Dayco 6080719 Serpentine Belt - Main Drive

Dayco 6080719 Serpentine Belt Overview

The Dayco 6080719 is a double-sided serpentine belt built for main drive applications on select BMW models. It uses EPDM construction with aramid reinforcement to support stable belt performance in demanding accessory drive systems.

Compatible with 2011-2012 BMW 740i, Main Drive, 2011-2012 BMW 740Li, Main Drive, and 2008-2010 BMW X6, Main Drive, this belt is a direct-fit option for vehicles using an 8-rib, double sided K-section design. Dayco 6080719 is also cross-referenced to BMW 11.28.7.586.901 and 11.28.7.628.279 for the same application.

Key Features

• EPDM rubber construction for heat and wear resistance
• Aramid reinforced for added tensile strength
• Double sided K-section profile for main drive routing
• 8-rib design with straight rib, double sided profile
• Black finish with standard rib depth
• Built to SAE J1459 and SAE J2432 standards
• Operating temperature range from -45°F to 212°F

Detailed Product Description

This Dayco serpentine belt is engineered for accessory drive systems that require a double-sided belt with precise length and rib geometry. With an effective length of 71.93 inches and an outside circumference of 72.93 inches, the 6080719 supports proper belt tracking and consistent engagement across the pulleys in the main drive system. It is a practical replacement choice for BMW 740i, BMW 740Li, and BMW X6 applications that call for this exact belt configuration.

The EPDM material helps the belt handle elevated underhood temperatures, while aramid reinforcement adds strength for long-term service in high-load accessory drive operation. The double sided K-section cross section and 8-rib layout are important for vehicles that rely on a specific belt path and pulley contact pattern. Dayco 6080719 is a fitment-specific serpentine belt for 2011-2012 BMW 740i, 2011-2012 BMW 740Li, and 2008-2010 BMW X6 main drive systems.

What This Belt Helps Address

• Squealing or slipping from a worn serpentine belt
• Cracking, glazing, or visible belt wear
• Loss of accessory drive performance from belt stretch
• Incorrect belt length or rib profile on the main drive system
• Noise caused by poor belt tracking or reduced pulley engagement

Installation Notes and Tips

Verify the belt routing, rib count, and effective length before installation. This belt is specified for double sided main drive applications, so confirm that the vehicle uses the correct K-section profile and 8-rib configuration. Inspect pulleys, tensioners, and idlers for wear before installing the new belt to help maintain proper tracking and service life.

Quality Assurance

Dayco manufactures this belt to SAE J1459 and SAE J2432 standards, with EPDM and aramid reinforcement selected for durability in accessory drive service. The 6080719 is built for the listed BMW applications and matches the referenced OE part numbers for the same use case.