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Sierra Marine Parts Catalog: OMC Sterndrive Cobra

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Figure
Figure
#
Description
Part #
O.E.M. #
Qty.
#
Description
Part #
O.E.M. #
Qty.
Gearcase 50-75 HP 3 Cyl 1979-2003
32
pinion Nut
18-3769
911753
1
1
Upper Gear Housing, Basic
33
Nut retainer
18-3610
911752
1
w/ Inserts
~
984518
1
34
pinion Washer
NSS
911697
1
2
Gearcase Insert
NSS
910935
5
35
pinion Bearing, Lower
18-1170
983892
1
3
Gearcase Insert
NSS
911779,
36
Bearing Carrier, pinion
18-4828
911750
1
3852541
5
37
pinion Bearing, Upper
18-1161
983891
1
4
Gearcase Insert
NSS
910901
5
38
Gear Set, 21:16
5
Gearcase Insert
NSS
911858,
(includes 38 & 45)
18-1600
983825
Ar
3852567
3
38
Gear Set, 21:18
6
Gearcase Insert
NSS
910901
4
(includes 38 & 45)
18-1601
983826
Ar
7
Gearcase Insert
NSS
910901
4
38
Gear Set, 21:19
8
Shift rod Guide
NSS
912137
1
(includes 38 & 45)
18-1602
984012
Ar
9
Gasket, Water passage Cover
18-0884
911733
1
39
retainer ring, pinion Housing
18-3768
911751
1
10
Water passage Cover
18-4837
911734
1
40
o-ring, Gear Housing Cover
18-7107
313175
1
11
Thrust plate, Starboard
NSS
911838,
41
Shim, Gear position, 0.003"
18-02062
911662
Ar
3852562
1
41
Shim, Gear position, 0.005"
18-02063
911663
Ar
12
Shim, Thrust plate, 0.015"
18-1713
911839,
41
Shim, Gear position, 0.007"
18-02064
911664
Ar
3852563
Ar
41
Shim, Gear position, 0.010"
18-02065
911665
Ar
13
Thrust plate, port
NSS
911837,
41
Shim, Gear position, 0.012"
18-02066
911666
Ar
3852561
1
41
Shim, Gear position, 0.015"
18-02067
911667
Ar
14
retainer ring, Thrust plate
NSS
910953
4
42
Bearing, U-Joint Shaft
18-1171
983878
1
15
Nut
18-3730
912920,
43
Nut, Gear to U-Joint
18-3770
911937
1
3852648
6
44
Centering Cone
18-4835
912029
1
16
Washer
NSS
911833
6
45
Gear Set, 21:16
17
Gasket, outdrive Mounting
18-2918
911836,
(includes 38 & 45)
18-1600
983825
Ar
915840
1
45
Gear Set, 21:18
18
Gasket, Adapter to Gear Housing
18-0911
911698
1
(includes 38 & 45)
18-1601
983826
Ar
19
o-ring, Adapter, Large
18-7407
911700
1
45
Gear Set, 21:19
20
o-ring, Adapter, Small
18-7403
909316
1
(includes 38 & 45)
18-1602
984012
Ar
21
Water pump Shaft Seal
18-2068
911701,
46
Bearing, Bearing Carrier
18-1172
983877
1
915702,
47
o-ring, Bearing Carrier
18-7169
911686
1
916058,
48
Shim, Bearing Carrier, 0.003",
3853655
1
Green
18-0227
911678
Ar
22
Adapter, Water pump to
48
Shim, Bearing Carrier, 0.004",
Gear Housing
18-4836
911699
1
Tan
18-0229
911679
Ar
23
Screw
18-1598
908668,
48
Shim, Bearing Carrier, 0.005",
341013
6
Blue
18-02060
911680
Ar
24
Gasket, plate to Adapter
18-2916
911702
1
48
Shim, Bearing Carrier, 0.010",
25
plate, Water pump
18-3121
911703
1
Brown
18-02061
911681
Ar
26
Impeller
18-3058
983895,
49
Gear Bearing Carrier
18-4838
911683
1
777128
1
50
Seal, Bearing Carrier
18-2067
911685
1
27
Liner, Water pump Cover
18-3145
911844
1
51
U-Joint & Water pump
28
Seal, Water pump Housing
18-2541
911704
1
Shaft Assy
18-2338
983880
1
29
Impeller Housing
18-3206
984744
1
52
Stub & Water pump Shaft
18-6399
984264
1
30
Screw
NSS
912238
3
53
U-Joint Assy
18-2104
912214
2
31
Shim, Bearing Carrier 0.010
18-0207
911668
Ar
54
Yoke Shaft
18-2146
912212
1
31
Shim, Bearing Carrier 0.001
18-0209
911669,
55
o-ring, U-Joint Shaft
18-7153
911851,
911670,
3852565
2
611671,
56
Gear Housing Cover
18-4838
911845,
911672,
986363
1
911673,
57
oil Indicator
18-8369
914488
1
911674,
58
o-ring, oil Indicator
18-7116
303067
1
911675,
59
Screw, Gear Housing Cover
18-1599
123018
4
911676,
60
Cover, Water pump Access
18-4750
983967
1
911677
Ar
61
Screw, Water pump
31
Shim, Bearing Carrier 0.003
18-0211
911669,
Access Cover
18-4749-9
911859,
911670,
3852568
3
611671,
Water pump repair Kit w/housing
18-3348
984461,
911672,
984744
1
911673,
911674,
911675,
911676,
911677
Ar
791
Ar
As required
NSS Not Sold Seperate