Mercruiser Serpentine Belts

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Engine

Years

(1996 to 2004)

Engine

Years

Serial #

Mercruiser Belt #

Serpentine Belt

4.3L Alpha1996-1999OF803000-OL61899957-807755-518-15113(4)
4.3L Alpha1996-1999OF803000-OL61899957-86175818-15116(2,6)
4.3L Alpha1996-1999OF803000-OL61899957-86175918-15117(2,5)
4.3L Alpha2000-2004L619000 & up57-863876 418-15101(3,6,7)
4.3L Alpha2000-2004OL619000 & up57-863876 818-15104(4,5,7)
4.3L Alpha2000-2004OL619000 & up57-863876 918-15105(4,6,7)
4.3L Bravo1996-1999OF803000-OL61899957-86104918-15114(2,5)
4.3L Bravo1996-1999OF803000-OL61899957-86175718-15115(2,6)
4.3L Bravo2000-2004OL619000 & up57-863876 818-15104(4,7)
5.0L Bravo2002-2004OM600000 & up57-863876 618-15102(3,5,7)
5.0L Alpha1998-1999OL012052-OL61899957-807755-518-15113(4,6)
5.0L Alpha1998-1999OL012052-OL61899957-86104918-15114(5)
5.0L Alpha1998-1999OL012052-OL61899957-86175818-15116(2,6)
5.0L Alpha2000-2004OL619000 & up57-863876 418-15102(3,6,7)
5.0L Alpha2002-2004OM600000 & up57-863876 618-15102(3,5,7)
5.0L Alpha2001-2004OL619000 & up57-863876 818-15104(4,5,7)
5.0L Alpha2000-2004OL619000 & up57-863876 918-15105(4,6,7)
5.0L Bravo1998-1999OL012052-OL61899957-86104918-15114(2,5)
5.0L Bravo1998-1999OL012052-OL61899957-86175718-15115(2,6)
5.0L Bravo2000-2004OL619000 & up57-863876 818-15104(4,7)
350 Mag, Alpha1997-2004OK001501-OL61899957-807755-518-15113(4,6)
350 Mag, Alpha1997-2004OK001501-OL61899957-86104918-15114(2,5)
350 Mag, Alpha1997-2004OK001501-OL61899957-86175818-15116(2,6)
350 Mag, Alpha2000-2004OL619000 & up57-863876 418-15103(3,6,7)
350 Mag, Alpha2002-2004OM600000 & up57-863876 618-15102(3,5,7)
350 Mag, Alpha2000-2004OL619000 & up57-863876 818-15104(4,5,7)
350 Mag, Alpha2000-2004OL619000 & up57-863876 918-15105(4,6,7)
350 Mag, Bravo1997-2004OK001501-OL61899957-86104918-15114(2,5)
350 Mag, Bravo1997-2004OK001501-OL61899957-86175718-15115(2,6)
350 Mag, Bravo2002-2004OM600000 & up57-863876 618-15102(3,5,7)
350 Mag, Bravo2000-2004OL619000 & up57-863876 818-15104(4,7)
5.7L Alpha1997-1999OK001506-OL61899957-807755-518-15113(4,6)
5.7L Alpha1997-1999OK001501-OL61899957-86104918-15114(2,5)
5.7L Alpha1997-1999OK001506-OL61899957-86175818-15116(2,6)
5.7L Alpha2000-2004OL619000 & up57-863876 418-15104(3,6,7)
5.7L Alpha2002-2004OM600000 & up57-863876 618-15102(3,5,7)
5.7L Alpha2000-2004OL619000 & up57-863876 818-15104(4,5,7)
5.7L Alpha2000-2004OL619000 & up57-863876 918-15105(4,6,7)
5.7L Bravo1997-1999OK001506-OL61899957-86104918-15114(2,5)
5.7L Bravo1997-1999OK001506-OL61899957-86175718-15115(2,6)
5.7L Bravo2002-2004OM600000 & up57-863876 618-15102(3,5,7)
5.7L Bravo2000-2004OL619000 & up57-863876 818-15104(4,7)
5.7L Ski1997-2002K040004-M31699957-807755 418-15112
377 Scorpion MCM1999-2004OL416146 & up57-86175718-15115
377 Scorpion Ski1997-1998K000656 & up57-807755 418-15112
454 Mag MPI1998-2001OL010029-OM02499957-86104918-15114(1)
454 Mag MPI1998-2001OL010029-OM02499957-863876 618-15102(2)
454 Mag MPI1998-2001OL010029-OM02499957-863876 718-15103(4)
454 Mag MPI Horizon MIE1998-2001OL002200-OL67400057-863876 718-15103
496 Mag & HO2000-2004OM025000 & up57-863876 118-15119
500 EFI1999-2004L001477 & up57-807755 418-15112
502 Mag MPI1998-2001OL017000-OM02499957-86104918-15114(1)
502 Mag MPI1998-2001OL017000-OM02499957-863876 718-15103(4)
502 Mag. MPI1998-2001OL017000-OM02499957-863876 618-15102(2)
525 EFI2003-2004OM900146 & up57-863876 218-15120
575 Sci2000-2004OL306696 & up57-807755 418-15113
7.4L MPI1998-2001OL010003-OM02433057-86104918-15114(1)
7.4L MPI1998-2001OL010003-OM02433057-863876 618-15102(2)
7.4L MPI1998-2001OL010003-OM02433057-863876 718-15103(4)
7.4L MPI MIE1998-2001OL002006-OM02599957-863876 718-15103
Black Scorpion Ski1997-2001K040001-M39159957-807755 418-15112
MX 6.2L Blk Scorpion Ski2001L670015-M39159957-807755 418-15112
MX 6.2L MPI2002-2004OM600000 & up57-863876 618-15102(3,5)
MX 6.2L MPI2000-2004OL680003 & up57-863876 818-15104(4,7)
MX 6.2L MPI Horizon2002-2004OM600000 & up57-863876 618-15102(3)
MX 6.2L MPI Horizon2001-2004OM300000 & up57-863876 818-15104(4)
MX 6.2L MPI Horizon MIE2001M300000-M31009957-807755 418-15112
MX 6.2L MPI MIE1999-2001L670000-M31009957-807755 418-15112
8.1S MPI MIE & HO2000-2004OM025000 & up57-863876 218-15120
8.2L MPI MIE1998-2001OL002450-OL67420057-863876 718-15103

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
Refine Parts List
Engine

Years

(1996 to 2004)
Serpentine Belt 26/32" Width 52" Length - Sierra
Your Price: $113.82
Save: $19.46
(14% Off $133.28)
Part # 18-15100 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
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26/32" Width, 52" Length

Replaces OEM part #
  • MERCURY MARINE 57-863876 3
Serpentine Belt 26/32" Width 37" Length - Sierra
Your Price: $89.05 (Out of stock)
Save: $5.68
(5% Off $94.73)
Part # 18-15101 ValueShip™ Eligible
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26/32" Width, 37" Length

Replaces OEM part #
  • MERCURY MARINE 57-863876 4
Belt Application
  • 4.3L Alpha (2000-04), Serial # OF803000-OL618999
    For engines with power steering, standard cooling, and high mounted alternators
Serpentine Belt 26/32" Width 51.5" Length - Sierra
Your Price: $118.16
Part # 18-15102 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
Hurry! Only 1 left in stock
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Replaces OEM part #
  • MERCURY MARINE 57-863876 6
Belt Application
  • 5.0L Bravo (2002-04), Serial # OM600000 & Up
    For engines with power steering, closed cooling, and high mounted alternators
  • 5.0L Alpha (2000-04), Serial # OL619000 & Up
    For engines with power steering, standard cooling, and high mounted alternators
  • 5.0L Alpha (2002-04), Serial # OM600000 & Up
    For engines with power steering, closed cooling, and high mounted alternators
  • 350 Mag, Alpha (2002-02), Serial # OM600000 & Up
    For engines with power steering, closed cooling, and high mounted alternators
  • 350 Mag, Bravo (2002-04), Serial # OM600000 & Up
    For engines with power steering, closed cooling, high mounted alternators
  • 5.7L Alpha (2002-04), Serial # OM600000 & Up
    For engines with power steering, closed cooling, and high mounted alternators
  • 5.7L Bravo (2002-04), Serial # OM600000 & Up
    For engines with power steering, closed cooling, and high mounted alternators
  • 454 Mag MPI (1998-01), Serial # OL010029-OM024999
    Use with metal 5-3/4" dia. p/s pump pulley
  • 502 Mag. MPI (1998-01), Serial # OL017000-OM024999
    Use with metal 5-3/4" dia. p/s pump pulley
  • 7.4L MPI (1998-01), Serial # OL010003-OM024330
    Use with metal 5-3/4" dia p/s pump pulley
  • MX 6.2L MPI (2002-04), Serial # OM600000 & Up
    For engines with power steering, and closed cooling
  • MX 6.2L MPI Horizon (2002-04), Serial # OM600000 & Up
    For engines with power steering
Serpentine Belt 26/32" Width 47.5" Length - Sierra
Your Price: $84.07
Save: $37.03
(30% Off $121.10)
Part # 18-15115 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
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Replaces O.E.#
  • Mercury Marine 57-861757
Belt Application
  • 4.3L Bravo (1996-99), Serial # OF803000-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, for engines with standard cooling
  • 5.0L Bravo (1998-99), Serial # OL012052-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, for engines with standard cooling
  • 350 Mag, Bravo (1997-04), Serial # OK001501-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, for engines with standard cooling
  • 5.7L Bravo (1997-99), Serial # OK001506-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, for engines with standard cooling
  • 377 Scorpion MCM (1999-04), Serial # OL416146 & Up
Serpentine Belt 26/32" Width 51" Length - Sierra
Your Price: $88.20 (Out of stock)
Save: $6.79
(7% Off $94.99)
Part # 18-15114 ValueShip™ Eligible
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Replaces O.E.#
  • Mercury Marine 57-861049
Belt Application
  • 4.3L Bravo (1996-99), Serial # OF803000-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, for engines with closed cooling
  • 5.0L Alpha (1998-99), Serial OL012052-OL618999
    For engines with closed cooling
  • 5.0L Bravo (1998-99), Serial # OL012052-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, for engines with closed cooling
  • 350 Mag, Alpha (1997-04), Serial # OK001501-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, For engines with closed cooling
  • 350 Mag, Bravo (1997-04), Serial # OK001501-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, for engines with closed cooling
  • 5.7L (1997-99), Serial # OK001501-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, For engines with closed cooling
  • 5.7L Bravo (1997-99), Serial # OK001506-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, For engines with closed cooling
  • 454 Mag MPI (1998-01), Serial # OL010029-OM024999
    Use with plastic 4-3/4" dia. p/s pump pulley
  • 502 Mag MPI (1998-01), Serial # OL017000-OM024999
    Use with plastic 4-3/4" dia. p/s pump pulley
  • 7.4L MPI (1998-01), Serial # OL010003-OM024330
    Use with plastic 4-3/4" dia. p/s pump pulley
Serpentine Belt 26/32" Width 48.5 Length - Sierra
Your Price: $96.41
Part # 18-15104 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 22 hrs 8 mins. Replaces OEM Part#
  • Mercury Marine 57-863876 8
  • Mercury Marine 57-863876 4
Belt Application
  • 4.3L Alpha (2000-04), Serial # OL619000 & Up
    For engines without power steering, with closed cooling, and high mounted alternators
  • 4.3L Bravo (2000-04), Serial # OL619000 & Up
    For engines without power steering, and with high mounted alternators
  • 5.0L Alpha (2001-04), Serial # OL619000 & Up
    For engines without power steering, with closed cooling, and with high mounted alternators
  • 5.0L Bravo (2000-04), Serial # OL619000 & Up
    For engines without power steering, and with high mounted alternators
  • 350 Mag, Alpha (2000-04), Serial # OL519000 & Up
    For engines without power steering, with closed cooling, and with high mounted alternators
  • 350 Mag, Bravo (2000-04), Serial # OL619000 & Up
    For engines without power steering, and with high mounted alternators
  • 5.7L Alpha (2000-04), Serial # OL619000 & Up
    For engines with power steering, standard cooling, and high mounted alternators
  • 5.7L Alpha (2000-04), Serial # OL619000 & Up
    For engines without power steering, with closed cooling, and with high mounted alternators
  • 5.7L Bravo (2000-04), Serial # OL619000 & Up
    for engines without power steering, and with high mounted alternators
  • MX 6.2L MPI (2000-04), Serial # OL680003 & Up
    For engines without power steering, and with high mounted alternator
  • MX 6.2L MPI Horizon (2001-04), Serial # OM300000 & Up
    For engines without power steering
Serpentine Belt 13/16" Width 86.75" Length - Sierra
Your Price: $69.66
Save: $29.72
(29% Off $99.38)
Part # 18-15116 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
Hurry! Only 1 left in stock
Replaces O.E.#
  • Mercury Marine 57-861758
Belt Application
  • 4.3L Alpha (1996-99), Serial # OF803000-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, For engines with standard cooling
  • 5.0L Alpha (1998-99), Serial OL012052-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, For engines with standard cooling
  • 350 Mag, Alpha (1997-04), Serial OK001501-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, For engines with standard cooling
  • 5.7L Alpha (1997-99), Serial # OK001506-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, For engines with standard cooling
Serpentine Belt 26/32" Width 53" Length - Sierra
Your Price: $80.89
Part # 18-15119 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
No Reviews | Write Review
Replaces O.E.#
  • Mercury Marine 57-863876 1
Belt Application
  • 496 Mag & HO (2000-04), Serial # OM025000 & Up
Serpentine Belt 26/32" Width 45" Length - Sierra
Your Price: $73.39
Part # 18-15117 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
Hurry! Only 1 left in stock
No Reviews | Write Review
Replaces O.E.#
  • Mercury Marine 57-861759
Belt Application
  • 4.3L Alpha (1996-99), Serial # OF803000-OL618999
    Use with metal 5-3/4" dia. p/s pump pulley, for engines with standard cooling
Serpentine Belt 26/32" Width 33.5" Length - Sierra
Your Price: $66.41 (Out of stock)
Part # 18-15105 ValueShip™ Eligible
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Replaces O.E.#
  • 57-863876 9
Belt Application4.3L Alpha (2000-04), Serial # OL619000 & Up
For engines without power steering, with standard cooling, and with high mounted alternators
  • 5.0L Alpha (2000-04), Serial # OL619000 & Up
    For engines without power steering, with standard cooling, and with high mounted alternators
  • 350 Mag, Alpha (2000-04), Serial # OL619000 & Up
    For engines without power steering, with standard cooling, and with high mounted alternators
  • 5.7L Alpha (2000-04), Serial # OL619000 & Up
    For engines without power steering, with standard cooling, and with high mounted alternators
  • Serpentine Belt 26/32" Width 36.5" Length - Sierra
    Your Price: $53.56
    Part # 18-15113 ValueShip™ Eligible
    SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
    No Reviews | Write Review
    Replaces O.E.#
    • Mercury Marine 57-807755-5
    • Mercury Marine 57-807755 4
    Belt Application
    • 4.3L Alpha (1996-99), Serial # OF803000-OL618999
      For engines without power steering
    • 5.0L Alpha (1998-99), Serial # OL012052-OL618999
      For engines without power steering, and with standard cooling
    • 350 Mag, Alpha (1997-04), Serial # OK001501-OL618999
      For engines without power steering, and with standard cooling
    • 5.7L Alpha (1997-99), Serial # OK001506-OL618999
      For engines without power steering, and with standard cooling
    • 575 Sci (2000-04), Serial # OL306696 & Up
    Serpentine Belt 26/32" Width 42.5" Length - Sierra
    Your Price: $78.01
    Save: $37.21
    (32% Off $115.22)
    Part # 18-15112 ValueShip™ Eligible
    SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
    No Reviews | Write Review
    Replaces O.E.#
    • Mercury Marine 57-807755 4
    Belt Application
    • 5.7L Ski (1997-02), Serial # K040004-M316999
    • 377 Scorpion Ski (1997-98), Serial # K000656 & Up
    • 500 EFI (1999-04), Serial # L001477 & Up
    • Black Scorpion Ski (1997-01), Serial # K040001-M391599
    • MX 6.2L Blk Scorpion Ski (2001), Serial # L670015-M391599
    • MX 6.2L MPI Horizon MIE (2001), Serial # M300000-M310099
    • MX 6.2L MPI MIE (1999-01), Serial # L670000-M310099
    Serpentine Belt 26/32" Width 47" Length - Sierra
    Your Price: $104.46
    Part # 18-15103 ValueShip™ Eligible
    SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
    No Reviews | Write Review
    Replaces O.E.#
    • Mercury Marine 57-863876 7
    • Mercury Marine 57-863876 4
    Belt Application
    • Engine 350 Mag, Alpha (2000-04), Serial # OL619000 & Up
      For engines with power steering, closed cooling, high mounted alternators
    • 454 Mag MPI (1998-01), Serial OL010029-OM024999
      For engines without power steering
    • 454 Mag MPI Horizon MIE (1998-01), Serial # OL002200-OL674000
    • 502 Mag MPI (1998-01), Serial # OL017000-OM024999
      For engines without power steering
    • 7.4L MPI (1998-01), Serial # OL010003-OM024330
      For engines without power steering
    • 7.4L MPI MIE (1998-01), Serial # OL002006-OM025999
    • 8.2L MPI MIE (1998-01), Serial # OL002450-OL674200
    Serpentine Belt 13/16" Width 87.5" Length - Sierra
    Your Price: $88.20 (Out of stock)
    Save: $6.79
    (7% Off $94.99)
    Part # 18-15121 ValueShip™ Eligible
    No Reviews | Write Review
    Replaces OEM part #
    • MERCURY MARINE 57-865615005
    • MERCURY MARINE 57-865423005
    • MERCURY MARINE 57-863876 5
    13/16" x 87.5"
    Serpentine Belt 13/16" Width 86" Length - Sierra
    Your Price: $103.39
    Part # 18-15122 ValueShip™ Eligible
    SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
    No Reviews | Write Review
    Replaces OEM part #
    • MERCURY MARINE 57-865615010
    • MERCURY MARINE 57-863876 10
    13/16" x 86"
    Serpentine Belt 13/16" Width 85" Length - Sierra
    Your Price: $100.17
    Part # 18-15123 ValueShip™ Eligible
    SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
    Hurry! Only 1 left in stock
    No Reviews | Write Review
    Replaces OEM part #
    • MERCURY MARINE 57-864639
    13/16" x 85"
    Serpentine Belt 1-1/16" Width 55.75" Length - Sierra
    Your Price: $213.21
    Part # 18-15124 ValueShip™ Eligible
    SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
    No Reviews | Write Review
    Replaces OEM part #
    • MERCURY MARINE 57-881754
    1-1/16" x 55.75"
    Serpentine Belt 1-3/8" Width 53.5" Length - Sierra
    Your Price: $288.21
    Part # 18-15125 ValueShip™ Eligible
    SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
    Hurry! Only 1 left in stock
    No Reviews | Write Review
    Replaces OEM part #
    • MERCURY MARINE 57-817113
    1-3/8" x 53.5"
    Serpentine Belt for Mercruiser - Mallory
    Your Price: $80.99
    Save: $13.40
    (14% Off $94.39)
    Part # 9-55024 ValueShip™ Eligible
    SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
    No Reviews | Write Review
    Fits: Multiple I/O applications

    Replaces: Mercruiser
    • 57-865615Q03
    (representative image only)
    Serpentine Belt for Mercruiser - Mallory
    Your Price: $63.99
    Save: $17.19
    (21% Off $81.18)
    Part # 9-55025 ValueShip™ Eligible
    SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
    Hurry! Only 1 left in stock
    No Reviews | Write Review
    Fits: Multiple I/O applications

    Replaces: Mercruiser
    • 57-865615Q04
    (representative image only)
    Serpentine Belt for Mercruiser - Mallory
    Your Price: $69.99
    Save: $27.86
    (28% Off $97.85)
    Part # 9-55026 ValueShip™ Eligible
    SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
    Hurry! Only 1 left in stock
    No Reviews | Write Review
    Fits: Multiple I/O applications

    Replaces: Mercruiser
    • 57-865615Q06
    Serpentine Belt for Mercruiser - Mallory
    Serpentine Belt for Mercruiser - Mallory
    Your Price: $62.99
    Save: $33.50
    (34% Off $96.49)
    Part # 9-55028 ValueShip™ Eligible
    SHIPS TOMORROW!* if ordered in 22 hrs 8 mins.
    Hurry! Only 1 left in stock
    No Reviews | Write Review
    Fits: Multiple I/O applications

    Replaces: Mercruiser
    • 57-865615Q10
    Sierra
    Based On 1 Review | Write Review
    The belt was the wrong size
    by William from Fort Washington, Pennsylvania on June 30, 2014
    Order the belt using the engine serial number listed on your chart and this was the wrong belt. I returned the belt several days ago and I am still waiting for my refund. I did email you the proper belt number for this engine however you have not updated your chart.
    Was this review helpful?
    Based On 1 Review | Write Review
    perfect replacement
    by Robert from Senoia, Georgia on July 09, 2014
    perfect!
    Was this review helpful?
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