Sierra Marine Parts Catalog: Piston Rings
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Piston Rings are available individually
Model / HP
Cyl.
Bore size
Piston
OEM Part #
Piston Ring
OEM Part #
OEM Part #
Circlips
OEM Part #
9.9/15
2
2.188 / std.
—
397487
386279
N/A
—
325262
9.9/15
2
2.218 / .030
—
396574
386280
N/A
—
325262
9.9/15
2
2.188 / std.
387660
386279
N/A
—
325262
9.9/15
2
2.218 / .030
387661
386280
N/A
—
325262
25-35
2
3.000 / std.
392621
396377
320954
317831
25-35
2
3.020 / .020
N/A
396378
320954
317831
25-35
2
3.030 / .030
—
396576
396379
320954
317831
35-60
2 & 3
3.187 / std.
—
391798
391170, 434107
322188
317831
35-60
2 & 3
3.207 / .020
N/A
N/A
322188
317831
35-60
2 & 3
3.217 / .030
396581
391416, 434109
322188
317831
60-75
3
3.000 / std.
387284
396377
320954
317831
60-75
3
3.020 / .020
387285
396378
320954
317831
60-75
3
3.030 / .030
396583
396379
320954
317831
50-70
3
3.187 / std.
394461
391170, 434107
322188
317831
50-70
3
3.217 / .030
398483
391416, 434109
322188
317831
SIERRA PISTON KIT CONTENTS
( SEE APPLICATION CHARTS FOR SPECIFIC APPLICATIONS )
SIERRA V-4/V-6 PISTON KIT CONTENTS
( SEE APPLICATION CHARTS FOR SPECIFIC APPLICATIONS )
Bore
Piston
Wrist
OEM
OEM
Model/HP
Cyl.
Size
Piston
OEM Part #
Ring
OEM Part #
Pin
Part #
Circlips
Part #
APPLICATION CHART CONTINUED ON NEXT PAGE
85-300
4 & 6
3.500
393271, 393924
394930
327861
317831
85-300
4 & 6
3.520
—
396503, 385662
327861
317831
85-300
4 & 6
3.530
396585, 396588
396504
327861
317831
150-235
4 & 6
3.625
392455
390509
327861
317831
150-235
4 & 6
3.645
N/A
—
N/A
327861
317831
150-235
4 & 6
3.655
396587
390510
327861
317831
Loopers
120-300
4 & 6
3.685 (port)
432072, 432969
431870
N.S.S.
—
326765
120-300
4 & 6
3.685 (starboard)
432073, 432970
431870
N.S.S.
—
326765
120-300
4 & 6
3.715 (port)
432077, 433003
—
431844
N.S.S.
—
326765
120-300
4 & 6
3.715 (starboard)
432078, 433004
—
431844
N.S.S.
—
326765
120-300
4 & 6
3.500 (port)
393566
394930
327861
317831
120-300
4 & 6
3.500 (starboard)
—
391481
394930
327861
317831
120-300
4 & 6
3.520 (port)
N/A
396503, 385662
327861
317831
120-300
4 & 6
3.520 (starboard)
N/A
396503, 385662
327861
317831
120-300
4 & 6
3.530 (port)
393612
396504
327861
317831
120-300
4 & 6
3.530 (starboard)
391653
396504
327861
317831
185,
standard
200-225
6
3.5995 (port)
436860
436254
—
—
—
—
185,
standard
200-225
6
3.5995 (starboard)
436859
436254
—
—
—
—
185,
.020
200-225
6
3.5995 (port)
439015
—
439538
—
—
—
—
185,
.020
200-225
6
3.5995 (starboard)
439516
—
439538
—
—
—
—
STD.
STD
.020 OS
.030 OS
STD
.020 OS
.030 OS
HP
YEAR
CYL
BORE
PISTON
PISTON
PISTON
RINGS
RINGS
RINGS
5/6/8
1986-95
2
1.937
—
—
—
—
9.9/15
1974-80
2
2.188
—
—
9.9/15
1981-93
2
2.188
—
—
—
—
10
1988-90
2
2.188
—
—
—
—
14
1988-90
2
2.188
—
—
—
—
15 4-Stroke
1995-UP
2
2.188
—
—
—
—
18 Jet
1995-98
2
3.000
—
20
1981-99
2
3.000
—
25
1977-80
2
3.000
—
—
—
25
1981-96
2
3.000
—
25
1983-93
2
3.187
—
28
1986-96
2
3.000
—
INLINE PISTON & RINGS APPLICATION
OUTBOARD—JOHNSON/EVINRUDE(OMC/BRP)-InternalEngineSystem