Caliso 880K4 Poly V Serpentine Belt K-Section - 4-Rib 880mm

The Caliso 880K4 is a K-section Poly-V (Micro-V) serpentine belt featuring 4 ribs and an 880mm (35.25 in) outside circumference. Also referenced as 4PK880 in metric designation, this belt is engineered for reliable power transmission across multiple accessory drives in automotive and light industrial applications.

K-section Poly-V belts deliver superior performance over traditional V-belts by using a flat ribbed profile that maximizes contact surface area with the pulley, reducing slip and improving energy transfer efficiency. The belt's compact, flexible design allows it to navigate tight pulley arrangements while maintaining consistent tension throughout the drive system.

Key Features:

• Belt Section: K (PK) — 3.56mm rib pitch, approx. 3.3mm rib depth
• Number of Ribs: 4
• Outside Circumference: 880mm (35.25 in)
• Top Width: 14mm (0.56 in)
• Belt Depth: approx. 4.3mm (0.17 in)
• EPDM rubber construction resists heat, oil, and wear
• High-strength polyester tensile cords for minimal stretch and long service life
• Precision-ribbed profile for low-noise, high-grip pulley engagement
• Flexible design accommodates slight pulley misalignment

The Caliso 880K4 Poly-V belt is a direct cross-reference replacement for all 4PK880 applications and is suitable for use wherever a K-section, 4-rib, 880mm serpentine belt is specified.