Caliso 545K5 Poly-V Serpentine Belt K Section - 5-Rib 54.5

The Caliso 545K5 is a K-section Poly-V (multi-rib) serpentine belt designed for automotive accessory drive systems. Featuring 5 ribs and a 54.5-inch pitch length (55.25-inch outside circumference), this belt delivers reliable power transfer to components such as the power steering pump, A/C compressor, alternator, and water pump.

The K-section Poly-V design combines the flexibility of a flat belt with the gripping traction of multiple V-belts, resulting in efficient, low-vibration performance across a wide range of accessory drive applications. The belt is constructed with a durable rubber compound and reinforced tensile cords for long service life.

Key Specifications:

• Belt Section: K (Poly-V / Multi-Rib)
• Number of Ribs: 5
• Pitch Length: 54.5 inches
• Outside Circumference: 55.25 inches
• Top Width: 0.70 inches
• Belt Depth: 0.17 inches

Cross-Reference Part Numbers:

• Dayco: K050545
• Gates: K050545
• Napa: 25-050545 / 25050545
• Goodyear: 4050545
• Bando: 5PK1384 / 5PK1385
• Metric Equivalent: 5PK1385

This belt is a direct replacement for OEM and aftermarket serpentine belts matching the 545K5 designation. Always verify belt length, rib count, and section type before installation to ensure proper fitment.