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Sierra Marine Parts Catalog: OMC Sterndrive Cobra

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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
18-2671
18-2673
N/A
18-2674
165
1972
18-2663
18-2666
18-2668
N/A
2.5
1982-86
18-2664
18-2667
18-2670
N/A
165
1973-76
18-2663
18-2667
18-2669
N/A
2.5
1986
18-2671
18-2673
N/A
18-2674
170
1974
18-2663
18-2667
18-2669
N/A
3
1982-86
18-2664
18-2667
18-2670
N/A
175
1975-77
18-2663
18-2667
18-2669
N/A
3
185
1986-91
18-2671
18-2667
18-2670
N/A
1968
18-2663
18-2666
18-2668
N/A
4.3
1985-86
18-2665
18-2667
18-2670
N/A
185
1978-80
18-2665
18-2667
18-2670
N/A
4.3
1986-91
18-2672
18-2673
N/A
18-2674
190
1974-77
18-2663
18-2667
18-2669
N/A
3.8
1981-86
18-2665
18-2667
18-2670
N/A
200
1968
18-2663
18-2666
18-2668
N/A
5
1982-86
18-2665
18-2667
18-2670
N/A
200
1979-81
18-2665
18-2667
18-2670
N/A
5
210
1986-91
18-2672
18-2673
N/A
18-2674
1968-70
18-2663
18-2666
18-2668
N/A
5.7
1982-86
18-2665
18-2667
18-2670
N/A
215
1971
18-2663
18-2666
18-2668
N/A
5.7
1986-89
18-2672
18-2673
N/A
18-2674
225
1972
18-2663
18-2666
18-2668
N/A
5.7
1990-91
18-2672
18-2673
N/A
18-2674
225
1973-76
18-2663
18-2667
18-2669
N/A
5.8
1989-90
18-2672
18-2673
N/A
18-2674
225
1978
18-2665
18-2667
18-2670
N/A
7.5
230
1987
--
18-2673
N/A
18-2674
1979-81
18-2665
18-2667
18-2670
N/A
80
1969
18-2663
18-2666
18-2668
N/A
235
1971
18-2663
18-2666
18-2668
N/A
90
1970
18-2663
18-2666
18-2668
N/A
235
1975-77
18-2663
18-2667
18-2669
N/A
100
1972
18-2663
18-2666
18-2668
N/A
240
1978
18-2665
18-2667
18-2670
N/A
100
1973
18-2663
18-2667
18-2669
N/A
245
1972
18-2663
18-2666
18-2668
N/A
120
245
1968-72
18-2663
18-2666
18-2668
N/A
1973-75
18-2663
18-2667
18-2669
N/A
120
250
1973-77
18-2663
18-2667
18-2669
N/A
1979
18-2665
18-2667
18-2670
N/A
120
1978-81
18-2664
18-2667
18-2670
N/A
260
1979-81
18-2665
18-2667
18-2670
N/A
140
1973-77
18-2663
18-2667
18-2669
N/A
262
1989
18-2672
18-2673
N/A
18-2674
140
350
1978-81
18-2664
18-2667
18-2670
N/A
1988-89
18-2672
18-2673
N/A
18-2674
155
1968-72
18-2663
18-2666
18-2668
N/A
460
1988-89
--
18-2673
N/A
18-2674
Except Cobra
Cobra
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
18-2034
324639
0.437
0.937
0.188
18-0542
321831
0.750
1.253
0.186
18-2035
327031
0.425
0.875
0.313
18-0543
321895
1.540
1.926
0.243
18-2058
313353
1.938
2.438
0.250
18-0559
332585
0.285
0.357
0.940
18-2059
321466
0.750
1.126
0.200
18-2000
309989
1.375
2.000
0.313
18-2060
321467
1.000
1.375
0.250
18-2001
330137
1.125
1.624
0.250
18-2061
329922
0.822
1.375
0.195
18-2002
320862
1.188
1.692
0.250
18-2062
329923
0.875
1.375
0.207
18-2005
313284
0.625
1.128
0.250
18-2063
330327
0.625
1.124
0.188
18-2012
310599
1.000
1.499
0.250
18-2064
332205
0.730
1.130
0.194
18-2016
313992
1.187
1.875
0.250
18-2065
332261
0.625
1.375
0.195
18-2018
305987
1.000
1.375
0.250
18-2066
911019
1.000
1.375
0.435
18-2020
310649
2.500
3.000
0.250
18-2067
911685
2.000
2.509
0.315
18-2021
302564
0.750
1.375
0.250
18-2068
911701
0.500
0.905
0.250
18-2022
303345
0.554
1.000
0.375
18-2068
915702
0.500
0.905
0.250
18-2023
313282
0.554
1.062
0.312
18-2068
916058
0.500
0.905
0.250
18-2024
314167
0.425
0.937
0.312
18-2068
3853655
0.500
0.905
0.200
18-2025
318972
0.500
0.875
0.250
18-2071
981195
1.500
2.125
0.250
18-2026
321453
0.875
1.250
0.188
18-2072
981196
1.750
2.502
0.250
18-2027
321459
0.625
1.125
0.250
18-2073
981268
1.625
2.502
0.250
18-2028
321480
0.500
1.250
0.188
18-2074
322575
1.625
2.125
0.250
18-2029
321481
0.687
1.250
0.250
18-2074
339620
1.625
2.125
0.250
18-2030
321786
0.625
1.125
0.188
18-2075
332942
1.562
2.062
0.300
18-2031
321787
0.625
1.125
0.312
18-8349
911795,
1.375
2.186
0.500
18-2032
321788
0.500
1.000
0.188
806
3852548
18-2033
321928
0.625
1.375
0.250