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Sierra Marine Parts Catalog: Mercruiser

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PISTON/ RING APPLICATION
PISTONS
RINGS
Qty.
Liter
Model
Note
CID
# Cyl Stroke
Year
Serial Number
Std.
0.02
0.03
Note
Std.
0.02
0.03
Eng.
1.6L
100 VASER
98
4
4
2007-2010
W995000 & UP
-
-
-
-
-
-
2.5L
120
153
4
4
1964-1986
1666601 - B531853
18-4180
-
-
-
-
-
2.5L
2.5L
153
4
4
1987-1989
B531854 - C853255
18-4180
-
-
-
-
-
3.0L
140
181
4
4
1968-1986
2508261 - B450800
18-4161
18-4160
18-4191
18-3937
18-3939
18-3938
4
3.0L
140
4
3332138 - 5157668
18-4161
18-4160
18-4191
18-3937
18-3939
18-3938
4
3.0L
140
4
5157669 - 6229717
18-4161
18-4160
18-4191
18-3937
18-3939
18-3938
4
3.0L
140 / 3.0L
4
6229718 - C856558
18-4161
18-4160
18-4191
18-3937
18-3939
18-3938
4
3.0L
3.0L
181
4
4
1987-1989
B450801 - C856558
18-4161
18-4160
-
-
-
-
3.0L
3.0L
181
4
4
1990-1994
C856559 - F603999
-
-
-
18-3937
18-3939
18-3938
6
3.0L
3.0L
181
4
4
1998-2010
L010042 & UP
-
-
-
-
-
-
3.0L
3.0L MPI
181
4
4
2008-2010
A072812 & UP
-
-
-
-
-
-
3.0L
3.0LX
181
4
4
1990-1997
C856559 - K999999
-
-
-
-
-
-
3.7L
165 / 3.7L
224
4
4
1987-1989
B434941 - C762299
-
-
(11)
18-4134
-
-
-
3.7L
170
224
4
4
1985-1986
6916779 - B434940
18-4109
18-4118
18-4134
18-3928
18-3929
-
4
3.7L
180 / 3.7LX
224
4
4
1987-1989
B436391 - C762299
18-4109
-
(11)
18-4134
-
-
-
3.7L
190 / 3.7L
224
4
4
1985-1986
6916779 - B436390
18-4109
-
(11)
18-4134
-
-
-
3.7L
470
224
4
4
1976-1984
4208730 - 6916779
18-4109
18-4118
18-4134
18-3928
18-3929
-
4
3.7L
485
224
4
4
1980-1982
5685394 - 6218036
18-4109
-
(11)
18-4134
-
-
-
3.7L
488
224
4
4
1983-1984
6170297 - 6916778
18-4109
-
(11)
18-4134
-
-
-
150
4
1666495 - 2048046
18-4180
18-4183
-
18-3942
-
-
6
4.1L
160
250
6
4
1987-1989
2048022 - 2770031
-
-
-
18-3942
-
-
4.1L
165
250
6
4
1970-1981
2770032 - 5813433
-
-
-
18-3942
-
-
4.3L
175 / 4.3L
4
B527955 - & Up
18-4173
18-4188
18-4164
18-3937
18-3939
18-3938
6
3.8L
185
2bbl
4
1983-1984
6330183 - 6919655
-
-
-
18-3944
-
-
4.3L
175 / 4.3L
262
6
4
1987-1992
B527955 - D714106
-
-
-
-
-
-
4.3L
185
2bbl
262
6
4
1985-1986
A331455 - B527954
-
-
18-4164
18-3937
18-3939
-
4.3L
205 / 4.3LX
262
6
4
1985-1986
A331455 - B527954
-
-
18-4164
18-3937
18-3939
18-3938
4.3L
262 MAG EFI GEN +
262
6
4
1987-1991
B527955 - D714369
18-4173
-
-
-
-
-
4.3L
262 MAG EFI GEN +
262
6
4
1996-1997
F803800 - K999999
-
-
-
-
-
-
4.3L
4.3L GEN II
262
6
4
1992-1996
D714107 - F802999
18-4173
18-4188
-
-
-
18-3938
6
4.3L
4.3L GEN +
262
6
4
1998-2010
L010044 & UP
-
-
-
-
-
-
4.3L
4.3L EFI GEN +
262
6
4
1998-2001
L012009 - M299999
-
-
-
-
-
-
4.3L
4.3L MPI
262
6
4
2002-2010
M322761 & UP
-
-
-
-
-
-
4.3L
4.3LH GEN +
262
6
4
1998-2002
L010044 - M614999
-
-
-
-
-
-
4.3L
4.3LX GEN II
262
6
4
1992-1996
D7141370 - F802999
-
-
18-4164
18-3937
18-3939
18-3938
6
4.3L
4.3LX GEN +
262
6
4
1996-1997
F803000 - K999999
-
-
-
-
-
-
4.3L
4.3LXH GEN +
262
6
4
1996-1997
F803114 - K999999
-
-
-
-
-
-
4.9L
215
FORD
302
8
4
1970-1972
2781153 - 3395720
-
-
-
18-3937
18-3939
18-3938
8
4.9L
215
FORD
4
1973-1974
3385721 - 4166999
-
-
-
18-3937
18-3939
18-3938
8
225
GM
4
1536920 - & Up
-
-
-
18-3937
18-3939
18-3938
8
4.6L
190
GM
283
8
4
1963-1964
1564539 - 1730903
18-4180
18-4183
-
18-3942
-
-
6
5.0L
198 MIE
305
8
4
1977
4776402 - 4931099
-
-
-
-
-
-
5.0L
200
305
8
4
1985-1987
6899058 - B525981
-
-
-
-
-
-
5.0L
200 / 5.0L
GM
305
8
4
1987
B525982 - B774444
-
-
18-4178
18-3944
-
-
8
200
GM
4
6218462 - & Up
-
-
-
18-3944
-
-
8
5.0L
228
GM
305
8
4
1977-1984
4765100 - 6899268
-
-
-
18-3944
-
-
8
5.0L
228 MIE
305
8
4
1977-1980
5170009 - 5907057
-
-
-
-
-
-
5.0L
230
305
8
4
1985-1987
6899269 - B525981
-
-
-
-
-
-
5.0L
230
305
8
4
1987-1995
B525982 - B773739
-
-
18-4178
18-3944
-
-
8
5.0L
230 MIE
GM
305
8
4
1981-1987
5907058 - B522505
-
-
-
18-3944
-
-
8
5.0L
230 MIE
305
8
4
1987
B522506 - B788151
-
18-4530
18-4178
18-3944
-
-
8
5.0L
230 GM
8
4
6218462 - & Up
-
-
-
18-3944
-
-
8
5.0L
5.0L
305
8
4
1988-1995
B774445 - F600999
-
-
-
-
-
-
5.0L
5.0L GEN +
305
8
4
1998-2010
L015751 & UP
-
-
-
-
-
-
5.0L
5.0L EFI GEN +
305
8
4
1998-2001
L012052 - M299999
-
-
-
-
-
-
5.0L
5.0L MIE
305
8
4
1988
B788152 - C396832
-
-
-
-
-
-
5.0L
5.0L MPI
305
8
4
2002-2010
M300000 & UP
-
-
-
-
-
-
5.0L
5.0LX
305
8
4
1988-1995
B773740 - F600999
-
-
-
-
-
-
5.0L
898 / 198
GM
305
8
4
1977-1984
4762210 - 6899057
-
-
-
18-3944
-
-
8
5.4L
225 MCM / 225 MIE
GM
327
8
4
1963-1969
1539620 - 2694014
-
-
-
-
-
-
5.4L
250 MCM - 250 MIE
GM
327
8
4
1968-1969
2314301 - 2639854
-
-
-
18-3937
18-3939
18-3938
8
250
GM
350
8
4
1977
4768000 - 4908849
18-4173
18-4188
18-4164
18-3937
18-3939
18-3938
8
5.7L
5.7L
255
GM
350
8
4
1975-1976
4175500 - 4767999
18-4173
18-4188
18-4164
18-3937
18-3939
18-3938
8
5.7L
255 MIE
GM
350
8
4
1975-1980
4175500 - 5907057
18-4173
-
-
-
-
-
8
5.7L
260
GM
350
8
4
1978-1987
4908850 - B773304
18-4173
18-4188
18-4164
18-3937
18-3939
18-3938
8
5.7L
260 MIE
GM
350
8
4
1981-1987
5907058 - B788151
18-4173
18-4188
18-4164
18-3937
18-3939
18-3938
8
5.7L
260 / 5.7L
GM
350
8
4
B525982 - & Up
18-4173
18-4188
18-4164
18-3937
18-3939
18-3938
8
5.7L
270 MCM / 270 MIE
350
8
4
1969-1972
2851074 - 3077735
-
-
-
18-3937
18-3939
19-3938
8
5.7L
280
350
8
4
1975-1976
4176250 - 4770199
-
-
-
-
-
-
8
5.7L
300
350
8
4
1985-1988
6668677 - B430367
-
-
-
18-3937
18-3939
18-3938
8
5.7L
320 EFI
350
8
4
1987-1989
A543604 - C622418
-
-
-
18-3937
18-3939
18-3938
8
5.7L
320 GM EFI BRAVO
8
4
B157603 - & Up
-
-
-
18-3937
18-3939
18-3938
8
325
GM
4
2278747 - & Up
-
-
-
18-3940
18-3950
18-3941
8
330
GM
4
4623115 - & Up
-
18-4189
-
18-3940
18-3950
18-3941
8
330 W/B.W.
GM
4
6083145 - & Up
-
18-4189
-
18-3940
18-3950
18-3941
8
5.7L
350 MAG ALPHA
350
8
4
1986-1997
A635178 - K999999
18-4173
18-4188
18-4164
18-3937
18-3939
18-3938
8
5.7L
350 MAG ALPHA EFI GEN +
350
8
4
1996-1997
F800300 - K999999
-
-
-
-
-
-
8
5.7L
350 MAG BRAVO MPI
350
8
4
1995
F415189 - F601999
18-4173
-
18-4164
-
-
-
8
5.7L
350 MAG BRAVO MPI GEN +
350
8
4
1996-1997
F602000 - K999999
-
-
-
-
-
-
8
5.7L
350 MAG SKI
350
8
4
1994-1996
F215561 - F820706
18-4173
-
18-4164
-
-
-
8
(1)
Cast Aluminum (Use with GM Engine Code 1XW)
(7) Flat Head
(2)
Cast aluminum (Use with GM Engine Code 4XW)
(8) Forged Aluminum, Recessed Head
(3)
Forged Aluminum (Use with GM Engine Code 3UB)
(9) Starboard
(4)
Cast Aluminum (Use with GM Engine Code 4XX)
(10) Port
(5)
Cast Aluminum (Use with GM Engine Code 2XY)
(11) .010 (25mm)Oversize
(6)
Cast Aluminum (Use with GM Engine Code 4XY)
N.L.A.
No longer available from O.E. source
677