Caliso 858K6 Poly-V Serpentine Belt K-Section - 6-Rib 85.8in

The Caliso 858K6 is a K-section Poly-V (micro-rib) serpentine belt designed as a reliable OEM-replacement accessory drive belt. Featuring 6 ribs and an 85.8-inch pitch length (86.55-inch outside circumference), this belt is engineered to restore proper operation of accessory drive systems including alternators, water pumps, and power steering pumps.

Key Specifications:

• Belt Type: K-Section Poly-V / Micro-Rib Serpentine Belt
• Number of Ribs: 6
• Pitch Length: 85.8 inches
• Outside Circumference: 86.55 inches
• Top Width: 0.84 inches
• Height: 0.21 inches
• Rib Pitch: 0.14 inches
• Material: Oil and heat-resistant rubber with polyester tensile member

Cross-Reference Part Numbers:

• Gates K060858
• Dayco 5060858
• NAPA 25-060858 / 25060858
• Goodyear 4060858
• Bando 6PK2179
• AC Delco 6K858

This serpentine belt is constructed with a high-modulus, low-stretch polyester tensile member for superior fatigue and shock load resistance, combined with a fiber-reinforced undercord for enhanced belt stability. The rubber compound is specially formulated for excellent oil and heat resistance, making it well-suited to demanding under-hood environments. It meets or exceeds OEM specifications including SAE J1459, SAE J2432, and SAE J1596 standards.