Sierra Marine Parts Catalog: Internal Engine, Pistons/Rings
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ALL PISTONS
ARE SUPPLIED COMPLETE WITH PISTON RINGS, WRIST PIN AND CIRCLIPS.
9.9
682
ALL
—
—
—
—
2
15C
684
ALL
—
—
—
—
2
30A
689
ALL
—
—
—
—
—
2
Ser #
Standard
.25mm
.50mm
Standard
.25mm
.50mm
Qty.
Model
Code
Ser #
Piston
Piston
Piston
Rings
Rings
Rings
Req’d
Model / HP
Cyl.
Bore size
Piston
OEM Part #
Piston Ring
OEM Part #
9.9 / 15
2
std
761-7982M, 761-7982T
39-15320M
48
2
std
761-8484M
—
—
Mariner (Japanese Models)
Sierra Piston Kit Contents (See Application Charts for SpeciFc Applications)
MARINER PISTON AND RINGS APPLICATION — JAPANESE MODELS
APPLICATION CONTINUED ON NEXT PAGE
3 Ring Pistons - Low Dome
35-140
2-6
2.875 / Std.
—
776-8600A9
➁
39-78816A12
40-52035
35-140
2-6
2.890 / .015
776-9095A1
➁
39-78811A12
40-52035
35-140
2-6
2.905 / .030
—
776-9096A1
39-88392A12
40-52035
2 Ring Pistons - Cross¡ow
40-50
4
2.565 / Std.
780-9229A7
39-18653A12
40-52035
40-50
4
2.580 / .015
780-9229A10
39-18653A1
40-52035
40-50
4
2.595 / .030
780-9229A11
39-18653A2
40-52035
50-60
3
2.875 / Std.
—
783-9613A1
39-19721A6
40-52035
50-60
3
2.890 / .015
783-9613A2
—
39-19721A1
40-52035
50-60
3
2.905 / .030
783-9613A3
—
39-19721A2
40-52035
70-115
3-4
3.375 / Std.
777-815965T4
39-96170A12
40-52035
70-115
3-4
3.390 / .015
777-815965A5
—
39-96170A3
40-52035
70-115
3-4
3.405 / .030
777-815965A6
—
39-96170A4
40-52035
75-125
3-4
3.375 / Std.
2704-826191T4
39-822321A12
40-52035
75-125
3-4
3.390 / .015
2704-821896A3
—
39-822321A1
40-52035
75-125
3-4
3.405 / .030
2704-821896A4
—
39-822321A2
40-52035
➀
3 ring high dome NLA, 2 ring piston are now substituted
➁
3 ring low dome NLA, 2 ring piston are now substituted
➂
Chart is for referencing only, pistons received will be 2 ring version
Beginning
Ending
Std. Cyl.
Std.
.015 O.S.
.030 O.S.
Std.
.015 O.S.
.030 O.S.
H.P.
Cyl.
Serial No.
Serial No.
Dia. (Bore)
Piston
Piston
Piston
Rings
Rings
Rings
3 RING INLINE PISTON AND RINGS APPLICATION - REFERENCE ONLY
➂
3.5
1
6202173
& UP
2
—
—
—
—
—
3.6
1
5404657
& UP
2
—
—
—
—
—
3.9
1
1655013
2498135
2
—
—
—
—
—
4 (1CYL)
1
2498136
A809600
2
—
—
—
—
—
4.5
1
4107220
& UP
2
—
—
—
—
—
7.5
2
2529895
& UP
2
—
—
—
—
—
9.8
2
1470349
& UP
2
—
—
—
—
—
20
2
1922910
5942040
2.562
—
—
—
—
—
25
2
1467499
149931
2.562
—
—
—
—
—
30 Jet (40 HP)
4
0C159200
& UP
2.562
Mercury / Mariner
Sierra Piston Kit Contents (See Application Charts for SpeciFc Applications)
Model / HP
Cyl.
Bore size
Piston
OEM Part #
Piston Ring
OEM Part #
Circlips
OEM Part #
2 Ring Pistons - High Dome
35-140
2-6
2.875 / Std.
—
774-9137A12
39-817096A6
40-52035
35-140
2-6
2.890 / .015
774-9137A13
39-817096A16
40-52035
35-140
2-6
2.905 / .030
774-9137A14
39-817096A26
40-52035
2 Ring Pistons - Low Dome
35-140
2-6
2.875 / Std.
—
774-9137A9
39-817096A6
40-52035
35-140
2-6
2.890 / .015
774-9137A10
39-817096A16
40-52035
35-140
2-6
2.905 / .030
774-9137A11
39-817096A26
40-52035
3 Ring Pistons - High Dome
35-140
2-6
2.875 / Std.
➀
—
776-8896A3
➀
39-78816A12
40-52035
35-140
2-6
2.890 / .015
776-8897A2
39-78811A12
40-52035
35-140
2-6
2.905 / .030
➀
776-8898A2
➀
39-88392A12
40-52035
Model / HP
Cyl.
Bore size
Piston
OEM Part #
Piston Ring
OEM Part #
Circlips
OEM Part #
OUTBOARD—MERCURY/MARINER-InternalEngineSystem