Dayco 5080635 Serpentine Belt

Part Number
Serpentine Belt

Fits: 97-00 Blue Bird All American RE, 98-99 Freightliner FL50, 98-99 Freightliner FL60, 98-99 Freightliner FL70, 98-99 Freightliner FL80

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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 Length1614.94
Effective Length63.58
MaterialEPDM, Aramid Reinforced
Maximum Operating Temperature212
Maximum Operating Temperature100
Minimum Operating Temperature-45
Minimum Operating Temperature-42.7
Outside Circumference1630.94
Outside Circumference64.21
Rib DepthStandard
Rib ProfileStraight Rib
StandardsSAE J1459, SAE J2432
Top Width1.10



  • Case Tractor: J911584
  • Komatsu: 6732-81-3330
  • Cummins: 5256261
  • John Deere: R135438
  • ACDelco: 8K635
  • John Deere: R123451
  • Freshstart: 635K8
  • Goodyear: 4080635
  • Navistar: 1847515C1
  • John Deere: R123308
  • John Deere: J911566
  • John Deere: R517554
  • John Deere: R500377
  • Case Tractor: J903100
  • CARQUEST: K080635
  • NAPA: 25-080635
  • Gates: K080635
  • General Motors: 3911566
  • Dynacraft: D1102-7384
  • John Deere: 208837
  • John Deere: R500383
  • Cummins: 3289001
  • NAPA: 25-78635
  • John Deere: N410094
  • Komatsu: 6743-62-3710
  • Cummins: 3903100
  • John Deere: 208839
  • Komatsu: 1257765H1
  • Komatsu: 1240205H1
  • John Deere: T227665
  • John Deere: R123463


  • 1998-1999 Freightliner FL70 - Position: Main Drive
  • 1997-2000 Blue Bird All American RE - Position: Main Drive
  • 1998-1999 Freightliner FL50 - Position: Main Drive
  • 1998-1999 Freightliner FL80 - Position: Main Drive
  • 1998-1999 Freightliner FL60 - Position: Main Drive
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