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Sierra Marine Parts Catalog: Mercruiser

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Figure
#
Description
Part #
O.E.M. #
Qty.
1
Upper Gear Housing
N/A
1547-9412A18
1
2
Screw, Top Cover
18-3231
10-98794
4
3
Top Cover
18-2381
94998A2
1
4
o-ring, Top Cover
18-7161
25-32546
1
5
Shim, Bearing Cup to Top Cover
18-2283
15-45691A1
1
6
Tapered roller Bearing
18-1165
31-61100A1
1
7
Upper Drive Shaft
18-2179
45-55796
1
8
o-ring, Upper Drive Shaft
18-7445
25-55801
1
9./10.
Upper Unit Gear Set
1.5:1
18-2201
43-18410A2, 46-18411A2
1
rebuild Kit
18-2256
43-803116T1
1
1.65:1
18-2203
43-45814A5
1
rebuild Kit
18-2257
43-803112T1
1
1.84:1
18-2204
43-75325A3
1
rebuild Kit
18-2258
43-803114T1
1
1.98:1
18-2205
43-55778A3
1
rebuild Kit
18-2259
43-803101T1
1
11
Tampered roller Bearing
18-1161
31-35990A1
1
12
Shim Kit, Bearing Cup to Drive Shaft Housing
18-2293
15-36178A1
1
13
oil Seal, Upper Drive Shaft Housing
18-2049
26-32511
1
14
oil Seal, Lower Drive Shaft Housing
18-2056
26-96503
1
15
Vent Screw
18-2244
10-79953A2
1
16
Gasket, Gear Housing Drain Screw
18-2945
12-19183, 12-20260
1
17
plug,Trim Tab Hole
18-3232
19-47579
1
18
Stud, Drive Shaft Housing
N/A
16-56295
2
19
Bushing, Drive Shaft Housing
18-3236
23-32632
1
20
Nut, Gear Housing Stud
18-2362
11-13439-1
3
21
Welch plug, Drive Shaft Housing
(7/8" oD)
18-4272
19-32652
1
(1 1/4" oD)
18-4273
19-42682
1
22
pipe plug, Water pocket
18-4265
22-428611
1
23
Nut, Drive Gear to U-Joint
18-3713
11-22339
1
24
Washer, Drive Gear to U-Joint Nut
18-3712
12-45810
1
25
Shim Kit Drive Gear
18-2292
15-35980A1
1
26
Bearing Kit
18-1160
31-35988A2, A12
1
27
Spacer (comes with kit)
18-1160
31-35988A2, A13
1
28
roller Bearing (comes with kit)
18-1160
31-35988A2, A13
1
29
oil Seal
18-2003
26-64893
1
30
Carrier Assembly oil Seal
18-0577
66081A2
1
31
o-ring
18-7169
25-70937
1
32
ring, roller Bearing retainer
18-4296
35983
1
33
reataining Nut Drive Shaft Housing
18-3752
816811-1
1
34
Yoke Assembly
18-2125
46020T
1
35
Heavy Duty U-Joint
18-2104
75832A2
1
36
Center Socket
18-2128
39383T
1
37
U-Joint Shaft Coupler
18-2146
59830A1
1
38
Drive Shaft
18-9218
59830A5
1
39
o-ring
18-7153
25-25439
2
40
Screw, Water pocket Cover to Drive Shaft Housing
18-3229
10-28668
4
41
Gasket, Water pocket Cover
18-0894
27-55810
1
42
Water pocket Cover (Sold as Assembly includes 40-44)
18-3219
42724A3
1
43
Bushing, Water pump Housing
18-3110
26-38970
1
44
Water Tube
18-3220
32-54236
1
Ar
As required
699