Shaft-Idler 3689403

positive OEM
Cummins
Part# 3689403
note
Engine idler shaft supporting timing belt tension and alignment.
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Extended Lead Time
non-returnable Non-returnable info
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Description

The Cummins OEM Idler Shaft (3689403) is a critical engine component that supports the timing belt or chain, maintaining proper tension and alignment within the engine assembly. It facilitates smooth operation of the timing system by providing a stable rotational axis for the belt or chain drive.

Key Specifications

  • Application: Heavy-duty diesel engines
  • Function: Supports timing belt or chain tension
  • Compatibility: Cummins engine series
  • Construction: Steel shaft with precision machining
  • Features: Balanced design, corrosion-resistant finish
  • Quality: OEM 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# 3689403
Type OEM
Part# variations 3689403 CUM,
3689403CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty