Part #: 5080820

Dayco 5080820 Serpentine Belt

Main Drive
12 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Dodge, D250, D350, W250, and W350
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Durable Serpentine Belt for Dodge D250, D350, W250, and W350

The Dayco 5080820 serpentine belt is engineered to meet the demands of Dodge D250, D350, W250, and W350 models. Constructed with EPDM and aramid reinforcement, this belt offers reliable performance under a wide range of operating temperatures.

  • Material: EPDM with aramid reinforcement for enhanced durability
  • Top Width: 1.10 inches
  • Effective Length: Approximately 82.09 inches (2085.09 mm)
  • Outside Circumference: Approximately 82.72 inches (2101.09 mm)
  • Rib Quantity: 8 ribs with a straight rib profile
  • Cross Section: K-section design
  • Operating Temperature Range: -45°C to 100°C (-49°F to 212°F)
  • Complies with SAE J1459 and SAE J2432 standards

Technical Overview of Dayco 5080820 Serpentine Belt

This serpentine belt features a K-section cross section with eight straight ribs, designed to provide consistent power transmission and reduce slippage in accessory drive systems. The EPDM material combined with aramid reinforcement enhances resistance to heat, wear, and stretching, ensuring stable performance in both cold and hot environments. The belt’s dimensions, including a top width of 1.10 inches and an effective length of approximately 82 inches, are tailored for specific Dodge truck models, ensuring proper fit and function.

Compatible Vehicles and Applications

The Dayco 5080820 serpentine belt is compatible with the following Dodge models:

  • Dodge D250
  • Dodge D350
  • Dodge W250
  • Dodge W350

This belt is designed for use in accessory drive belt systems, helping to power components such as the alternator, power steering pump, and air conditioning compressor.

Common Issues Addressed by This Serpentine Belt

  • Worn or cracked belts causing slipping or noise
  • Loss of tension leading to accessory malfunction
  • Heat-related degradation reducing belt lifespan
  • Stretching or fraying affecting belt alignment
  • Failure to meet OEM specifications resulting in premature wear

Installation Notes and Tips

  • Ensure the belt routing matches the vehicle’s accessory drive diagram
  • Inspect pulleys and tensioners for wear before installation
  • Use proper tensioning tools to achieve manufacturer-recommended tension
  • Replace the belt if any signs of damage or excessive wear are present
  • Verify belt alignment to prevent premature wear or noise

Quality Assurance and Standards Compliance

The Dayco 5080820 serpentine belt meets SAE J1459 and SAE J2432 standards, ensuring it adheres to industry requirements for durability and performance. Manufactured with high-quality EPDM and aramid materials, this belt is designed to withstand operating temperatures from -45°C to 100°C (-49°F to 212°F). While specific warranty details are not provided, Dayco products typically undergo rigorous quality control to maintain consistent reliability for Dodge D250, D350, W250, and W350 vehicles.

BrandDayco
Part Number5080820
ColorBlack
Cross SectionK-Section
Effective Length82.09
Effective Length2085.09
MaterialEPDM, Aramid Reinforced
Maximum Operating Temperature100
Maximum Operating Temperature212
Minimum Operating Temperature-45
Minimum Operating Temperature-42.7
Outside Circumference82.72
Outside Circumference2101.09
Rib DepthStandard
Rib ProfileStraight Rib
Rib Quantity8
StandardsSAE J1459, SAE J2432
Top Width1.10

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1991DodgeD2505.9LL6Main Drivew/A.C., Exc. Intercooled
1991DodgeD3505.9LL6Main Drivew/A.C., Exc. Intercooled
1991DodgeW2505.9LL6Main Drivew/A.C., Exc. Intercooled
1991DodgeW3505.9LL6Main Drivew/A.C., Exc. Intercooled
1990DodgeD2505.9LL6Main DriveCompatible with vehicles containing air conditioning.
1990DodgeD3505.9LL6Main DriveCompatible with vehicles containing air conditioning.
1990DodgeW2505.9LL6Main DriveCompatible with vehicles containing air conditioning.
1990DodgeW3505.9LL6Main DriveCompatible with vehicles containing air conditioning.
1989DodgeD2505.9LL6Main DriveCompatible with vehicles containing air conditioning.
1989DodgeD3505.9LL6Main DriveCompatible with vehicles containing air conditioning.
1989DodgeW2505.9LL6Main DriveCompatible with vehicles containing air conditioning.
1989DodgeW3505.9LL6Main DriveCompatible with vehicles containing air conditioning.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

8K8178K820K080817HDK080820HD

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.