Dayco 5070530 Serpentine Belt - Fan and Alternator

Overview

This Dayco serpentine belt, part number 5070530, is built for accessory drive applications that require a 7-rib K-section belt. It uses EPDM with aramid reinforcement for stable operation across a wide temperature range and consistent rib engagement.

Compatible With Mercedes-Benz CLA250, CLA35 AMG, GLA250, GLA35 AMG, GLB250, and GLB35 AMG applications from 2024-2026, plus UD fan and alternator drive applications from 2011-2013. If you are replacing a worn serpentine belt on a Mercedes-Benz CLA250 or a UD 2600, 5070530 is the specified belt for these listed applications.

Key Features

• EPDM construction with aramid reinforcement for durability in accessory drive service
• 7-rib K-section profile for proper belt tracking and pulley engagement
• Straight rib design with standard rib depth
• Black finish
• Built to SAE J1459 and SAE J2432 standards
• Part number 5070530 for direct catalog identification

Detailed Description

Dayco 5070530 is a serpentine belt engineered for accessory drive systems that need a 7-rib, K-section profile. The EPDM rubber compound and aramid reinforcement help the belt maintain shape and tension under heat and cold, while the straight rib profile supports smooth operation across the pulley system. With an effective length of 52.95 inches and an outside circumference of 53.51 inches, this belt is specified for the listed Mercedes-Benz and UD applications.

This part cross-references Gates K070529HD for the same application. For buyers searching for a Mercedes-Benz CLA250 serpentine belt or a UD 3300 fan and alternator belt, part number 5070530 provides a catalog-matched replacement option.

What It Is Used For

• Replacing a worn or cracked accessory drive belt
• Restoring proper alternator and fan drive operation
• Addressing belt noise caused by glazing or rib wear
• Correcting belt tracking issues from an incorrect profile or length
• Maintaining accessory drive performance in listed Mercedes-Benz and UD applications

Installation Notes and Tips

Verify rib count, effective length, and cross section before installation. Confirm the vehicle application against the fitment list, since this belt is specific to the listed Mercedes-Benz CLA250, CLA35 AMG, GLA250, GLA35 AMG, GLB250, GLB35 AMG, and UD fan and alternator configurations. Inspect pulleys, tensioners, and idlers for wear before installing part number 5070530.

Quality Assurance

Dayco manufactures this belt to SAE J1459 and SAE J2432 standards, with EPDM and aramid reinforcement specified for accessory drive service.