Caliso 425K7 Poly V Serpentine Belt K-Section Pitch Length - 7-Rib 42.5

The Caliso 425K7 is a K-section Poly V serpentine belt featuring 7 ribs and a 42.5-inch pitch length (43.13-inch outside length). Also known as a Micro-Rib or Multi-V belt, it is an industry-standard 7PK1080 metric equivalent designed for reliable power transmission across automotive and industrial accessory drive systems.

Poly V belts use longitudinal V-shaped ribs that seat precisely into matching grooves on the pulley sheaves, delivering superior grip and smooth, efficient power transfer. This design allows the belt to handle higher tension loads in a more compact package compared to traditional V-belts, making it a common choice for serpentine accessory drive applications.

Key Specifications:

• Belt Type: K-Section Poly V (Micro-Rib / Multi-V)
• Number of Ribs: 7
• Pitch Length: 42.5 inches (1080mm)
• Outside Length: 43.13 inches
• Rib Pitch Width: 0.14 in / 3.56mm
• Metric Cross Reference: 7PK1080
• Construction: Polyester tensile cord reinforcement

The 425K7 is a widely cross-referenced belt size compatible with multiple OEM and aftermarket applications. Its polyester cord construction resists stretching and maintains consistent tension throughout its service life, helping to protect accessory components from slippage and premature wear.