Mercruiser Belts






Belts for Mercruiser Stern Drives
from Sierra











Engine

Years

Serial Range

Alternator/ Water Pump Belt

Power Steering Belt

Sea Water Pump Belt

120 1964-1973 1666601 - 3770649 18-15410 - -
120 1974-1982 3770650 - 6229717 18-15410

18-15370(3) -
120 1974-1982 3770650 - 6229717 18-15410

18-15400 (4) -
120 (2.5L) 1982-1989 6229718 - C853255 18-15410

- -
120 (2.5L) 1982-1989 6229718 - C853255 W/P/S 18-15410

18-15370

-
140 1968-1973 2508261 - 3770649 18-15410

- -
140 1974-1982 3770650 - 6229717 18-15410

18-15370(3)

-
140 1974-1982 3770650 - 6229717 18-15410

18-15400 (4) -
140 1982-newer 6229718 - UP 18-15410

- -
140 1982-newer 6229718 - UP W/PS 18-15400 18-15370

-
150 1964-1966 1666495 - 2048646 18-15410


- -
160 1967-1969 2048022 - 2770031 18-15410

- -
165 1970-1973 2770032 - 3774864 18-15410

- -
165 1974-1981 3774865 - 5813433 18-15410

18-15370(3)

-
165 1974-1981 3774865 - 5813433 18-15410

18-15400 (4) -
165 1985-1989 6916779 - C762299 - 18-15410 -
170 1985-1989 6916779 - C762299 - 18-15410 -
175 1987 OB527955 - OB773242 - 18-15490 -
175 1985-1992 A331455 - D714106 18-15440 18-15520 18-15345
180 1985-1989 6916779 - C762299 - 18-15410 -
185 1985-1992 A331455 - D714106 18-15440

18-15520 18-15345
190 1985-1989 6916779 - C762299 - 18-15410 -
200 1985-1995 6218462 - F600999 18-15440

18-15495 18-15345 (8)
200 1985-1995 6218462 - F600999 18-15460

18-15520 18-15290
(9)
200 1969 2453769 - 2712072 18-15410


- -
200 1987 OB525982 - OB774444 - 18-15490 -
205 1985-1991 A331455 - D714369 18-15440

18-15520 18-15345
205 1987 OB527955 - OB775129 - 18-15490 -
215 1970-1972 2781153 - 3563181 18-15440

- -
215 MIE 1970-1972 2781153 - 3563181
- -
225 1967-1969 2278647 - 2694014 18-15460

- -
225 1973-1974 3385721 - 4166999 18-15440

18-15520 18-15345
225 MIE 1967-1969 2278647 - 2694014 18-15460

- -
225 MIE 1973-1974 3385721 - 4166999 18-15440

- -
228 1983-1995 6218462 - F600999 18-15440

18-15495 18-15345 (8)
228 1983-1995 6218462 - F600999 18-15460

18-15520 18-15290 (9)
228 MIE 1977 4765100 - 4929030 18-15460

- 18-15325
228 MIE 1978-1987 4929030 - B788151 18-15440

18-15495 18-15345(1)
228 MIE 1978-1987 4929030 - B788151 18-15460

18-15520 18-15290 (1)

228 W/ HIGH MT P/S 1977-1982 4765100 - 6218461 18-15440

18-15495 18-15345
228 W/O HIGH MT P/S 1977-1982 4765100 - 6218461 18-15460

18-15325 18-15345
230 1983-1995 6218462 - F600999 18-15440

18-15495 18-15345 (8)
230 1983-1995 6218462 - F600999 18-15460

18-15520 18-15290 (9)

230 1987 OB525982 - OB773739 - 18-15490 -
230 MIE 1978-1987 4929030 - B788151 18-15440

18-15495 18-15345 (1)
230 MIE 1978-1987 4929030 - B788151 18-15460

18-15520 18-15290 (2)

233 1975-1977 4173000 - 4902304 18-15440

- -
233 1975-1977 4173000 - 4902304 18-15440

18-15290 18-15345 (1)
233 MIE 1975-1976 4173000 - 4775784 18-15440

- -
250 1968-1969 2314301 - 2639854
18-15460


- -
250 1977 4768000 - 4908849 18-15440

18-15345 18-15345
255 1973-1974 3258728 - 4175499 18-15440

- -
255 1975-1976 4175500 - 4498700 18-15460

18-15300 -
255 1976 4498701 - 4499060 18-15460

- -
255 1976 4499061 - 4767999 18-15460

- -
255 MIE 1973-1974 3258728 - 4175499 18-15440

- -
255 MIE 1978-1986 4924565 - B522505 18-15440

- 18-15345
255 MIE 1975-1977 4175500 - 4498700 18-15460

- -
255 MIE 1977-1978 4498701 - 4924564 18-15460

- 18-15345
255 Ski 1978-1986 4924565 - B522505 18-15440

- 18-15345
260 1987 OB525982 - OB773304 - 18-15490 -
260 1983-1995 6218462 - F600999 18-15440

18-15495 18-15345 (8)
260 1983-1995 6218462 - F600999 18-15460

18-15520 18-15290
(9)
260 MIE 1978-1986 4924565 - B522505 18-15440

- 18-15345
260 MIE 1987-1993 B522506 - F024999 18-15440

- 18-15345 (1)
260 MIE 1987-1993 B522506 - F024999 18-15460

- 18-15290
 (2)
260 Ski 1978-1986 4924565 - B522505 18-15440

- 18-15345
260 Ski 1987-1993 B522506 - F024999 18-15440

- 18-15345 (1)
260 Ski 1987-1993 B522506 - F024999 18-15460

- 18-15290
(2)
260 W/HM P/S 1978-1982 4908850 - 6218461 18-15440

18-15495 18-15345
260 W/LM P/S 1978-1982 4908850 - 6218461 18-15460

- 18-15345
270 MCM/MIE 1969-1972 2851074 - 3385720 18-15460

- -
280 1975 4176250 - 4176468 18-15460

18-15300 -
280 1975-1976 4176469 - 4499390 18-15460

18-15300 -
280 1976 4499391 - 4499780 18-15460

- -
280 1976 4499781 - 4770199 18-15460

18-15325 -
320 (EFI) 1987-1989 A543604 - C622418 18-15440

18-15520 -
325 MCM 1968-1974 2278747 - 3780449 18-15480 - -
325 MIE 1968-1974 2278747 - 3780449 18-15480

- -
330 1977-1981 4623115 - 6083144 18-15470 - 18-15345
330 1982-1987 6083144 - B816540 18-15470

18-15500 (6) 18-15345 (1)
330 1982-1987 6083144 - B816540 18-15470

18-15550(7) 18-15290 (2)

340 (7.4L) 1981-1992 5889914 - D715493 18-15470

- 18-15345 (1)
340 (7.4L) 1981-1992 5889914 - D715493 18-15470 - 18-15290 (2)

350 MAG 1986-1995 A635178 - F600999 18-15440

18-15520 18-15345 (8)
350 MAG 1986-1995 A635178 - F600999 18-15460

- 18-15290
(9)
350 MAG 1996 F601000 - K001500 18-15460

- 18-15290

350 Mag Alpha 1987-1995 OB525982 - OF600999 - 18-15490 -
350 Mag Alpha (4 bbl) 1996 OF601000 - OK001526 - 18-15490 -
350 Mag Alpha EFI (Gen+) 1996 OF800300 - OK001508 - 18-15490 -
350 Mag Bravo MPI 1995 OF415189 - OF601999 - 18-15490 -
350 Mag Bravo MPI (Gen+) 1996 OF602000 - OK001500 18-15460
-
18-15490 -
350 MAG Ski 1991-1996 D505450 - K040005
-
18-15290


350 MIE 1974-1975 3780450 - 4501640 18-15480

- -
350 MIE 1976 4501641 - 4623109 18-15480

- 18-15345
370 (TRS) 1978-1985 4179554 - 6721527 18-15480

- -
370 (TRS) 1985-1987 6721528 - B714586 18-15480

18-15500 -
390 MCM 1969-1970 2781129 - 3042731 18-15480

- -
390 MIE 1969-1970 2781129 - 3042731 18-15480

- -
400 (TRS) 1980-1986 4179554 - B457644 18-15480

- -
420 1987-1992 A398941 - D725499 18-15480

18-15500 -
420 1992 D725500 - D937011 18-15480

- 18-15400
425 1987-1992 A398941 - D725499 18-15480

18-15500 -
425 1992 D725500 - D937011 18-15480

- 18-15400

440 (TRS) 1983-1986 4179554 - B485220 18-15480

- -
454 MAG 1988-1992 B721206 - D805068 18-15470

18-15500 18-15290
454 MAG 1988-1992 B721206 - D805068 18-15480

- 18-15290

454 MAG 1992-1997 D805069 - K999999 18-15480

- 18-15400

454 MAG (MPI) 1994-1997 F115700 - K147349 18-15480

- 18-15400

454 MAG (MPI) 1997 K147350 - K999999 18-15480

- 18-15290

454 MAG Alpha 1986-1988 A631894 - UP 18-15470

18-15500  (6) -
454 MAG Alpha 1986-1988 A631894 - UP 18-15470

18-15550(7) -
454 MAG Ski 1995-1997 F215800 - K999999 18-15480

- 18-15400

450 1995-1996 F347100 - F347227 18-15480

- 18-15400

460 (TRS) 1983-1986 4179554 - 6181046 18-15480

- -
470 (170HP) 1976-1982 4208730 - 6218036 - 18-15405 -
470 (170HP) 1983-1984 6218037 - 6916778 - 18-15410 -
488 1983-1984 6170297 - 6916778 - 18-15410 -
502 MAG 1990-1997 C878221 - D824588 18-15480

- 18-15290

502 MAG 1990-1997 C824589 - K999999 18-15480

- 18-15400

502 MAG (MPI) 1994-1997 D840650 - K147349 18-15480

- 18-15400

502 MAG (MPI) 1997 K147350 - K999999 18-15480

- 18-15290

888 1971-1977 3108723 - 4887829 18-15440

- -
888 1971-1977 3108723 - 4887829 18-15440

18-15290  (5) 18-15440
898 1985-1995 6218462 - F600999 18-15440

18-15495 18-15345(8)
898 1985-1995 6218462 - F600999 18-15460

18-15520 18-15290
(9)
898 W/ HIGH MT P/S 1977-1984 4762210 - 6218461 18-15440

18-15495 18-15345
898 W/O HIGH MT P/S 1977-1984 4762210 - 6218461 18-15460

18-15325 18-15345
3.0L 1982-newer 6229718 - UP 18-15410 - -
3.0L 1982-newer 6229718 - UP W/PS 18-15400

18-15370 -
3.0LX 1982-newer 6229718 - UP 18-15410 - -
3.0LX 1982-newer 6229718 - UP W/PS 18-15400 18-15370 -
3.7L 1985-1989 6916779 - C762299 - 18-15410 -
4.3L 1985-1992 A331455 - D714106 18-15440

18-15520 18-15345
4.3L 1992-1996 D714107 - F802999 18-15460

- 18-15290

4.3L (2bbl) 1988-1992 OB773243 - OD714106 - 18-15490 -
4.3L (GenII) (2 bbl) 1992-1996 OD714107 - OF802999 - 18-15490 -
4.3LX (4 bbl) 1988-1992 OB775130 - OD714369 - 18-15490 -
4.3LX (GenII) (4 bbl) 1992-1996 OD714370 - OF802999 - 18-15490 -
5.0L 1985-1995 6218462 - F600999 18-15440

18-15495 18-15345 (8)
5.0L 1985-1995 6218462 - F600999 18-15460

18-15520 18-15290
(9)
5.0L 1983-1995 6218462 - F600999 18-15440

18-15495 18-15345 (8)
5.0L 1983-1995 6218462 - F600999 18-15460

18-15520 18-15290
(9)
5.0L (2 bbl) 1988-1995 OB774445 - OF600999 - 18-15490 -
5.0L MIE 1978-1987 4929030 - B788151 18-15440

18-15495 18-15345 (1)
5.0L MIE 1978-1987 4929030 - B788151 18-15460

18-15520 18-15290
(2)
5.0LX (4 bbl) 1988-1995 OB773740 - OF600999 - 18-15490 -
5.7L 1996 F601000 - K001505 18-15460

- 18-15290
5.7L 1983-1995 6218462 - F600999 18-15440

18-15495 18-15345 (1)
5.7L 1983-1995 6218462 - F600999 18-15460

18-15520 18-15290
(9)
5.7L 1988-1996 OB525982 - OF600999 - 18-15490 -
5.7L (2bbl) 1996 OF601000 - OK001526 - 18-15490 -
5.7L Alpha EFI (TBI) 1995 OF355305 - OF752389 - 18-15490 -
5.7L Bravo EFI (TBI) 1995 OF225560 - OF752399 - 18-15490 -
5.7L EFI (2bbl) 1996 OF752400 - OK001505 - 18-15490 -
5.7L MIE 1978-1986 4924565 - B522505 18-15440

- 18-15345
5.7L MIE 1987-1993 B522506 - F024999 18-15440

- 18-15345 (1)
5.7L MIE 1987-1993 B522506 - F024999 18-15460

- 18-15290
(2)
5.7L MIE 1994-1996 F025000 - K040306 18-15460

N/A 18-15290

5.7L MIE 1987-1993 B522506 - F024999 18-15440

- 18-15345 (1)
5.7L MIE 1987-1993 B522506 - F024999 18-15460

- 18-15290
(2)
5.7L Ski 1978-1986 4924565 - B522505 18-15440

- 18-15345
5.7L Ski 1987-1993 B522506 - F024999 18-15440

- 18-15345 (1)
5.7L Ski 1987-1993 B522506 - F024999 18-15460

- 18-15290
(2)
5.7L Ski 1994-1996 F025000 - K040306 18-15460

N/A 18-15290

5.7L Ski 1987-1993 B522506 - F024999 18-15460

- 18-15290
(2)

5.7LX 1996 F601000 - K001505 18-15460

- 18-15290


5.7LX (4bbl) 1996 OF601000 - OK001526 - 18-15490 -
5.7LX Bravo EFI (Gen +) 1996 OF800300 - OK001508 - 18-15490 -
5.7LX EFI (4bbl TBI) 1996 OF752400 - OK001505 - 18-15490 -
7.4L Bravo 1988-1991 B771113 - D603117 18-15470

18-15500 18-15290

7.4L Bravo 1988-1991 B771113 - D603117 18-15480

- 18-15290

7.4L Bravo 1992-1997 D603118 - K999999 18-15480

- 18-15290

7.4L MIE 1989-1992 C391564 - D715493 18-15470

- 18-15290

7.4L MIE 1989-1992 C391564 - D715493 18-15480

- 18-15290

7.4L MIE 1992-1997 C391564 - K999999 18-15480

- 18-15400
7.4LX Bravo 1992-1997 D603118 - K999999 18-15480

- 18-15400

7.4LX Bravo (MPI) 1996-1997 F602010 - K147349 18-15480

- 18-15400

7.4LX Bravo (MPI) 1997 K147350 - K999999 18-15480

- 18-15290

7.4LX Bravo (TBI) 1996-1997 F820000 - K999999 18-15480

- 18-15290

8.2L MIE 1990-1993 C878221 - D857199 18-15480

- 18-15290

8.2L MIE 1993-1997 D857200 - K999999 18-15480

- 18-15400

8.2L MPI MIE 1996-1997 F819620 - K147349 18-15480

- 18-15400

8.2L MPI MIE 1997 K147350 - K999999 18-15480

- 18-15290

Black Scorpion Ski 1996 F800000 - K040000 18-15460

- 18-15290

Engine

Years

Serial Range

Alternator/ Water Pump Belt

Power Steering Belt

Sea Water Pump Belt

Notes:
(1) : w/stamped steel pulley
(2) : w/cast alum. pulley 
(3) : (37") 
(4) : (40")
(5) : (30") 
(6) : (50")
(7) : (55") 
(8) : w/ closed cooling
(9) : w/o closed cooling






Mercruiser Serpentine Belts


Engine

Years

Serial #

Mercruiser Belt #

Serpentine Belt

4.3L Alpha 1996-1999 OF803000-OL618999 57-807755-5 18-15113
 
(4)
4.3L Alpha 1996-1999 OF803000-OL618999 57-861758 18-15116
(
2 , 6)
4.3L Alpha 1996-1999 OF803000-OL618999 57-861759 18-15117
(2,5)

4.3L Alpha 2000-2004 L619000 & up 57-863876 4 18-15101
(3,6,7)

4.3L Alpha 2000-2004 OL619000 & up 57-863876 8 18-15104
(4,5,7)

4.3L Alpha 2000-2004 OL619000 & up 57-863876 9 18-15105
(4,6,7)

4.3L Bravo 1996-1999 OF803000-OL618999 57-861049 18-15114
(2,5)

4.3L Bravo 1996-1999 OF803000-OL618999 57-861757 18-15115
(2,6)

4.3L Bravo 2000-2004 OL619000 & up 57-863876 8
18-15104
(4,7)




5.0L Bravo 2002-2004 OM600000 & up 57-863876 6 18-15102
(3,5,7)

5.0L Alpha 1998-1999 OL012052-OL618999 57-807755-5 18-15113
(4,6)

5.0L Alpha 1998-1999 OL012052-OL618999 57-861049
18-15114
(5)

5.0L Alpha 1998-1999 OL012052-OL618999 57-861758 18-15116
 (2,6) 

5.0L Alpha 2000-2004 OL619000 & up 57-863876 4 18-15102
(3,6,7)

5.0L Alpha 2002-2004 OM600000 & up 57-863876 6 18-15102
(3,5,7)

5.0L Alpha 2001-2004 OL619000 & up 57-863876 8 18-15104
(4,5,7)

5.0L Alpha 2000-2004 OL619000 & up 57-863876 9 18-15105
(4,6,7)

5.0L Bravo 1998-1999 OL012052-OL618999 57-861049
18-15114

(2,5)


5.0L Bravo 1998-1999 OL012052-OL618999 57-861757 18-15115
(2,6)

5.0L Bravo 2000-2004 OL619000 & up 57-863876 8 18-15104
(4,7,)
350 Mag, Alpha 1997-2004 OK001501-OL618999 57-807755-5 18-15113
(4,6)

350 Mag, Alpha 1997-2004 OK001501-OL618999 57-861049 18-15114

(2,5)

350 Mag, Alpha 1997-2004 OK001501-OL618999 57-861758 18-15116
(2,6)

350 Mag, Alpha 2000-2004 OL619000 & up 57-863876 4 18-15103
(3,6,7)

350 Mag, Alpha 2002-2004 OM600000 & up 57-863876 6
18-15102
(3,5,7)

350 Mag, Alpha 2000-2004 OL619000 & up 57-863876 8 18-15104
(4,5,7)

350 Mag, Alpha 2000-2004 OL619000 & up 57-863876 9 18-15105
(4,6,7)

350 Mag, Bravo 1997-2004 OK001501-OL618999 57-861049 18-15114

(2,5)

350 Mag, Bravo 1997-2004 OK001501-OL618999 57-861757 18-15115
(2,6)

350 Mag, Bravo 2002-2004 OM600000 & up 57-863876 6 18-15102
(3,5,7)

350 Mag, Bravo 2000-2004 OL619000 & up 57-863876 8 18-15104
(4,7)

5.7L Alpha 1997-1999 OK001506-OL618999 57-807755-5 18-15113
(4,6)

5.7L Alpha 1997-1999 OK001501-OL618999 57-861049 18-15114

(2,5)

5.7L Alpha 1997-1999 OK001506-OL618999 57-861758 18-15116
(2,6)

5.7L Alpha 2000-2004 OL619000 & up 57-863876 4 18-15104
(3,6,7)

5.7L Alpha 2002-2004 OM600000 & up 57-863876 6 18-15102
(3,5,7)

5.7L Alpha 2000-2004 OL619000 & up 57-863876 8 18-15104
(4,5,7)

5.7L Alpha 2000-2004 OL619000 & up 57-863876 9 18-15105
(4,6,7)

5.7L Bravo 1997-1999 OK001506-OL618999 57-861049 18-15114

(2,5)

5.7L Bravo 1997-1999 OK001506-OL618999 57-861757 18-15115
(2,6)

5.7L Bravo 2002-2004 OM600000 & up 57-863876 6 18-15102
(3,5,7)

5.7L Bravo 2000-2004 OL619000 & up 57-863876 8 18-15104
(4,7)

5.7L Ski 1997-2002 K040004-M316999 57-807755 4 18-15112
377 Scorpion MCM 1999-2004 OL416146 & up 57-861757 18-15115
377 Scorpion Ski 1997-1998 K000656 & up 57-807755 4 18-15112

454 Mag MPI 1998-2001 OL010029-OM024999 57-861049 18-15114

(1)

454 Mag MPI 1998-2001 OL010029-OM024999 57-863876 6 18-15102
(2)

454 Mag MPI 1998-2001 OL010029-OM024999 57-863876 7 18-15103
(4)


454 Mag MPI Horizon MIE 1998-2001 OL002200-OL674000 57-863876 7 18-15103

496 Mag & HO 2000-2004 OM025000 & up 57-863876 1 18-15119
500 EFI 1999-2004 L001477 & up 57-807755 4 18-15112

502 Mag MPI 1998-2001 OL017000-OM024999 57-861049 18-15114

(1)
502 Mag MPI 1998-2001 OL017000-OM024999 57-863876 7 18-15103
(4)

502 Mag. MPI 1998-2001 OL017000-OM024999 57-863876 6 18-15102
(2)

525 EFI 2003-2004 OM900146 & up 57-863876 2 18-15120
575 Sci 2000-2004 OL306696 & up 57-807755 4 18-15113
7.4L MPI 1998-2001 OL010003-OM024330 57-861049
18-15114
(1)

7.4L MPI 1998-2001 OL010003-OM024330 57-863876 6 18-15102
(2)

7.4L MPI 1998-2001 OL010003-OM024330 57-863876 7 18-15103
(4)

7.4L MPI MIE 1998-2001 OL002006-OM025999 57-863876 7 18-15103

Black Scorpion Ski 1997-2001 K040001-M391599 57-807755 4 18-15112

MX 6.2L Blk Scorpion Ski 2001 L670015-M391599 57-807755 4 18-15112

MX 6.2L MPI 2002-2004 OM600000 & up 57-863876 6 18-15102
(3,5)

MX 6.2L MPI 2000-2004 OL680003 & up 57-863876 8 18-15104
(4,7)

MX 6.2L MPI Horizon 2002-2004 OM600000 & up 57-863876 6 18-15102
(3)

MX 6.2L MPI Horizon 2001-2004 OM300000 & up 57-863876 8 18-15104
(4)

MX 6.2L MPI Horizon MIE 2001 M300000-M310099 57-807755 4 18-15112

MX 6.2L MPI MIE 1999-2001 L670000-M310099 57-807755 4 18-15112

8.1S MPI MIE & HO 2000-2004 OM025000 & up 57-863876 2 18-15120
8.2L MPI MIE 1998-2001 OL002450-OL674200 57-863876 7 18-15103

Engine

Years

Serial #

Mercruiser Belt #

Serpentine Belt

Notes:
(1) : Use with plastic 4-3/4" dia. p/s pump pulley
(2) : Use with metal 5-3/4" dia p/s pump pulley
(3) : For engines with power steering
(4) : For engines without power steering
(5) : For engines with closed cooling
(6) : For engines with standard cooling
(7) : Engines with high mounted alternators




















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