Sierra Marine Parts Catalog: OMC Sterndrive Cobra
SEAL KIT APPLICATION
Lower
Upper
Intermediate
Transom
Lower
Upper
Intermediate
Transom
Gearcase
Gearcase
Housing
Mount
Gearcase
Gearcase
Housing
Mount
Model
Year
Seal Kit
Seal Kit
Seal Kit
Seal Kit
Model
Year
Seal Kit
Seal Kit
Seal Kit
Seal Kit
2.3
1987-90
N/A
165
1972
18-2668
N/A
2.5
1982-86
N/A
165
1973-76
N/A
➀
2.5
1986
N/A
170
1974
N/A
➁
3
1982-86
N/A
175
1975-77
N/A
➀
3
185
1986-91
N/A
1968
18-2668
N/A
➁
4.3
1985-86
N/A
185
1978-80
N/A
➀
4.3
1986-91
N/A
190
1974-77
N/A
➁
3.8
1981-86
N/A
200
1968
18-2668
N/A
5
1982-86
N/A
200
1979-81
N/A
➀
5
210
1986-91
N/A
1968-70
18-2668
N/A
➁
5.7
1982-86
N/A
215
1971
18-2668
N/A
➀
5.7
1986-89
N/A
225
1972
18-2668
N/A
➁
5.7
1990-91
N/A
225
1973-76
N/A
➂
5.8
1989-90
N/A
225
1978
N/A
7.5
230
1987
--
N/A
1979-81
N/A
80
1969
18-2668
N/A
235
1971
18-2668
N/A
90
1970
18-2668
N/A
235
1975-77
N/A
100
1972
18-2668
N/A
240
1978
N/A
100
1973
N/A
245
1972
18-2668
N/A
120
245
1968-72
18-2668
N/A
1973-75
N/A
120
250
1973-77
N/A
1979
N/A
120
1978-81
N/A
260
1979-81
N/A
140
1973-77
N/A
262
1989
N/A
140
350
1978-81
N/A
1988-89
N/A
155
1968-72
18-2668
N/A
460
1988-89
--
N/A
➀ Except Cobra
➁ Cobra
➂ Except L.E.
N/A Not Applicable
OIL SEALS
Shaft
Dimensions (in)
Shaft
Dimensions (in)
Part #
O.E. #
Size
O.D.
Width
Part #
O.E. #
Size
O.D.
Width
324639
0.437
0.937
0.188
321831
0.750
1.253
0.186
327031
0.425
0.875
0.313
321895
1.540
1.926
0.243
313353
1.938
2.438
0.250
332585
0.285
0.357
0.940
321466
0.750
1.126
0.200
309989
1.375
2.000
0.313
321467
1.000
1.375
0.250
330137
1.125
1.624
0.250
329922
0.822
1.375
0.195
320862
1.188
1.692
0.250
329923
0.875
1.375
0.207
313284
0.625
1.128
0.250
330327
0.625
1.124
0.188
310599
1.000
1.499
0.250
332205
0.730
1.130
0.194
313992
1.187
1.875
0.250
332261
0.625
1.375
0.195
305987
1.000
1.375
0.250
911019
1.000
1.375
0.435
310649
2.500
3.000
0.250
911685
2.000
2.509
0.315
302564
0.750
1.375
0.250
911701
0.500
0.905
0.250
303345
0.554
1.000
0.375
915702
0.500
0.905
0.250
313282
0.554
1.062
0.312
916058
0.500
0.905
0.250
314167
0.425
0.937
0.312
3853655
0.500
0.905
0.200
318972
0.500
0.875
0.250
981195
1.500
2.125
0.250
321453
0.875
1.250
0.188
981196
1.750
2.502
0.250
321459
0.625
1.125
0.250
981268
1.625
2.502
0.250
321480
0.500
1.250
0.188
322575
1.625
2.125
0.250
321481
0.687
1.250
0.250
339620
1.625
2.125
0.250
321786
0.625
1.125
0.188
332942
1.562
2.062
0.300
321787
0.625
1.125
0.312
911795,
1.375
2.186
0.500
321788
0.500
1.000
0.188
806
3852548
321928
0.625
1.375
0.250