Dayco 5081325 Serpentine Belt - Main Drive
OE Quality 60-Day Returns
Dayco

Dayco 5081325 Serpentine Belt - Main Drive

Brand Dayco 5081325
Position Main Drive
Color Black
Cross Section K-Section
Effective Length 132.50
Effective Length 3365.50
Material EPDM, Aramid Reinforced
Maximum Operating Temperature 100
Maximum Operating Temperature 212
Minimum Operating Temperature -45
Minimum Operating Temperature -42.7
Outside Circumference 133.13
Outside Circumference 3381.51
Rib Depth Standard
Rib Profile Straight Rib
Rib Quantity 8
Standards SAE J1459, SAE J2432
Top Width 1.10
Fits Ford · 10 vehicles

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

8-rib design. Provides broad belt contact for steady power transfer and reduced slip.

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

Cross-references ACDelco 8K1325, ACDelco K081325HD and CARQUEST K081325 for the same application. See all 14.

$58.46Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $58.46
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Serpentine Belt options

Dayco 5081325 Serpentine Belt Overview

The Dayco 5081325 serpentine belt is built for accessory drive systems that demand stable grip and consistent power transfer. It is a fitment-specific replacement for 2003-2007 Ford F-250 Super Duty and 2003-2007 Ford F-350 Super Duty applications with dual alternator vehicles.

Made from EPDM with aramid reinforcement, this belt is engineered for durability in demanding underhood conditions. The 8-rib K-section design, straight rib profile, and black finish support reliable operation in the main drive position.

  • Part number: 5081325
  • EPDM construction with aramid reinforcement for added strength
  • 8-rib K-section profile for accessory drive engagement
  • Effective length: 132.50 in. (3365.50 mm)
  • Outside circumference: 133.13 in. (3381.51 mm)
  • Operating temperature range: -45°F to 212°F
  • Meets SAE J1459 and SAE J2432 standards
  • Compatible with Ford F-250 Super Duty and Ford F-350 Super Duty dual alternator main drive applications

Fitment Details

Fits 2003-2007 Ford F-250 Super Duty, Main Drive, dual alternator vehicles.

Fits 2003-2007 Ford F-350 Super Duty, Main Drive, dual alternator vehicles.

This part cross-references Ford OE numbers such as 3C3E-8620-BB and Motorcraft JK8-1331-A for the same application.

What This Belt Helps Address

  • Squealing or chirping from a worn accessory drive belt
  • Cracking, glazing, or rib wear on the existing serpentine belt
  • Loss of belt tension or inconsistent accessory drive performance
  • Charging issues related to dual alternator belt drive wear
  • Noise or slippage in the main drive belt path

Installation Notes and Tips

Verify the belt routing and confirm dual alternator configuration before installation. Inspect pulleys, tensioners, and idlers for wear or misalignment, since those conditions can shorten belt life. Confirm the replacement matches the required 8-rib K-section layout and the listed effective length for the vehicle.

Quality Assurance

Dayco manufactures this belt to SAE J1459 and SAE J2432 standards, using EPDM and aramid reinforcement for consistent performance in accessory drive service.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2007FordF-250 Super Duty6.0LV8Main DriveDual alternator vehicles.
2007FordF-350 Super Duty6.0LV8Main DriveDual alternator vehicles.
2006FordF-250 Super Duty6.0LV8Main DriveDual alternator vehicles.
2006FordF-350 Super Duty6.0LV8Main DriveDual alternator vehicles.
2005FordF-250 Super Duty6.0LV8Main DriveDual alternator vehicles.
2005FordF-350 Super Duty6.0LV8Main DriveDual alternator vehicles.
2004FordF-250 Super Duty6.0LV8Main DriveDual alternator vehicles.
2004FordF-350 Super Duty6.0LV8Main DriveDual alternator vehicles.
2003FordF-250 Super Duty——Main DriveDual alternator vehicles.
2003FordF-350 Super Duty——Main DriveDual alternator vehicles.
Directly replaces or cross-references 14 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 8K1325ACDelco — K081325HDCARQUEST — K081325CARQUEST — K081325HDFord — 3C3E-8620-BBFord — 3C3E-8620-BCFord — 3C3Z-8620-BBFord — 3C3Z-8620-BCFord — 6C3E-8620-BAGates — K081325Gates — K081325HDGoodyear — 4081325Motorcraft — JK8-1331-ANAPA — 25-081325