Caliso 525K6 Serpentine Belt Poly V K-Section 52.5" OAL

The Caliso 525K6 is a Poly V (K-Section) serpentine belt designed for reliable power transmission in automotive accessory drive systems. The part number decodes as follows: 525 indicates an outer length of approximately 52.5 inches, and K6 denotes a 6-rib K-section profile — the standard ribbed geometry used across the majority of modern passenger car and light truck serpentine belt applications.

Poly V (multi-rib) belts like the 525K6 are engineered to drive multiple engine accessories — including the alternator, power steering pump, air conditioning compressor, and water pump — from a single continuous loop, replacing older V-belt systems with a more compact and efficient design.

Key Features:

• K-Section (Poly V) Profile – 6-rib configuration compatible with standard K-section pulleys
• Approximate Outer Length: 52.5 inches (1333 mm)
• Rib Count: 6 ribs for positive grip and smooth, low-vibration operation
• Flexible Construction – Engineered rubber compound resists heat, oil, and ozone exposure for extended service life
• Direct Replacement – Drop-in fit for OEM serpentine belt routing systems using 6-rib K-section belts
• Cross-Reference: Compatible with FVP Poly V Belt designations using the same 525K6 sizing standard

The Caliso 525K6 serpentine belt is a dependable aftermarket replacement that meets the demands of everyday driving. Proper belt tension and pulley alignment should always be verified upon installation to ensure optimal performance and longevity.