Dayco Poly-V Belt - 4PK0940
The Dayco 4PK0940 Poly-V Belt represents over 40 years of innovation since Dayco developed the first Polyrib belt for the Ford Mustang in 1979. This premium serpentine belt features a 4-rib configuration with 940mm effective length, designed to meet the demanding requirements of modern automotive accessory drive systems.
Key Features
Advanced W Profile Technology
- Most innovative advancement in serpentine belt design in over 25 years
- Unique rib profile EPDM construction engineered to conform to high mileage, worn or misaligned drives
- Eliminates noisy belt conditions through superior engineering
Superior Construction
- Aramid reinforced EPDM compounds exceed Original Equipment specifications
- Rubber impregnated fabric backing maximizes load carrying capability
- Multiple rib and flat design provides better belt-to-pulley contact than conventional V-belts
- Grooved design provides flexural stress relief for increased flexibility in both normal and backside bending
Performance Benefits
- Reduces slippage compared to traditional V-belts
- Eliminates the need for belt matching
- Allows controlled slippage in overload situations (such as A/C compressor engagement)
- Less susceptible to environmental factors including dust and splash-induced slip
- Minimizes noise compared to competitor belts
- Cord treated with specially formulated treatment ensuring length and belt stability
Technical Specifications
- Ribs: 4
- Effective Length: 940mm (37 inches)
- Outside Circumference: 958.85mm
- Top Width: 14.2mm (0.56 inches)
- Belt Depth: 4.318mm (0.17 inches)
- Belt Section: 4/K
- Construction: EPDM with aramid reinforcement
Engineered for high mileage performance against the demanding drives found in modern vehicles, this belt sets the industry standard for reliability and longevity.