Dayco 5080690 Serpentine Belt
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Dayco

Dayco 5080690 Serpentine Belt

Brand Dayco 5080690
Position Fan To Alternator, Fan, Alternator, Fan, Alternator and Water Pump, Main Drive, Fan and Alternator, and Alternator and Water Pump
Material Epdm, aramid reinforced
Top Width 1.10
Color Black
Effective Length 1754.89
Effective Length 69.09
Outside Circumference 1770.89
Outside Circumference 69.72
Rib Quantity 8
Cross Section K-section
Maximum Operating Temperature 100
Maximum Operating Temperature 212
Minimum Operating Temperature -42.7
Minimum Operating Temperature -45
Rib Depth Standard
Rib Profile Straight rib
Standards Sae j1459, sae j2432
Fits —

Aramid reinforced. EPDM construction helps resist wear and heat in demanding accessory drive systems.

Straight rib profile. Promotes smooth, efficient power transfer with an 8-rib design.

SAE compliant. Built to meet SAE J1459 and SAE J2432 standards.

Cross-references ACDelco 8K690, ACDelco K080690HD and CARQUEST K080690 for the same application. See all 39.

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Dayco 5080690 Serpentine Belt Overview

The Dayco 5080690 serpentine belt is a K-section accessory drive belt built for demanding engine accessory systems. It uses EPDM with aramid reinforcement for durable flex life, stable rib tracking, and consistent operation across a wide temperature range.

Compatible With heavy-duty and commercial applications that use an 8-rib, 69.09-inch effective length belt, this Dayco serpentine belt is a direct replacement option for vehicles and equipment calling for Dayco 5080690 or equivalent cross-reference numbers.

Key Features

  • EPDM construction with aramid reinforcement for strength and wear resistance
  • 8-rib K-section profile for accessory drive belt systems
  • 69.09 in. effective length and 69.72 in. outside circumference
  • 1.10 in. top width with straight rib profile
  • Black finish with standard rib depth
  • Operating temperature range from -45°F to 212°F
  • Built to SAE J1459 and SAE J2432 standards

Detailed Description

Dayco 5080690 is a serpentine belt engineered for accessory drive systems that require an 8-rib K-section belt with a 1754.89 mm effective length. The EPDM compound helps maintain flexibility and resistance to heat cycling, while aramid reinforcement adds tensile stability for consistent belt tracking under load. This makes it a practical replacement for applications such as Freightliner, Volvo, Cummins, and Navistar equipment where the specified belt dimensions and rib count match.

This part cross-references Gates K080690 and ACDelco 8K690 for the same application. When servicing belt-driven accessories on compatible Freightliner or Volvo platforms, verify rib count, length, and section profile against the original belt before installation. The Dayco 5080690 part number is also commonly searched as a replacement serpentine belt for commercial truck and industrial engine accessory drive systems.

What This Belt Helps Address

  • Squealing or slipping from a worn accessory drive belt
  • Cracking, glazing, or rib wear on the existing belt
  • Loss of stable drive to alternator, water pump, or other belt-driven accessories
  • Incorrect belt length or rib count after prior replacement
  • Heat-related belt deterioration in demanding operating conditions

Installation Notes and Tips

Confirm the original belt’s rib count, effective length, and cross section before ordering. Inspect pulleys, tensioners, and idlers for wear or misalignment before installing the new belt, since pulley condition affects belt tracking and service life. For fitment-based searches, this belt is commonly referenced for Freightliner and Volvo applications, including models that specify Dayco 5080690 or equivalent 8-rib K-section belts.

Quality Assurance

This Dayco serpentine belt is manufactured to SAE J1459 and SAE J2432 standards for accessory drive belt performance. Its EPDM and aramid-reinforced construction supports consistent operation across a broad temperature range in commercial and heavy-duty service.

Related reading

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 39 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 8K690ACDelco — K080690HDCARQUEST — K080690CARQUEST — K080690HDCarrier Transicold — CTC20-78-1067Case — J905872Case — J911581CNH — 00181970Cummins — 3289235Cummins — 3289930Cummins — 3290136Cummins — 3905872Cummins — 3911581Cummins — 3955378Cummins — 5256750Cummins — MCA244-ADriveworks — 690K8Duralast — 690K8Dynacraft — D1102-6663Freightliner — GT4080690Gates — K080690Gates — K080690HDGoodyear — 4080690John Deere — R135592John Deere — R502476John Deere — T190809Komatsu — 6732-81-3571Mack — 88GB444P690NAPA — 25-080690NAPA — 25-080690HDNAPA — 25-78069Navistar — 144671-A1Navistar — 1830557C1Navistar — 1830727-C1Navistar — 1830727-C2Navistar — 1841561-C1Navistar — 3543928C1Volvo — 8087428Volvo — 20430614