Caliso 685K4 Poly-V Serpentine Belt - 4-Rib 68.58in

The Caliso 685K4 is a 4-rib Poly-V serpentine belt engineered as a direct-fit replacement for automotive and light-duty accessory drive systems. With an effective length of 68.58 inches and a top width of 0.56 inches, this K-section belt is built to OEM dimensional tolerances for a precise, rattle-free fit.

Key Features:

• Belt Type: Poly-V (K-Section) Serpentine Belt
• Number of Ribs: 4
• Effective Length: 68.58 in (1,742 mm)
• Outside Circumference: 69.125 in (1,755 mm)
• Top Width: 0.56 in (14 mm)
• Constructed from durable rubber compound for heat, oil, and wear resistance
• Cross-references: K040685, 4PK1740, 5040685, K40685, 4040685, 4PK1742

The 685K4 serpentine belt drives critical engine accessories including the alternator, power steering pump, water pump, and air conditioning compressor from a single continuous loop. Its Poly-V ribbed design provides high-grip surface contact, reduced slip, and consistent power transfer across all driven pulleys. This belt is a widely recognized part number stocked by multiple manufacturers and is suitable for use wherever the 685K4 interchange applies.