Page 359 - 2021 Sierra Catalog

Figure
# Description
Gearcase 50-75 HP 3
1 Housing Gearcase
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Trim Tab
Bolt, Trim Tab
O-Rings, Drain Plugs
Drain Fill Plug, Upper
Magnetic Drain Screw
Seal
Bolt, Pinion Retaining
Bolt, Housing
Lockwasher
Bolt, Long Gearcase
Bolt, Anode
Lockwasher
Bolt, Short Gearcase
Anode, Cavitation
Seal, Exhaust
Screen, Water Inlet
Gasket, Shiftshaft Housing
O-Rings, Shiftshaft
Shiftshaft Housing
Bolt, Shiftshaft Housing
Shiftshaft
Slinger, Shift Arm
Nut, Propeller
Cotter Pin, Prop Nut
Spacer, Prop Nut
Thrust Washer
Outer Seal, Carrier
Inner Seal, Carrier
Carrier Bearing (Aft)
Carrier Assembly
Anode, Carrier
Seal
Bolt, Carrier to Retainer
Bolt, Carrier Anode
Carrier Bearing (Fore)
O-Ring , Bearing Housing
Retaining Rings
Retaining Plate, Carrier
Large Thrust Washer, Reverse Gear
Thrust Bearing, Reverse Gear
Gear, Reverse
Small Thrust Washer, Reverse Gear
Part # O.E.M. # Qty.
Cyl 1979-2003
— 392478 1
—
—
18-7145
18-2387
18-2378
18-7475
—
—
—
—
—
—
—
18-6024
18-2537
—
18-2855
18-7137
—
18-3133
—
18-2706
18-3705
18-3742
18-4228
18-4222
18-8326
18-2001
18-1350
—
—
18-7475
18-2379
—
18-1351
18-7127
—
—
18-0193
18-1366
18-2208
—
318544
313715
333572
307551
318544
332584
324852
308843
306314
313697
328096
306470
306503
436745
324937
314175
314082
318372
388651
302325
327337
321008
314503
314502
315810
127084, 318841
330137
342787
379504
434391
306470
332584
320041
127466
382407
313446
313445
313453
313447
382408
318304
316484
1
1
2
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
4
4
2
1
1
2
1
1
1
1
1
Figure #
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
66
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
Description
Propshaft
Retaining Spring
Clutch Sliding
Pin, Clutch Dog
Gear Set, Forward & Pinion
Thrust Bearing, Forward Gear
Thrust Washer, Forward Gear
Shaft, Shifter
Cradle, Shifter
Lever, Shift
Bearing, Housing
Bearing Housing Assy.
Detent Shift
Detent Ball
Detent Spring
Pin, Shifter Housing
Pin, Housing
Nut, Pinion
Gear, Pinion
Bearing, Pinion
Driveshaft(std)
Bearing, Thrust
Washer, Thrust
Shim (.003)
Shim (.004)
Shim (.005)
O-Ring Bearing Housing
Driveshaft Retaining Housing
Bolt, Driveshaft Retaining
Seal
Gasket, Water Pump
Plate, Impeller
Seal, Water Pump Housing
Impeller
Key, Impeller
Liner, Water Pump Housing
Liner, Top Plate
Housing, Water Pump
Bolt, Water Pump Housing
Seal, Guide tube
Guide, Water Tube
Grommet
Screw, Guide Tube
Gear Housing Seal Kit
Water Pump Repair Kit, Complete
Part #
18-2250
18-2399
18-2209
18-1714
—
18-1371
18-0198
—
18-3766
—
NSS
—
—
—
—
—
18-3765
—
NSS
18-1356
—
—
18-1367
18-2232
18-2233
18-2234
18-7128
—
—
18-8325
18-2709
18-3127
18-7481
18-3053-1
18-3138
—
18-3126
18-3129
18-3133
18-2703
—
18-2705
18-3153
18-2660
18-3389
O.E.M. #
439185, 439131
324369
318303
313448
397338
385043
324766
326668
334163
324037
NSS
391365
326670
327345
911961
320145
331880
313339
NSS
382343
437376
317230
385068
323889
323890
317232
313754
385087
909386
342786
336530
341038
324981
396725
334897
321940
324980
435673
302325
314008
319276
342786
908158
396349
432955
Qty.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
AR
AR
AR
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
AR As required NSS Not Sold Seperate
341
OUTBOARD — JOHNSON/EVINRUDE (OMC/BRP) - Gearcase 50-75 HP 3 Cyl 1979-2003