Automatic Belt Tensioners, No Slack 89478

positive OEM
Dayco
Part# 89478
note
OLD# DCO 89409
Automatic Belt Tensioners, No Slack 89478 - Dayco
Automatic serpentine belt tensioner maintaining no slack in cooling systems.
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Description

The Dayco Automatic Belt Tensioner No Slack (DCO 89478) is a mechanical component designed to maintain consistent tension on serpentine belts in engine cooling systems. It automatically adjusts to eliminate slack, ensuring proper belt alignment and operation under varying load conditions.

Key Specifications

  • Application: Cooling system belt tensioning
  • Function: Maintains serpentine belt tension automatically
  • Compatibility: Heavy-duty trucks, commercial vehicles
  • Construction: Metal housing, steel pulley
  • Features: Counterclockwise rotation, 1 pulley, non-grooved pulley, 1.55 in pulley width, 2.91 in pulley diameter
  • Quality: Aftermarket Dayco part

Shipping Info

Next Day Air services are available for In Stock items. Our shipping cutoff time is Monday - Friday 4:30pm Eastern Standard Time (EST). 

 

For more shipping information, please see our Shipping & Delivery page.

More Information

Current Part# 89478
Old Part No.: DCO 89409
Type OEM
Part# variations 89478 DYC,
89478DYC,
DCO 89478,
DCO89478
Manufacturer Dayco
Warranty Standard Manufactures