Page 361 - 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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Shift Rod (long)
Shift Rod (x-long)
Cover, Shift Rod
Screw, Cover
O-Ring, Shift Rod
Gasket, Shift Housing
Magnetic Drain Screw
O-Rings, Plugs
Screw
O-Ring
Screw,Gearcase to housing
Screen,Water intake
Anode
Trim Tab
Screw,Trim tab
Oil Seal, Upper
Oil Seal, Lower
Screw,Housing to gearcase
Bearing Housing
O-Ring Bearing Housing
Shim .003
Shim .004
Shim .005
Thrust Washer, Pinion
Thrust Bearing, Pinion
Drive Shaft (long)
Drive Shaft (x-long)
Bearing, Pinion
Nut, Pinion
Wear Plate
Key, Impeller
Seal, Impeller Housing
Impeller
Cup, Impeller
O-Ring, Drive Shaft
Housing, Water Pump
Grommet, Water Tube
Pump cover
Screw,Impeller housing
Grommet
Bearing Housing Assembly
Ball, Detent
Spring, Detent
Pin, Housing
Detent, Shifter
Part # O.E.M. # Qty.
Cyl 1979-2003
— 431642 1
—
—
—
18-3369
18-7137
18-0110
18-2378
18-7145
—
18-7475
—
—
18-6024
—
—
18-2061
18-2062
—
—
18-7130
18-2229
18-2230
18-2231
18-0200
18-1365
—
—
18-1357
18-3719
18-3346
18-3299
18-7963
18-3059
18-3346
18-2769
18-3130
18-2703
—
—
18-2704
—
—
—
18-3765
—
332120
332121
388618
302325
318372
324670
318544
333572
324852
332584
331999
323466
393023
327640
313715
329922
329923
317624
397493
314728
323362
323361
314745
327656
387656
394613
394614
384195
314730
330380
331107
331353
395864
330379
332000
395040
314008
321159
328715
320943
391365
327345
326666
331880
323946
1
1
1
6
1
1
1
1
1
1
5
1
1
1
1
1
1
4
1
1
AR
AR
AR
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
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
68
69
70
71
72
73
74
75
76
77
78
79
O-Ring
Description
Pin, Shift Lever
Shift Shaft
Cradler, Shifter
Shift Lever
Thrust Washer, Forwardd Gear
Thrust Bearing, Forward Gear
Gear Set, Forward & Pinion
Sliding Clutch
Pin, Clutch Dog
Retaining Spring
Propeller Shaft
Gear, Reverse
Thrust Bearing, Reverse Gear
Thrust Washer, Reverse Gear
Retainer Plate/Bearing Housing
Retaining Rings
O-Ring , Bearing Housing
Carrier Bearing (Fore)
Bearing Housing
Screw, Retainer
Roller Bearing (Aft)
Oil Seals, Prop Shaft
Thrust Washer
Propeller
Spacer, Prop Nut
Nut, Propeller
Cotter Pin, Prop Nut
Gear Housing Seal Kit
Water Pump Repair Kit (w/housing)
Grommet
Spacer,Shift rod
Gasket,Impeller housing plate
O-Ring, Drive Shaft
Screw,Cover to impeller
O-Ring,Driveshaft to crankcase
Part #
—
18-3763
18-3766
—
18-0198
18-1371
18-2218
18-2220
18-1714
18-2399
18-2252
18-2219
18-1366
18-0195
—
—
18-7127
18-1351
—
18-2377
18-7475
18-1350
18-2001
18-4222
—
18-4228
18-3705
18-3742
18-2623
18-3392
18-2706
—
18-2557
—
18-3135
18-7158
O.E.M. #
320145
322941
334163
324037
324766
385043
398035
323664
313448
324369
387818
333077
382408
314731
314732
313445
313446
382407
397087
316563
332583
379504
330137
318841
Various
315810
314503
314502
396354
395062
321008
321122
324701
302035
306643
310585
Qty.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
4
1
1
2
1
1
1
1
1
1
1
1
1
1
1
2
1
AR As required
343
OUTBOARD — JOHNSON/EVINRUDE (OMC/BRP) - Crossflow Gearcase V-4 1978-1998