Dayco 5120858 Heavy Duty Poly Rib Serpentine Belt - 85.83 12-Rib

The Dayco 5120858 Poly Rib Gold Label serpentine belt is engineered for heavy-duty vehicles and buses with multiple accessory drives. Measuring 85.83 inches in length with 12 ribs and 1.66 inches in width, this belt delivers reliable power transmission to alternators, power steering pumps, air conditioning compressors, and water pumps in demanding commercial applications.

Key Features:

• Constructed from extreme temperature EPDM rubber compounds designed to resist cracking and withstand temperatures up to 266°F (130°C)
• Specially formulated treated cord construction ensures length and tension stability throughout the belt's service life
• Highly fiber-loaded compound maximizes belt life and load carrying capacity while minimizing pulley misalignment noise
• Grooved rib design runs cooler, operates quieter, and provides superior grip with minimal slippage
• Engineered to handle high torque and power pulse applications on heavy-duty diesel engines
• Meets and exceeds SAE J1459 and SAE J2432 specifications for commercial vehicle applications

Specifications:

• Belt Length: 85.83 inches (2180mm)
• Belt Width: 1.66 inches
• Belt Thickness: 0.17 inches
• Number of Ribs: 12
• Construction: EPDM with aramid reinforcement

This Gold Label belt is designed for commercial trucks and buses operating in severe-duty conditions, providing excellent resistance to heat, ozone contamination, and the demanding requirements of multiple accessory drives. Backed by Dayco's century of engineering excellence in drive system components.