| 24 | Shiftshaft Housing | 388651 | | 1 |
| 25 | O-ring, Shiftshaft | 318372 | 18-7137 | 1 |
| 26 | Gasket, Shiftshaft Housing | 314082 | 18-2855 | 1 |
| 27 | Nut, Pinion | 313339 | | 1 |
| 28 | Gear, Pinion | NSS | NSS | |
| 29 | Bearing, Pinion | 382343 | 18-1356 | 1 |
| 30 | Screen, Water Inlet | 314175 | | 1 |
| 31 | Seal, Exhaust | 324937 | 18-2537 | 1 |
| 32 | Anode, Cavitation | 436745 | 18-6024 | 1 |
| 33 | Trim Tab | 318544 | | 1 |
| 34 | Bolt, Trim Tab | 313715 | | 1 |
| 35 | Lockwasher | 306470 | | 1 |
| 36 | Bolt, Short Gearcase | 306503 | | 1 |
| 37 | Bolt, Anode | 3280960 | 18-4823 | 1 |
| 38 | Lockwasher | 306314 | | 1 |
| 39 | Bolt, Long Gearcase | 313697 | | 1 |
| 40 | O-Rings, Drain Plugs | 311598 | 18-7145 1 | 2 |
| 41 | Drain Fill Plug, Upper | 307551 | 18-2387 | 1 |
| 42 | Seal | 332584 | 1 | 1 |
| 43 | Bolt, Pinion Retaining | 324852 | | 1 |
| 44 | Bolt, Housing | 308843 | | 4 |
| 45 | Magnetic Drain Screw | 318544 | 18-2378 | 1 |
| 46 | Pin, Bearing Housing | 331880 | 18-3765 | 1 |
| 47 | Pin, Shifter Housing | 320145 | | 1 |
| 48 | Bearing Housing Assy. | 391365 | | 1 |
| 49 | Bearing, Housing | NSS | | NSS |
| 50 | Detent, Shift | 326670 | | 1 |
| 51 | Detent, Ball | 327345 | | 1 |
| 52 | Detent, Spring | 911961 | | 1 |
| 53 | Lever, Shift | 324037 | | 1 |
| 54 | Cradle, Shifter | 334163 | 18-3766 | 1 |
| 55 | Shaft, Shifter | 326668 | | 1 |
| 56 | Thrust Washer, Forward Gear | 324766 | 18-0198 | 1 |
| 57 | Thrust Bearing, Forward Gear | 385043 | 18-1371 | 1 |
| 58 | Gear Set, Forward & Pinion | 397338 | 18-2207 | 1 |
| 59 | Clutch, Sliding | 318303 | 18-2209 | 1 |
| 60 | Spring, Sliding Clutch | 324369 | 18-2399 | 1 |
| 61 | Pin, Sliding Clutch | 313448 | 18-1714 | 1 |
| 62 | Propshaft | 439185, 439131 | 18-2250 | 1 |
| 63 | Small Thrust Washer, Reverse Gear | 316484 | | 1 |
| 64 | Gear, Reverse | 318304 | 18-2208 | 1 |
| 65 | Thrust Bearing, Reverse Gear | 382408 | 18-1366 | 1 |
| 66 | Large Thrust Washer, Reverse Gear | 313447 | 18-0193 | 1 |
| 67 | Retaining Plate, Carrier | 313453 | | 1 |
| 68 | Retaining Rings | 313445 | | 2 |
| 69 | O-Ring , Bearing Housing | 313446 | 18-7127 1 | 1 |
| 70 | Carrier Bearing (Fore) | 382407 | 18-1351 | 1 |
| 71 | Carrier Assembly | 434391 | | 1 |
| 72 | Bolt, Carrier Anode | 127466 | | 2 |
| 73 | Anode, Carrier | 306470 | | 1 |
| 74 | Seal | 332584 | 18-7475 1 | 4 |
| 75 | Bolt, Carrier to Retainer | 320041 | 18-2379 | 4 |
| 76 | Carrier Bearing (Aft) | 379504 | 18-1350 | 1 |
| 77a | Outer Seal, Carrier | 330137 | 18-8326 1 | 1 |
| 77b | Inner Seal, Carrier | 342787 | 18-2001 1 | 1 |
| 78 | Thrust Washer | 127084, 318841 | 18-4222 | 1 |
| 79 | Spacer, Prop Nut | 315810 | 18-4228 | 1 |
| 80 | Nut, Propeller | 314503 | 18-3705 | 1 |
| 81 | Cotter Pin, Prop Nut | 314502 | 18-3742 | 1 |
| 82 | Gear Housing Seal Kit | 396349 | 18-2660 | 1 |
| 83 | Water Pump Repair Kit, Complete | 432955 | 18-3389 | 1 |
| 1 | Contents of Gear Housing Seal Kit 18-2660 | | 2 | Contents of Water Pump Kit 18-3389 | | AR | As required |
No Review for Oil Seal for Johnson/Evinrude 342786, GLM 86013 - Sierra
No Review for Clutch Dog Pin - Sierra
No Review for O-Ring for Johnson/Evinrude 313754, OMC Sterndrive/Cobra, GLM 81340 - Sierra
No Review for Reverse Gear for Johnson/Evinrude 318304, GLM 22672 - Sierra
No Review for Grommet for Johnson/Evinrude 314008, GLM 86490 - Sierra
No Review for Lower Unit Gearcase O-Ring - Sierra
No Review for Lower Unit Carrier Screw for Johnson/Evinrude 320041 - Sierra
No Review for Propeller Castle Nut - Sierra (Package of 5)
No Review for Grommet for Johnson/Evinrude 321008, GLM 86500 - Sierra
No Review for Housing Pin for Johnson/Evinrude 331880 - Sierra
No Review for Stainless Steel Bolts for Johnson/Evinrude 331979, GLM 22360 22323 - Sierra
No Review for Anode for Johnson/Evinrude, OMC Sterndrive/Cobra 393023 436745, GLM 12776 - Sierra
No Review for Shift Cradle - Sierra
No Review for Propeller Shaft for Johnson/Evinrude 387879 - Sierra
No Review for Propeller Cotter Pin - Sierra
No Review for Water Pump Impeller Housing Rubber Seal for Johnson/Evinrude 324981, GLM 86570 - Sierra
No Review for Water Pump Impeller Plate for Johnson/Evinrude 319275, GLM 12550 - Sierra
No Review for .005 Shim for Johnson/Evinrude 317232 - Sierra
No Review for Water Pump Impeller Key for Johnson/Evinrude 334897, GLM 89592 - Sierra
No Review for Clutch Dog Spring for Johnson/Evinrude 324369, OMC Sterndrive/Cobra, GLM 11052 - Sierra
No Review for Water Pump Wear Plate Gasket for Johnson/Evinrude 336530, GLM 33150 - Sierra
No Review for Water Pump Impeller Wear Plate for Johnson/Evinrude 321940, GLM 12560 - Sierra
No Review for Sliding Clutch for Johnson/Evinrude 318303, GLM 22673 - Sierra
No Review for O-Ring - Sierra
No Review for Stainless Steel Bolts for Johnson/Evinrude 908158, GLM 22320 - Sierra
No Review for Fore Carrier/Pinion Gear Bearing - Sierra
No Review for Exhaust Leg Rubber Seal for Johnson/Evinrude 324937, GLM 86210 - Sierra
No Review for Oil Seal - Sierra
No Review for Aft Carrier/Forward Gear Thrust Bearings - Sierra
No Review for Shift Housing Cover to Gearcase Gasket for Johnson/Evinrude 314082, GLM 33420 - Sierra
No Review for .004 Shim for Johnson/Evinrude 323890 - Sierra
No Review for Oil Seal for Johnson/Evinrude 342787 - Sierra
No Review for Drive Shaft Thrust Washer for Johnson/Evinrude 317230, GLM 21643 - Sierra
No Review for O-Ring for Johnson/Evinrude, OMC Sterndrive/Cobra 318372, GLM 45200 - Sierra
No Review for O-Ring - Sierra
No Review for .003 Shim for Johnson/Evinrude 323889 - Sierra
No Review for Mallory O-Ring 9-76586
No Review for Mallory O-Ring 9-76571
No Review for Mallory O-Ring 9-76543
No Review for Mallory O-Ring 9-76532
No Review for Mallory O-Ring 9-76531
No Review for Mallory O-Ring 9-76527
No Review for Mallory O-ring 9-76500
No Review for Mallory Oil Seal 9-76217
No Review for Mallory Oil Seal 9-76212
No Review for Mallory Seal Kit, Gear Housing 9-74103
No Review for Mallory Nut, Prop 9-73903
No Review for Mallory Plug, Lower Unit Drain 9-72655
No Review for Mallory Plug, Lower Unit Drain (magnetic) 9-72654
No Review for Mallory Wear Plate Gasket 9-60409
No Review for Mallory Shift Housing Gasket 9-60404
No Review for Mallory Screw 9-48218
No Review for Mallory Grommet 9-48216
No Review for Mallory Grommet 9-48215
No Review for Mallory Lower Unit Carrier Screw 9-43813
No Review for Mallory O-Ring 9-43632
No Review for Mallory Oil Seal 9-43612
No Review for Mallory Guide, Water tube 9-43600
No Review for Mallory Wear Plate 9-43408
No Review for Mallory Housing, Water Pump 9-43208
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