Dayco 5050745 Poly Cog Serpentine Belt - 5-Rib 74.5 Inch

The Dayco 5050745 Poly Cog serpentine belt is engineered for high-performance engine accessory drives in passenger cars and light-duty trucks. This 5-rib belt measures 74.5 inches in length and features Dayco's innovative grooved cog design that delivers superior cooling, reduced noise, and extended service life.

Key Features:

• Transverse groove design runs up to 50°F cooler and reduces rib cracking
• Aramid-reinforced EPDM compound resists cracking in extreme temperatures
• Grooved design provides flexural stress relief for improved flexibility
• Polyester cord construction ensures length and tension stability
• Computer-designed cog placement eliminates harmonic squeal
• Meets or exceeds SAE J1459 and J1596 specifications
• 0.688-inch belt width for reliable power transmission

The Poly Cog design increases belt life by at least 40% compared to conventional serpentine belts while maintaining load-carrying capacity equal to or better than standard multi-rib belts. The specially treated cord construction resists stretching and maintains proper tension throughout the belt's service life, making this an ideal replacement for power steering, alternator, air conditioning, and water pump drives.