Dayco 5100710 | Serpentine Belt

Part Number
Serpentine Belt

Fits: 87-91 Ontario Bus Orion II, 99-03 Freightliner Argosy, 99-03 Freightliner FLD120, 99-02 Peterbilt 378, 99-02 Peterbilt 379, 00 Freightliner Century Class, 00 Peterbilt 377, 01-03 Freightliner Columbia, 01 Freightliner FLD132, 01-03 Mack CL, 01-02 Peterbilt 357, 01-02 Peterbilt 387, 03 Freightliner FLD132

Special Price $52.33 Regular Price $61.56
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Estimated Ship Date: 1 Business Day or Less
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 Length1804.93
Effective Length71.06
MaterialEPDM, Aramid Reinforced
Maximum Operating Temperature212
Maximum Operating Temperature100
Minimum Operating Temperature-42.7
Minimum Operating Temperature-45
Outside Circumference1820.93
Outside Circumference71.69
Rib DepthStandard
Rib ProfileStraight Rib
StandardsSAE J1459, SAE J2432
Top Width1.38



  • NAPA: 25-100710HD
  • NAPA: 25-71071
  • Dynacraft: D1102-7306
  • Cummins: 3681811
  • ACDelco: K100710HD
  • Gates: K100710
  • Gates: K100710HD
  • NAPA: 25-100710
  • Goodyear: 4100710
  • CARQUEST: K100710HD
  • CARQUEST: K100710
  • North American Bus: 020736-005-7
  • ACDelco: 10K710
  • Cummins: 3681234
  • Freshstart: 710K10


  • 2001-2002 Peterbilt 387 - Position: Fan and Water Pump
  • 2003-2003 Freightliner FLD132 - Position: Alternator and Air Conditioning
  • 2000-2000 Freightliner FLD120 - Position: Fan
  • 2001-2002 Peterbilt 378 - Position: Fan and Water Pump
  • 2001-2003 Mack CL - Position: Fan and Water Pump
  • 2001-2001 Freightliner FLD132 - Position: Alternator and Air Conditioning
  • 2000-2000 Peterbilt 377 - Position: Fan
  • 1987-1991 Ontario Bus Orion II - Position: Water Pump and Air Brake Compressor
  • 2000-2000 Freightliner Century Class - Position: Fan
  • 2001-2002 Peterbilt 379 - Position: Fan and Water Pump
  • 1999-2003 Freightliner Argosy - Position: Alternator and Air Conditioning
  • 1999-2000 Peterbilt 379 - Position: Fan
  • 1999-2000 Peterbilt 378 - Position: Fan
  • 2001-2001 Freightliner Columbia - Position: Fan and Water Pump
  • 2001-2002 Peterbilt 357 - Position: Fan and Water Pump
  • 1999-2003 Freightliner FLD120 - Position: Alternator and Air Conditioning
Customer Questions
Can a serpentine belt cause smoke?
Yes, a serpentine belt can cause smoke. A serpentine belt is an essential component of a vehicle's engine system. It drives various accessories such as the alternator, power steering pump, water pump, and air conditioning compressor. If the serpentine belt becomes worn, damaged, or misaligned, it can cause friction and generate smoke.
Why is my serpentine belt squealing?
The serpentine belt can squeal due to various reasons, including tension issues, worn-out belt, or a problem with the belt's pulleys.
Is my serpentine belt too tight?
If your serpentine belt is causing issues like excessive noise or accelerated wear on the pulleys, it may indicate that the belt is too tight.
Why did my serpentine belt come off?
Serpentine belts can come off due to factors such as belt wear, improper tension, misaligned pulleys, or a faulty tensioner.
Please, mind that only logged in users can submit questions

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