Dayco 5070445 Poly Rib Serpentine Belt - 7-Rib 44.5 Inch

The Dayco 5070445 is a premium poly rib serpentine belt designed for heavy-duty automotive applications. This 7-rib belt features a 44.5-inch effective length (45.16-inch outside circumference) with a 0.96-inch top width, meeting the metric designation 7PK1130.

Advanced EPDM Construction:

Constructed with aramid-reinforced EPDM (ethylene propylene diene monomer) compounds, this serpentine belt delivers superior performance and durability. The wear-resistant EPDM rib material combined with highly elastic EPDM cushion rubber surrounds the polyamide tensile cord, providing exceptional adhesion and flexibility for lasting performance.

Key Features:

• 7-rib W profile design for optimal power transmission
• 44.5-inch effective length with 45.16-inch outside circumference
• 0.96-inch (24.90mm) top width
• Aramid-reinforced tensile cord resists stretching and ensures length stability
• Engineered to conform to high-mileage, worn, or misaligned drives
• Heat-resistant EPDM material withstands extreme temperatures
• Reduces noise and vibration from belt drive systems
• Specially treated cords resist stretching under high torque

Performance Benefits:

Developed through extensive laboratory and road testing, this belt's unique rib profile is engineered to eliminate noisy belt conditions while offering extensive flexibility and longer service life. The multi-rib design provides superior belt-to-pulley contact compared to conventional V-belts, reducing slippage and extending service life while handling higher workloads and temperature extremes.

Ideal for automotive, heavy-duty truck, and commercial vehicle accessory drive systems requiring reliable power transfer to alternators, water pumps, power steering pumps, and air conditioning compressors.