Caliso 420K4 Poly-V Serpentine Belt - 4-Rib 42.0

The Caliso 420K4 is a 4-rib Poly-V (K-section) serpentine belt designed as a reliable replacement for OEM drive belts in a wide range of automotive and light-duty applications. With a nominal outside length of 42.0 inches and a standard K-section rib profile, this belt delivers smooth, efficient power transfer from the crankshaft to engine accessories such as the alternator, power steering pump, air conditioning compressor, and water pump.

Key Features:

• Belt Type: Poly-V (Ribbed) Serpentine Belt
• Rib Profile: K-Section (standard PK industry profile)
• Number of Ribs: 4
• Nominal Outside Length: 42.0 inches (420 in tenths)
• Constructed for resistance to heat, oil, and ozone for extended service life
• Precise rib geometry ensures quiet operation and reduced vibration
• Designed to meet or exceed OEM specifications for fit and performance
• Compatible with standard K-section pulleys and tensioners

The 420K4 serpentine belt is a direct-fit replacement that helps restore proper accessory drive function. Always verify tensioner condition during installation to maximize belt service life.