Page 463 - 2021 Sierra Catalog

Figure
# Description
Gearcase 50-75 HP 3
1 Gear Housing
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
43
44
45
46
47
Dowel Pin
Shift Shaft
E-Clip
O-Ring
Shift Shaft Bushing
Seal
Washer
Reverse Lock Base
Reverse Lock Cam
Stud
Stud
Pinion Nut
Pinion Gear
Roller Bearing
Sleeve
Shim Set
Tapered Bearing
Drive Shaft
Spring
Pin
Gasket
O-Ring
Seal
Seal
Water Pump Base
Pin, Dowel
Gasket
Face Plate
Key
Gasket
Impeller
Insert
Water Pump body
Nylon Washer
Seal
Slinger
Washer
Nut
Trim Tab
Screw
Support Plate
Exhaust Tube Seal
Drain Screw
Drain Screw Gasket
Flush Plug
Part # O.E.M. #
Cyl 1979-2003
— 1643-9539A1
—
—
18-4295
18-7153
18-2155
18-2054
18-2316
—
—
—
—
—
—
—
—
—
—
—
—
—
18-2841
18-7115
18-2055
18-2011
18-3424
—
18-2823
18-3107
—
18-2824
18-3007
18-3115
18-3118
—
—
—
18-4275
—
18-6011
—
—
18-0539
18-2244
18-2945
—
17-85500
76163A1
53-29641
25-25439
23-77631A2
26-816461
12-77674
78036
433081
16-33778
16-57933
11-55910
43-98097
31-62091
88181
15-92881A1
31-77420A1
45-981801
24-20254
17-30545
27-19552
25-26722
26-79831
26-90562
46-77177A1
17-35973
27-19553
54705
28-56662
27-19551
47-89983
48753
46-77822A1
12-38453
26-38452
25-20273
12-29245
11-13438
31640A1
10-66024
92815
37721
10-79953
12-19183
19-48750
Qty.
1
2
1
1
1
1
1
1
1
1
3
2
1
1
1
1
AR
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
3
1
1
1
1
2
2
1
Figure #
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
Nut
Nut
Washer
Washer
Description
Flush Plug Washer
Shift Cam
Shim Set
Tapered Roller Bearing
Roller Bearing
Forward Gear
Cam Follower
Slide
Spring
Cross Pin
Clutch
Spring
Prop Shaft
Reverse Gear
Thrust Washer
Shim Set
Ball Bearing
O-Ring
Bearing Carrier
Key
Roller Bearing
Seal
Tab Washer
Cover Nut
Thrust Hub
Thrust Hub
Tab Washer
Nut
Gear Housing Seal Kit
Water Pump Repair Kit
Part #
18-2948
18-2361
—
—
—
—
—
18-1162
18-1096
—
—
—
—
—
—
—
—
—
—
—
18-1190
18-7160
—
—
—
18-2051, 18-2052
—
—
18-4233
18-3204
18-3204
18-3702
18-2654
18-3324
O.E.M. #
12-492211
11-34933
1134863
12-65791
12-45175
76039
15-38374A1
31-38356A1
31-21739
43-55608A4
38441
20843
24-38114
17-38113
52-92911
24-39845
44-75365
43-79158
12-32004
15-20927A1
30-20839T
2531986
69386A1
28-30281
3121700
26-69188, 26-619189
14-53012
11-87763
73345A1
14-76281
14-76281
11-69578A
26-79831A1
46-77177A3
Qty.
1
1
1
1
1
1
AR
1
1
1
1
1
1
1
1
1
1
1
1
AR
1
1
1
1
1
1
1
1
1
1
1
1
1
1
AR As required
445
OUTBOARD — MERCURY/MARINER - Gearcase Assembly