Page 363 - 2021 Sierra Catalog

Figure
# Description
Gearcase 50-75 HP 3
1 Housing Gearcase
2
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
21
21
22
23
24
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
Cup & Plate Assembly
Key, Impeller
Seal, Impeller Housing
Impeller
Cup & Plate Assembly
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
— 438050 1
—
—
—
18-3369
18-7137
18-0110
18-2378
18-7145
—
18-7120
—
—
18-6024
—
—
18-2061
18-2062
—
—
18-7130
18-2229
18-2230
18-2231
18-0200
18-1365
see app chart
see app chart
18-1117
18-3719
18-3346
18-3299
18-7963
18-3059
18-3346
18-7158
18-3130
18-2703
—
18-3136
18-2704
—
18-1501
18-1502
18-3765
—
324407
324408
435482
302325
318372
324670
318544
333572
324852
307853
320741
321123
393023
327640
313715
329922
329923
316534
438963
314728
323362
323361
314745
327656
387665
435755
435756
387817
314730
330380
331107
331353
397131
330379
310585
395040
314008
321159
323626
320943
389455
160084
911962
331880
323946
1
1
1
6
1
1
2
2
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
18-3762
18-0199
18-1370
NSS
18-2216
18-1714
18-2399
18-2187
NSS
18-1366
18-0195
—
—
18-7133
18-1351
—
18-2377
18-7109
18-1158
18-2002
18-4223
—
18-4231
18-3708-1
18-3741
18-2623
18-3392
18-2706
—
18-2557
18-7158
18-3135
18-7158
O.E.M. #
328825
322941
334163
322938
327669
389042
435020
337774
313448
324369
395209
910994
382408
314731
321174
321171
305123
382407
397094
316563
317178
387247
320862
333592
various
320570
398042
306394
396353
434421
321008
321122
324701
310585
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
345
OUTBOARD — JOHNSON/EVINRUDE (OMC/BRP) - Gearcase V-6 (Typical)