Dayco 5080740 Serpentine Belt
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Dayco

Dayco 5080740 Serpentine Belt

Brand Dayco 5080740
Position Fan, Alternator and Idler, Main Drive, Fan and Alternator, Water Pump, Fan, Alternator and Air Conditioning, Fan To Alternator, Alternator, and Air Conditioning
Material Epdm, aramid reinforced
Top Width 1.10
Color Black
Effective Length 1880.11
Effective Length 74.02
Outside Circumference 1895.86
Outside Circumference 74.64
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.

8-rib design. Delivers dependable grip for accessory drive systems.

SAE compliant. Built to meet J1459 and J2432 standards.

Cross-references ACDelco 8K738, ACDelco 8K740 and CARQUEST K080738 for the same application. See all 46.

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Dayco 5080740 Serpentine Belt Overview

The Dayco 5080740 serpentine belt is an 8-rib accessory drive belt built with EPDM and aramid reinforcement for dependable belt tracking and wear resistance. It is sized for applications that call for a 74.02 in effective length and 74.64 in outside circumference, with a K-section profile and straight rib design.

Compatible With Cummins, Freightliner, John Deere, Navistar, and White applications, this belt is a direct replacement choice for accessory drive systems that need consistent grip across pulleys. The Dayco 5080740 is also cross-referenced to common OE and aftermarket numbers such as Gates K080740 and ACDelco 8K740 for the same application.

  • Part number: 5080740
  • EPDM construction with aramid reinforcement for added strength
  • 8-rib, K-section serpentine belt design
  • Black belt with straight rib profile
  • Effective length: 74.02 in (1880.11 mm)
  • Outside circumference: 74.64 in (1895.86 mm)
  • Top width: 1.10 in
  • Operating temperature range: -45°F to 212°F
  • Built to SAE J1459 and SAE J2432 standards

Detailed Product Description

Dayco 5080740 is an accessory drive serpentine belt engineered for engines that rely on a multi-rib belt to drive accessories such as the alternator, power steering pump, water pump, and air conditioning compressor. The EPDM rubber compound is paired with aramid reinforcement to support stable tension retention and long service life in demanding underhood conditions. Its 8-rib layout and straight rib profile help maintain pulley contact and reduce slippage in properly matched systems.

This belt is a strong fitment-based search match for Cummins serpentine belt replacement, Freightliner accessory drive belt replacement, and John Deere belt applications where the specified dimensions and rib count are required. It also appears in interchange listings for Navistar and White equipment, making the Dayco 5080740 a practical reference when matching OE-style belt dimensions.

What This Belt Helps Address

  • Squealing or slipping accessory drive belts
  • Cracking, glazing, or visible belt wear
  • Loss of accessory drive performance from belt stretch
  • Incorrect belt length or rib count during replacement
  • Noise caused by a worn serpentine belt in Cummins, Freightliner, or John Deere applications

Installation Notes and Tips

Verify rib count, effective length, and outside circumference before installation. Confirm pulley alignment and inspect tensioner and idler pulleys for wear, since a new belt will not correct mechanical issues in the drive system. Match the belt profile to the original application requirements, especially on Cummins, Freightliner, and John Deere equipment where belt dimensions are critical.

For best results, compare the removed belt to Dayco 5080740 and confirm the OE or cross-reference number before installation. This part cross-references Gates K080740 and ACDelco 8K740 for the same application.

Quality Assurance

Dayco manufactures accessory drive components to meet SAE J1459 and SAE J2432 standards. The 5080740 serpentine belt uses EPDM and aramid reinforcement for durability in a wide operating temperature range, from -45°F to 212°F.

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 46 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 8K738ACDelco — 8K740CARQUEST — K080738CARQUEST — K080738HDCARQUEST — K080740CARQUEST — K080740HDCummins — 1373323Cummins — 3288461Cummins — 3289569Cummins — 3289582Cummins — 3290148Cummins — 3943348Cummins — 4022716Cummins — 5256756Dynacraft — D84-1000-1081880Dynacraft — D84-1000-3081880Dynacraft — D1102-6631Dynacraft — D1102-6961Dynacraft — D1108-4864Dynacraft — D1108-5957Freightliner — 01-23415-011Freightliner — 01-23415-045Freightliner — 01-23415-047Freightliner — 01-27110-005Freightliner — 6B1997043Freightliner — GT4080740Gates — K080738Gates — K080738HDGates — K080740Gates — K080740HDGeneral Motors — 3945822Goodyear — 4080740John Deere — R108841John Deere — R133697John Deere — R183924John Deere — T160036NAPA — 25-080738NAPA — 25-080738HDNAPA — 25-080740NAPA — 25-080740HDNAPA — 25-78074Navistar — 1661787-C1Navistar — 1822500-C1Navistar — 1822800-C1Navistar — 3578998-C1White — 20804-0014