Wiring Harness 3977157

positive OEM
Cummins
Part# 3977157
note
Electrical harness connecting alternator and sensors in commercial trucks.
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Description

The Cummins Alternator Wiring Harness (3977157) is an electrical assembly that connects the alternator and various sensors to the vehicle’s power system. It facilitates the distribution of electrical power and signals within commercial trucks, ensuring stable operation of engine electrical components.

Key Specifications

  • Application: Tier 3 5.9L ISB/QSB engines
  • Function: Connects alternator and sensors to power system
  • Compatibility: Commercial trucks, heavy-duty engines
  • Construction: Insulated copper wires, protective sheathing
  • Features: Corrosion-resistant connectors, grounding wires, protective housing
  • 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). 

 

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

More Information

Current Part# 3977157
Type OEM
Part# variations 3977157 CUM,
3977157CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty