Part #: 5080780

Dayco 5080780 Serpentine Belt

Fan, Alternator and Idler, Main Drive, Fan and Alternator, Alternator, Fan, Alternator and Air Conditioning, and Fan
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Durable Dayco Serpentine Belt for Reliable Engine Performance

The Dayco 5080780 serpentine belt is engineered to provide consistent power transmission for accessory drive systems. Constructed with EPDM and aramid reinforcement, this belt offers durability and resistance to wear under various operating conditions.

  • Material: EPDM with aramid fiber reinforcement for enhanced strength
  • Top Width: 1.10 inches ensuring proper fit and tension
  • Effective Length: Approximately 78 inches (1981.20 mm) for precise compatibility
  • Rib Quantity: 8 ribs with a straight rib profile for smooth operation
  • Cross Section: K-section design optimized for accessory drive systems
  • Operating Temperature Range: -45°C to 100°C (-49°F to 212°F) suitable for diverse climates
  • Meets SAE J1459 and SAE J2432 standards for quality and performance

Technical Overview of Dayco 5080780 Serpentine Belt

This serpentine belt features a black EPDM rubber compound reinforced with aramid fibers, which improves tensile strength and resistance to heat and abrasion. The 8-rib K-section design ensures efficient power transfer to engine accessories such as the alternator, power steering pump, and air conditioning compressor. With an outside circumference of approximately 78.63 inches (1997.21 mm), the belt maintains proper tension and alignment in compatible vehicles. The rib depth and straight rib profile contribute to reduced noise and vibration during operation.

Compatible Vehicles and Common Applications

The Dayco 5080780 serpentine belt is designed for use in various automotive makes and models requiring an 8-rib, 1.10-inch wide belt with a length near 78 inches. It is commonly compatible with mid to full-size vehicles equipped with accessory drive systems that match these specifications. This belt is suitable for replacement in vehicles experiencing issues such as:

  • Slipping or squealing belts under load
  • Cracked or frayed belt surfaces
  • Loss of accessory function due to belt wear
  • Excessive belt noise or vibration
  • Overheating caused by inefficient belt operation

Installation Notes and Tips

When installing the Dayco 5080780 serpentine belt, ensure the correct routing according to the vehicle’s belt diagram. Verify the belt tension is within manufacturer specifications to prevent premature wear or slippage. Inspect pulleys and tensioners for wear or damage before installation to maintain optimal belt performance. Use proper tools to avoid damaging the belt during installation.

Quality Assurance and Standards Compliance

Dayco 5080780 serpentine belt complies with SAE J1459 and SAE J2432 standards, ensuring it meets industry requirements for durability and performance. The EPDM and aramid reinforced construction provides resistance to heat, ozone, and wear, supporting long service life. While no specific warranty information is provided, Dayco products are generally manufactured to meet rigorous quality control standards.

BrandDayco
Part Number5080780
MaterialEpdm, aramid reinforced
Top Width1.10
ColorBlack
Effective Length1981.20
Effective Length78.00
Outside Circumference1997.21
Outside Circumference78.63
Rib Quantity8
Cross SectionK-section
Maximum Operating Temperature100
Maximum Operating Temperature212
Minimum Operating Temperature-42.7
Minimum Operating Temperature-45
Rib DepthStandard
Rib ProfileStraight rib
StandardsSae j1459, sae j2432

This part fits 0 vehicles. Search below:

YearMakeModelPositionNotes

* 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:

8K780K080780HD

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