Dayco 5050310 Serpentine Belt - Air Conditioning or Power Steering

Dayco 5050310 Serpentine Belt Overview

The Dayco 5050310 serpentine belt is built for accessory drive applications that demand stable grip, consistent tracking, and reliable operation across a wide temperature range. Made from EPDM with aramid reinforcement, it is engineered for the accessory drive belt system on select BMW M6 and Toyota Corolla applications.

With a 5-rib K-section profile, straight rib design, and black EPDM construction, this belt is specified for dependable power transfer to driven accessories. The Dayco 5050310 also cross-references Cummins 218421 and Toyota 99365-00780 for the same application.

Key Features

• EPDM construction with aramid reinforcement for durability in accessory drive service
• 5-rib K-section design for proper belt tracking and contact
• 31.00 in. effective length and 31.66 in. outside circumference
• Straight rib profile with standard rib depth
• Operating temperature range from -45°F to 212°F
• Built to SAE J1459 and SAE J2432 standards
• Dayco 5050310 part number for direct identification

Detailed Description

Dayco 5050310 is a serpentine belt for accessory drive belt system applications where consistent tension transfer and rib engagement matter. The EPDM rubber compound helps resist heat and wear, while aramid reinforcement adds strength for demanding engine bay conditions. Its 5-rib K-section layout supports smooth operation in compact accessory drive routing, and the straight rib profile helps maintain contact across the pulley surfaces.

Compatible With 2012-2018 BMW M6, Air Conditioning and 2014-2018 BMW M6 Gran Coupe, Air Conditioning. It also fits 1985 Toyota Corolla, Power Steering, and 1984-1985 Toyota Corolla, Air Conditioning, without power steering. For buyers searching for a BMW M6 serpentine belt or a Toyota Corolla accessory drive belt, the Dayco 5050310 provides a direct-fit reference by part number and application.

What This Belt Helps Address

• Squealing or slipping caused by a worn accessory drive belt
• Cracking, glazing, or rib wear on the existing belt
• Loss of proper drive to air conditioning or power steering accessories
• Incorrect belt length or rib count during replacement
• Reduced belt stability in heat-cycled engine compartments

Installation Notes and Tips

Verify pulley alignment, belt routing, rib count, and effective length before installation. Confirm whether the vehicle uses the air conditioning or power steering application listed in the fitment data, since the Toyota Corolla coverage varies by configuration. Inspect idlers, tensioners, and accessory pulleys for wear before installing the new belt to help maintain proper tracking.

Quality Assurance

This belt is manufactured to SAE J1459 and SAE J2432 standards and uses EPDM with aramid reinforcement for consistent accessory drive performance. The Dayco 5050310 is specified for the listed BMW M6 and Toyota Corolla applications and is identified by the Dayco part number for accurate ordering and service matching.