Dayco 5100655 Serpentine Belt

Part Number
Serpentine Belt

Fits: 98-99 Mack CH, 98-02 Mack CL, 98-02 Mack RB, 98-03 Mack RD, 99 Volvo VN, 00-02 Mack DM, 00-02 Mack DMM, 01-03 Mack CV, 07 Mack CV, 18 Western Star 4900SA

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The Dayco® Poly Rib® Belt is designed for power transmission on heavy duty multiple-accessory drives. This Poly Rib belt is the latest version of the revolutionary multi-ribbed belt first developed by Dayco® for the 1979 Ford® Mustang®. The Dayco® Poly Rib® Belt is manufactured from an extreme temperature EPDM rubber and features a construction that uses a highly fiber loaded compound to maximize belt life and load carrying requirements while minimizing pulley misalignment noise. This belt offers excellent resistance to high under hood temperatures and ozone contamination. In addition, specially formulated treated cord insures length and tension stability on heavy duty diesel engine drives for the life of the belt. The Dayco® Poly Rib® Belt meets or exceeds SAE J1459 and SAE J2432 specifications.

BRAND: Dayco




Cross SectionK-Section
Effective Length65.55
Effective Length1664.97
MaterialEPDM, Aramid Reinforced
Maximum Operating Temperature100
Maximum Operating Temperature212
Minimum Operating Temperature-45
Minimum Operating Temperature-42.7
Outside Circumference1680.98
Outside Circumference66.18
Rib DepthStandard
Rib ProfileStraight Rib
StandardsSAE J1459, SAE J2432
Top Width1.38

65 1/2 In. Belt



  • Mack: 88GB447P655
  • NAPA: 25-100655
  • Mack: 88GB458P657
  • Dynacraft: D1102-6360
  • CARQUEST: K100655
  • Mack: 88GB447P656
  • Volvo Cars: 981792
  • Mack: 88GB449P655
  • Cummins: 3679187
  • Volvo Cars: 981632
  • Gates: K100655HD
  • Goodyear: 4100652
  • Gates: K100655
  • ACDelco: K100655HD
  • Cummins: 3679430
  • ACDelco: 10K655
  • NAPA: 25-100655HD
  • Mack: 88GB449P657
  • Mack: 88GB458P675
  • CARQUEST: K100655HD
  • Goodyear: 4100655


  • 1999-2002 Mack CL - Position: Fan To Alternator
  • 1998-2002 Mack CL - Position: Fan and Alternator
  • 2000-2002 Mack DM - Position: Fan To Alternator
  • 2000-2002 Mack DMM - Position: Fan To Alternator
  • 1998-2003 Mack RD - Position: Fan To Alternator
  • 2007-2007 Mack CV - Position: Fan
  • 2001-2003 Mack CV - Position: Fan To Alternator
  • 1998-2002 Mack RB - Position: Fan To Alternator
  • 1998-1999 Mack CH - Position: Fan To Alternator
  • 1999-1999 Volvo VN - Position: Fan To Alternator
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