Dayco 89859 Idler Pulley Accessory Drive Belt

The Dayco 89859 is an OE-quality replacement idler pulley designed for accessory drive belt systems. Engineered to meet or exceed original equipment specifications, this pulley delivers reliable, long-lasting performance in demanding underhood environments.

Key Features:

• Precision engineering: Designed using 3D computer-aided design and finite element analysis for optimal structural integrity
• Smoother surfaces and tighter dimensional tolerances reduce vibration and extend belt life
• Premium lubricated ball bearings with double high-temperature seals ensure peak bearing performance throughout the pulley's service life
• Durable construction: Available in stamped or forged steel and glass-filled polymer options engineered to resist wear and underhood contaminants
• Meets or exceeds OE quality standards for a direct-fit, drop-in replacement

Dayco has been a trusted name in drive system components since 1905, investing over 2,500 design, development, and testing hours into their idler and tensioner pulley line. The Dayco 89859 idler pulley is a dependable solution for restoring proper serpentine belt routing and tension.