HomeBelts and Cooling > Accessory Drive Belt System ComponentsDayco 5071000 Serpentine Belt - Main Drive
Part #: 5071000

Dayco 5071000 Serpentine Belt - Main Drive

Main Drive
⚙️ 6 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Audi and Volkswagen, A8 Quattro and Phaeton
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Durable Serpentine Belt for Audi A8 Quattro and Volkswagen Phaeton

The Dayco 5071000 serpentine belt is engineered to meet the demanding requirements of Audi A8 Quattro and Volkswagen Phaeton models. Constructed with EPDM and aramid reinforcement, this belt offers reliable performance under a wide range of operating temperatures.

  • Material: EPDM with aramid fiber reinforcement for enhanced durability
  • Top Width: 0.96 inches
  • Effective Length: 100 inches (2540 mm)
  • Outside Circumference: Approximately 100.66 inches (2556.77 mm)
  • Rib Quantity: 7 ribs with a straight rib profile
  • Cross Section: K-section design for optimal fit and function
  • Operating Temperature Range: -45°C to 212°F (-42.7°C to 100°C)
  • Complies with SAE J1459 and SAE J2432 standards

Technical Overview of Dayco 5071000 Serpentine Belt

This serpentine belt is designed with a K-section cross section and seven straight ribs, providing consistent power transmission and reduced slippage. The EPDM material combined with aramid reinforcement enhances resistance to heat, wear, and stretching, ensuring long service life. The belt’s dimensions, including a top width of 0.96 inches and an effective length of 100 inches, are tailored to fit accessory drive systems in Audi A8 Quattro and Volkswagen Phaeton vehicles. Its ability to operate efficiently within a temperature range from -45°C to 212°F makes it suitable for various driving conditions.

Compatible Vehicles and Applications

This Dayco serpentine belt is compatible with the following vehicles:

  • Audi A8 Quattro
  • Volkswagen Phaeton

It is designed to replace worn or damaged accessory drive belts, ensuring proper function of engine components such as the alternator, power steering pump, and air conditioning compressor.

Common Issues Addressed by This Serpentine Belt

  • Eliminates belt slippage and squealing noises
  • Prevents premature belt wear and cracking
  • Maintains consistent accessory drive performance
  • Reduces risk of belt failure under extreme temperatures
  • Ensures proper tension and alignment in the accessory drive system

Installation Notes and Tips

When installing the Dayco 5071000 serpentine belt, ensure the belt routing matches the vehicle’s accessory drive diagram. Inspect pulleys and tensioners for wear or damage before installation. Proper tensioning is critical to avoid premature belt wear or noise. It is recommended to replace the belt tensioner and idler pulleys if they show signs of wear during belt replacement.

Quality Assurance and Warranty

Dayco serpentine belts are manufactured to meet SAE J1459 and SAE J2432 standards, ensuring reliable performance and durability. The 5071000 part number undergoes rigorous quality control to maintain consistent dimensions and material integrity. While specific warranty details may vary, Dayco products typically come with a limited warranty against defects in materials and workmanship.

BrandDayco
Part Number5071000
ColorBlack
Cross SectionK-Section
Effective Length100.00
Effective Length2540.00
MaterialEPDM, Aramid Reinforced
Maximum Operating Temperature100
Maximum Operating Temperature212
Minimum Operating Temperature-45
Minimum Operating Temperature-42.7
Outside Circumference100.66
Outside Circumference2556.77
Rib DepthStandard
Rib ProfileStraight Rib
Rib Quantity7
StandardsSAE J1459, SAE J2432
Top Width.96

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2006AudiA8 Quattro4.2LV8Main Drive
2006VolkswagenPhaeton4.2LV8Main Drive
2005AudiA8 Quattro4.2LV8Main Drive
2005VolkswagenPhaeton4.2LV8Main Drive
2004AudiA8 QuattroMain Drive
2004VolkswagenPhaeton4.2LV8Main Drive

* 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:

077.903.137AE

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