Idler Pully 3973844

Cummins
Part# 3973844
note
Maintains belt tension and alignment in commercial truck engines.
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Description

The Cummins Idler Pulley (3973844) is a belt-driven system component that maintains proper tension and alignment of engine belts. It supports the efficient operation of accessory components by guiding the belt path and reducing wear. This pulley is essential for stable power transmission within commercial truck engines.

Key Specifications

  • Application: 4B3.9, 6B5.9, B5.9 GAS PLUS CM556, ISB5.9 CM2880 B127
  • Function: Maintains belt tension and alignment
  • Compatibility: Cummins 4B3.9, 6B5.9, B5.9 GAS, ISB5.9 series
  • Construction: Metal pulley, durable bearing assembly
  • Features: Precision-machined surfaces, robust housing, smooth rotation bearing
  • Quality: OEM Cummins 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). 

 

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More Information

Current Part# 3973844
Part# variations 3973844 CUM,
3973844CUM
Manufacturer Cummins
Warranty Standard Manufactures