Page 949 - 2021 Sierra Catalog

Figure #
Gear
1
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
31
31
Description Part # O.E.M. #
case 50-75 HP 3 Cyl 1979-2003
Upper Gear Housing, Basic
w/ Inserts ~ 984518
Gearcase Insert
Gearcase Insert
Gearcase Insert
Gearcase Insert
Gearcase Insert
Gearcase Insert
Shift Rod Guide
Gasket, Water Passage Cover
Water Passage Cover
Thrust Plate, Starboard
Shim, Thrust Plate, 0.015"
Thrust Plate, Port
Retainer Ring, Thrust Plate
Nut
Washer
Gasket, Outdrive Mounting
Gasket, Adapter to Gear Housing
O-Ring, Adapter, Large
O-Ring, Adapter, Small
Water Pump Shaft Seal
Adapter, Water Pump to Gear Housing
Screw
Gasket, Plate to Adapter
Plate, Water Pump
Impeller
Liner, Water Pump Cover
Seal, Water Pump Housing
Impeller Housing
Screw
Shim, Bearing Carrier 0.010
Shim, Bearing Carrier 0.001
Shim, Bearing Carrier 0.003
NSS
NSS
NSS
NSS
NSS
NSS
NSS
18-0884
18-4837
NSS
18-1713
NSS
NSS
18-3730
NSS
18-2918
18-0911
18-7407
18-7403
18-2068
18-4836
18-1598
18-2916
18-3121
18-3058
18-3145
18-2541
18-3206
NSS
18-0207
18-0209
18-0211
910935
911779, 3852541
910901
911858, 3852567
910901
910901
912137
911733
911734
911838, 3852562
911839, 3852563
911837, 3852561
910953
912920, 3852648
911833
911836, 915840
911698
911700
909316
911701, 915702, 916058, 3853655
911699
908668, 341013
911702
911703
983895, 777128
911844
911704
984744
912238
911668
911669, 911670, 611671, 911672, 911673, 911674, 911675, 911676, 911677
911669, 911670, 611671, 911672, 911673, 911674, 911675, 911676, 911677
Qty.
1
5
5
5
3
4
4
1
1
1
1
AR
1
4
6
6
1
1
1
1
1
1
6
1
1
1
1
1
1
3
AR
AR
AR
Figure #
32
33
34
35
36
37
38
38
38
39
40
41
41
41
41
41
41
42
43
44
45
45
45
46
47
48
48
48
48
49
50
51
52
53
54
55
56
57
58
59
60
61
Description
Pinion Nut
Nut Retainer
Pinion Washer
Pinion Bearing, Lower
Bearing Carrier, Pinion
Pinion Bearing, Upper
Gear Set, 21:16 (includes 38 & 45)
Gear Set, 21:18 (includes 38 & 45)
Gear Set, 21:19 (includes 38 & 45)
Retainer Ring, Pinion Housing
O-Ring, Gear Housing Cover
Shim, Gear Position, 0.003"
Shim, Gear Position, 0.005"
Shim, Gear Position, 0.007"
Shim, Gear Position, 0.010"
Shim, Gear Position, 0.012"
Shim, Gear Position, 0.015"
Bearing, U-Joint Shaft
Nut, Gear to U-Joint
Centering Cone
Gear Set, 21:16 (includes 38 & 45)
Gear Set, 21:18 (includes 38 & 45)
Gear Set, 21:19 (includes 38 & 45)
Bearing, Bearing Carrier
O-Ring, Bearing Carrier
Shim, Bearing Carrier, 0.003", Green
Shim, Bearing Carrier, 0.004", Tan
Shim, Bearing Carrier, 0.005", Blue
Shim, Bearing Carrier, 0.010", Brown
Gear Bearing Carrier
Seal, Bearing Carrier
U-Joint & Water Pump Shaft Assy
Stub & Water Pump Shaft
U-Joint Assy
Yoke Shaft
O-Ring, U-Joint Shaft
Gear Housing Cover
Oil Indicator
O-Ring, Oil Indicator
Screw, Gear Housing Cover
Cover, Water Pump Access
Screw, Water Pump Access Cover
Water Pump Repair Kit w/housing
Part #
18-3769
18-3610
NSS
18-1170
18-4828
18-1161
18-1600
18-1601
NSS
18-3768
18-7107
18-02062
18-02063
NSS
18-02065
18-02066
18-02067
18-1171
18-3770
18-4835
18-1600
18-1601
NSS
18-1172
18-7169
18-0227
18-0229
18-02060
18-02061
18-4838
18-2067
18-2338
18-6399
18-2104
18-2146
18-7153
18-4838
18-8369
18-7116
18-1599
18-4750
18-4749-9
18-3348
O.E.M. #
911753
911752
911697
983892
911750
983891
983825
983826
984012
911751
313175
911662
911663
911664
911665
911666
911667
983878
911937
912029
983825
983826
984012
983877
911686
911678
911679
911680
911681
911683
911685
983880
984264
912214
912212
911851, 3852565
911845, 986363
914488
303067
123018
983967
911859, 3852568
984461, 984744
Qty.
1
1
1
1
1
1
AR
AR
AR
1
1
AR
AR
AR
AR
AR
AR
1
1
1
AR
AR
AR
1
1
AR
AR
AR
AR
1
1
1
1
2
1
2
1
1
1
4
1
3
1
AR As required NSS Not Sold Seperate
931
I/O — OMC STERNDRIVE/COBRA - Upper Gear Housing