Dayco 6080719 Serpentine Belt - Main Drive

Durable Serpentine Belt for BMW 740i, 740Li, and X6

The Dayco 6080719 serpentine belt is engineered to meet the demanding requirements of BMW vehicles including the 740i, 740Li, and X6 models. Constructed with EPDM and aramid reinforcement, this belt offers reliable performance under a wide range of operating conditions.

• Material: EPDM with aramid fiber reinforcement for enhanced durability
• Top Width: 1.10 inches
• Effective Length: Approximately 71.93 inches (1827.03 mm)
• Outside Circumference: Approximately 72.93 inches (1852.43 mm)
• Rib Quantity: 8 ribs with a double-sided K-section cross section
• Rib Profile: Straight rib, double sided for consistent grip
• Operating Temperature Range: -45°C to 100°C (-49°F to 212°F)
• Standards Compliant: SAE J1459 and SAE J2432

Technical Overview of Dayco 6080719 Serpentine Belt

This serpentine belt is designed with a double-sided K-section cross section and eight ribs, providing stable power transmission and resistance to slippage. The EPDM material combined with aramid reinforcement enhances tensile strength and extends belt life, especially under high temperature and stress conditions. The belt’s effective length and outside circumference are precisely engineered to fit BMW 740i, 740Li, and X6 accessory drive systems, ensuring proper tension and alignment.

Compatible BMW Models and Applications

The Dayco 6080719 serpentine belt is compatible with the following BMW models:

• BMW 740i
• BMW 740Li
• BMW X6

This belt is intended for use in the accessory drive belt system, responsible for driving 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 power to accessory components
• Overheating due to belt failure
• Reduced engine efficiency from improper belt tension
• Premature belt wear from substandard materials

Installation Notes and Tips

Ensure the belt routing matches the vehicle’s accessory drive diagram before installation. Check pulleys and tensioners for wear or damage to prevent premature belt failure. Proper tensioning is critical; use a belt tension gauge if available. Inspect the belt periodically for signs of wear or damage to maintain optimal performance.

Quality Assurance and Standards Compliance

The Dayco 6080719 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 reinforcement, this belt is designed to withstand temperature extremes from -45°C to 100°C (-49°F to 212°F). While no specific warranty information is provided, Dayco products are generally recognized for consistent quality in automotive applications.