Dayco 5061373 Serpentine Belt - Main Drive

Dayco 5061373 Serpentine Belt Overview

The Dayco 5061373 serpentine belt is built for accessory drive systems that demand stable grip, consistent tracking, and reliable operation across a wide temperature range. This black, 6-rib belt uses EPDM with aramid reinforcement for durability in demanding engine bay conditions.

It is a direct-fit serpentine belt for select Chevrolet Silverado 2500 HD and Silverado 3500 HD, as well as GMC Sierra 2500 HD and Sierra 3500 HD applications with dual alternators. If you are searching for a Dayco 5061373 serpentine belt for Silverado HD or Sierra HD dual alternator fitment, this part matches the listed main drive applications.

Key Features

• EPDM construction with aramid reinforcement for strength and wear resistance
• 6-rib K-section profile for accessory drive engagement
• Standard rib depth with straight rib profile
• Effective length: 137.32 in. (3487.93 mm)
• Outside circumference: 137.88 in. (3502.16 mm)
• Top width: 0.82 in.
• Operating temperature range: -45°F to 212°F
• Meets SAE J1459 and SAE J2432 standards

Detailed Description

Dayco 5061373 is a serpentine belt engineered for the main drive system on select 2010-2015 Chevrolet Silverado 2500 HD and Silverado 3500 HD models, plus 2010-2014 GMC Sierra 2500 HD and Sierra 3500 HD models equipped with dual alternators. The EPDM belt material is paired with aramid reinforcement to support long-term dimensional stability, while the 6-rib design helps maintain consistent contact across accessory pulleys. This part cross-references Gates K061373 and ACDelco 6K1373 for the same application.

What This Belt Helps Address

• Squealing or chirping from a worn accessory drive belt
• Cracking, glazing, or rib wear on the existing belt
• Loss of belt tracking on the main drive system
• Accessory drive performance issues related to belt stretch or age
• Service replacement for dual alternator Silverado HD and Sierra HD applications

Installation Notes and Tips

Verify pulley routing and belt length against the vehicle’s dual alternator configuration before installation. Inspect tensioners, idlers, and pulley surfaces for wear, since a new belt performs best on a clean, aligned accessory drive system. Confirm the application by year, make, model, and main drive position for the listed Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD fitments.

Quality Assurance

Dayco manufactures this belt to SAE J1459 and SAE J2432 standards, with EPDM and aramid-reinforced construction selected for accessory drive durability and temperature resistance.