Dayco 5061420 Serpentine Belt - Main Drive

Dayco 5061420 Serpentine Belt Overview

The Dayco 5061420 serpentine belt is a K-section, 6-rib accessory drive belt built for main drive applications that require a 142-inch belt length. It uses EPDM construction with aramid reinforcement for consistent belt tracking and durability in demanding engine accessory systems.

Compatible with select Chevrolet Silverado 2500 HD, Silverado 3500 HD, Silverado 2500 HD Classic, Silverado 3500 Classic, Silverado 3500, GMC Sierra 2500 HD, Sierra 3500 HD, Sierra 2500 HD Classic, and Sierra 3500 Classic applications with an add-on hydraulic pump and single alternator setup.

Key Features

• Dayco serpentine belt, part number 5061420
• EPDM rubber construction with aramid reinforcement
• 6-rib design with straight rib profile
• Top width: 0.82 in.
• Effective length: 142.01 in. / 3607.06 mm
• Outside circumference: 142.57 in. / 3621.28 mm
• Black finish for standard accessory drive routing
• Built to SAE J1459 and SAE J2432 standards
• Operating temperature range: -45°F to 212°F

Detailed Description

Dayco 5061420 is a serpentine belt for accessory drive systems that use a K-section, 6-rib layout and a 142-inch belt length. The EPDM compound is paired with aramid reinforcement to support stable belt performance in high-load engine accessory drives, while the straight rib profile helps maintain consistent contact across pulleys. This belt is a direct match for main drive applications listed for Chevrolet Silverado and GMC Sierra heavy-duty trucks with an add-on hydraulic pump and single alternator configuration.

This part cross-references Gates K061420 and CARQUEST K061420 for the same application.

What This Belt Helps Address

• Squealing or chirping from a worn serpentine belt
• Cracking, glazing, or rib wear on the accessory drive belt
• Loss of proper drive to alternator and hydraulic pump accessories
• Belt tracking issues caused by incorrect length or rib count
• Reduced accessory drive reliability in high-mileage truck applications

Installation Notes and Tips

Verify the vehicle’s accessory layout before ordering, since this belt is listed for main drive systems with an add-on hydraulic pump and single alternator. Confirm the rib count, effective length, and outside circumference against the existing belt or service information before installation. Inspect pulleys, tensioners, and idlers for wear so the new belt can track correctly on the Chevrolet Silverado 2500 HD, Silverado 3500 HD, and GMC Sierra 2500 HD applications listed.

Quality Assurance

Dayco manufactures this belt to SAE J1459 and SAE J2432 standards, with EPDM and aramid-reinforced construction specified for accessory drive service. The part number is 5061420.