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Sierra Marine Parts Catalog: Mercury Mariner

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ALL PISTONS
ARE SUPPLIED COMPLETE WITH PISTON RINGS, WRIST PIN AND CIRCLIPS.
Mariner (Japanese Models)
Sierra Piston Kit Contents (See Application Charts for Specific Applications)
Model / HP
Cyl.
Bore size
Piston
OEM Part #
Piston Ring
OEM Part #
9.9 / 15
2
std
18-4135
761-7982M, 761-7982T
18-3976
39-15320M
48
2
std
18-4138
761-8484M
--
--
MARINER PISTON AND RINGS APPLICATION -- JAPANESE MODELS
Ser #
Standard
.25mm
.50mm
Standard
.25mm
.50mm
Qty.
Model
Code
Ser #
Piston
Piston
Piston
Rings
Rings
Rings
Req'd
9.9
682
ALL
18-4135
--
--
18-3976
--
--
2
15C
684
ALL
18-4135
--
--
18-3976
--
--
2
30A
689
ALL
18-4138
--
--
--
--
--
2
Mercury / Mariner
Sierra Piston Kit Contents (See Application Charts for Specific Applications)
Model / HP
Cyl.
Bore size
Piston
OEM Part #
Piston Ring
OEM Part #
Circlips
OEM Part #
2 Ring Pistons - High Dome
2-6
2.875 / Std.
--
774-9137A12
18-3918
39-817096A6
18-4294
40-52035
35-140
35-140
2-6
2.890 / .015
774-9137A13
18-3919
39-817096A16
18-4294
40-52035
35-140
2-6
2.905 / .030
18-4535
774-9137A14
18-3920
39-817096A26
18-4294
40-52035
2 Ring Pistons - Low Dome
35-140
2-6
2.875 / Std.
--
774-9137A9
18-3918
39-817096A6
18-4294
40-52035
2-6
2.890 / .015
774-9137A10
18-3919
39-817096A16
18-4294
40-52035
35-140
35-140
2-6
2.905 / .030
774-9137A11
18-3920
39-817096A26
18-4294
40-52035
3 Ring Pistons - High Dome
35-140
2-6
2.875 / Std.
--
776-8896A3
18-3902
39-78816A12
18-4294
40-52035
35-140
2-6
2.890 / .015
776-8897A2
18-3916
39-78811A12
18-4294
40-52035
2-6
2.905 / .030
18-4535
776-8898A2
18-3917
39-88392A12
18-4294
40-52035
35-140
Model / HP
Cyl.
Bore size
Piston
OEM Part #
Piston Ring
OEM Part #
Circlips
OEM Part #
3 Ring Pistons - Low Dome
35-140
2-6
2.875 / Std.
--
776-8600A9
18-3902
39-78816A12
18-4294
40-52035
35-140
2-6
2.890 / .015
776-9095A1
18-3916
39-78811A12
18-4294
40-52035
35-140
2-6
2.905 / .030
--
776-9096A1
18-3917
39-88392A12
18-4294
40-52035
2 Ring Pistons - Crossflow
40-50
4
2.565 / Std.
18-4620
780-9229A7
18-3966
39-18653A12
18-4294
40-52035
40-50
4
2.580 / .015
18-4621
780-9229A10
18-3967
39-18653A1
18-4294
40-52035
40-50
4
2.595 / .030
18-4622
780-9229A11
18-3968
39-18653A2
18-4294
40-52035
50-60
3
2.875 / Std.
--
783-9613A1
18-4019
39-19721A6
18-4294
40-52035
50-60
3
2.890 / .015
18-4017
783-9613A2
--
39-19721A1
18-4294
40-52035
50-60
3
2.905 / .030
18-4018
783-9613A3
--
39-19721A2
18-4294
40-52035
70-115
3-4
3.375 / Std.
18-4623
777-815965T4
18-3979
39-96170A12
18-4294
40-52035
70-115
3-4
3.390 / .015
18-4624
777-815965A5
--
39-96170A3
18-4294
40-52035
70-115
3-4
3.405 / .030
18-4625
777-815965A6
--
39-96170A4
18-4294
40-52035
75-125
3-4
3.375 / Std.
18-4626
2704-826191T4
18-3982
39-822321A12
18-4294
40-52035
75-125
3-4
3.390 / .015
18-4627
2704-821896A3
--
39-822321A1
18-4294
40-52035
75-125
3-4
3.405 / .030
18-4628
2704-821896A4
--
39-822321A2
18-4294
40-52035
3 RING INLINE PISTON AND RINGS APPLICATION - REFERENCE ONLY
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
3.5
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
--
--
--
18-3903
--
--
25
2
1467499
149931
2.562
--
--
--
18-3903
--
--
30 Jet (40 Hp)
4
0C159200
& Up
2.562
18-4620
18-4621
18-4622
18-3966
18-3967
18-3968
APPLICATION CONTINUED ON NEXT PAGE
3 ring high dome NLA, 2 ring piston are now substituted3 ring low dome NLA, 2 ring piston are now substituted
347
Chart is for referencing only, pistons received will be 2 ring version