Page 439 - 2021 Sierra Catalog

Model / HP
9.9 / 15 48
Model
Cyl.
2 2
.25mm O.S.
18-3977
Ser# Code
Bore Size
std std
Piston OEM Part #
18-4135 761-7982M, 761-7982T, 761-7134M, 761-7133M, 761-7131M 18-4138 761-8484M, 761-7198M, 761-7197M, 761-7196M
Piston Ring
OEM Part #
39-15320M, 39-15320T —
O.E. #
39-15322M
9.9 682 15C 684 30A 689
Ser #
ALL
ALL
ALL
ALL
ALL
ALL S-02441&Up/L33132&UP
M 002731 & Up / ML 314101 & Up E 00101-001170 / EL 30101-304180
Standard Piston
18-4135 18-4135 18-4138
— — — — — —
.25mm Piston
— — — — — — — — —
.50mm Piston
— — — — — — — — —
Standard Rings
18-3976 18-3976
— — — — — — —
.25mm Rings
18-3977 18-3977 — 18-3986 18-3986 18-3986 18-3992 18-3992 18-3992
.50mm Rings
18-3978 18-3978
— — — — — — —
OEM Part #
40-52035 40-52035 40-52035
40-52035 40-52035 40-52035
40-52035 40-52035 40-52035
40-52035 40-52035 40-52035
40-52035 40-52035 40-52035 40-52035 40-52035 40-52035 40-52035 40-52035 40-52035
40-52035
40-52035 40-52035
.015 O.S. Rings
Qty. Req’d
2 2 2 2 2 2 2 2 2
20C, 25A 25C 28
48 W48 60
Model / HP
35-140 35-140 35-140
35-140 35-140 35-140
35-140 35-140 35-140
35-140 35-140 35-140
40-50 40-50 40-50 50-60 50-60 50-60 70-115 70-115 70-115
75-125
75-125 75-125
HP
6A9 695 664 670 670 675
Cyl.
2- 6 2- 6 2- 6
2- 6 2- 6 2- 6
2- 6 2- 6 2- 6
2- 6 2- 6 2- 6
4 4 4 3 3 3 3-4 3-4 3-4
3-4
3-4 3-4
Cyl.
MERCURY / MARINER
Sierra Piston Kit Contents (See Application Charts for Specific Applications)
ALL PISTONS
ARE SUPPLIED COMPLETE WITH PISTON RINGS, WRIST PIN AND CIRCLIPS.
OUTBOARD — MERCURY/MARINER - Internal Engine System
Bore Size
2.875 / Std. 2.890 / .015 2.905 / .030
2.875 / Std. 2.890 / .015 2.905 / .030
2.875 / Std. 2.890 / .015 2.905 / .030
2.875 / Std. 2.890 / .015 2.905 / .030
2.565 / Std. 2.580 / .015 2.595 / .030 2.875 / Std. 2.890 / .015 2.905 / .030 3.375 / Std. 3.390 / .015 3.405 / .030
3.500 / Std.
3.515 / .015 3.530 / .030
Piston OEM Part #
— 774-9137A12 774-9137A13 — 774-9137A14
— 774-9137A9 18-4515 774-9137A10 774-9137A11
776-8896A3
776-8897A2 — 776-8898A2
— 776-8600A9 776-9095A1 18-4156 776-9096A1
Piston Ring 2 RING PISTONS - HIGH DOME 18-3918 18-3919 18-3920
2 RING PISTONS - LOW DOME 18-3918 18-3919 18-3920
3 RING PISTONS - HIGH DOME
➀ 18-3902 18-3916 ➀18-3917
3 RING PISTONS - LOW DOME
➁18-3902 ➁18-3916 18-3917
2 RING PISTONS - CROSSFLOW
OEM Part #
39-817096A6 39-817096A16 39-817096A26
39-817096A6 39-817096A16 39-817096A26
39-78816A12, 39-45155A12 39-78811A12, 39-45204A12 39-88392A12, 39-88392
39-78816A12 39-78811A12, 39-45204A12 39-88392A12, 39-88392
39-18653A12 39-18653A1 39-18653A2 39-19721A6 39-19721A1 39-19721A2 39-96170A12 39-96170A3 39-96170A4
39-822321A12, 39-824905A12
39-822321A1
39-822321A2
Circlips
18-4294 ➃ 18-4294 ➃ 18-4294 ➃
18-4294 ➃ 18-4294 ➃ 18-4294 ➃
18-4294 ➃ 18-4294 ➃ 18-4294 ➃
18-4294 ➃ 18-4294 ➃ 18-4294 ➃
18-4294 ➃ 18-4294 ➃ 18-4294 ➃ 18-4294 ➃ 18-4294 ➃ 18-4294 ➃ 18-4294 ➃ 18-4294 ➃ 18-4294 ➃
18-4294 ➃ 18-4294 ➃
18-4294 ➃ Std. Rings
MARINER (JAPANESE MODELS)
Sierra Piston Kit Contents (See Application Charts for Specific Applications)
O.E. #
39-18939M, 39-18939T
MARINER PISTON RINGS - JAPANESE MODELS
.25mm O.S. O.E. # .25mm O.S. O.E. #
18-3986 39-81096M 18-3992 39-83196M
.50mm O.S.
18-3978
MARINER PISTON AND RINGS APPLICATION - JAPANESE MODELS
18-4620 18-4621 18-4622 — 18-4017 18-4018 18-4623 18-4624 18-4625
18-4626
18-4627 18-4628
Beginning Serial No.
780-9229A7, 743-5172A6, 743-3193A4, 743-3193A2 780-9229A10, 743-3366A2, 743-3366A1 780-9229A11, 743-7716A2
783-9613A1
783-9613A2, 783-9613T2 783-9613A3, 783-9613T3 777-815965T4, 777-815965A4 777-815965A5
777-815965A6
2704-826191T4, 2704-826191A4, 2704-826191A6, 2704-821896A6, 2704-812896A2
2704-821896A3 2704-821896A4
18-3966 18-3967 18-3968 18-4019 18-4020 18-4021 18-3979 — 18-3981
18-3982
—
18-3984
3 RING PISTON AND RINGS APPLICATION (REFERENCE ONLY ➂)
Ending Serial Std. Cyl. Dia. Std. Piston .015 O.S. Piston .030 O.S. Piston
No. (Bore)
.030 O.S. Rings
3.5 1 6202173 & UP 2 — — —
APPLICATION CONTINUED ON NEXT PAGE
— —
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
421
➃ This product is priced per piece. To order priced per package, please add -9 to the part number.
18-3976 —