Caliso 663K7 Poly-V Serpentine Belt 7-Rib 66.3 Inch K-Series

The Caliso 663K7 is a K-series Poly-V serpentine belt designed as a direct-fit replacement for accessory drive systems. Featuring 7 ribs and an outside length of approximately 66.3 inches (1684mm), this belt is engineered to deliver reliable power transmission to engine-driven accessories such as the alternator, power steering pump, and air conditioning compressor.

Key Features:

• 7-Rib K-Series (Poly-V) design for efficient, quiet power transfer
• Approximately 66.3-inch effective length — metric equivalent 7PK1684
• Top width of approximately 24mm (15/16 inch) for a precise, secure fit
• EPDM rubber construction for excellent resistance to heat, ozone, and wear
• Engineered to meet or exceed OEM specifications for accessory drive systems
• Compatible with cross-reference part numbers including K070663, 7K663, 25-070663, and 31110-R5A-A01

The 663K7 serpentine belt is a trusted replacement for maintaining proper tension and function in the accessory drive system. Replacing a worn or cracked serpentine belt at recommended intervals helps prevent unexpected accessory failure and preserves engine efficiency.