Wiring Harness 3999669

positive OEM
Cummins
Part# 3999669
note
OLD# 3976333
Electrical wiring assembly for power and signal distribution in engines.
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Extended Lead Time
non-returnable Non-returnable info
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Description

The Genuine Cummins Wiring Harness (3999669) is an electrical assembly that routes power and signals between engine control units and various electrical components. It serves as a critical conduit for electrical connectivity, ensuring organized and protected transmission of electrical signals within commercial vehicle systems.

Key Specifications

  • Application: QSB5.9 CM850, QSC8.3 CM850, QSM11 CM570 engines
  • Function: Electrical power and signal distribution
  • Compatibility: Cummins ISB/QSB engine series
  • Construction: Heat-resistant wires, abrasion-resistant connectors
  • Features: Waterproof connectors, vibration-resistant mounts
  • 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# 3999669
Old Part No.: 3976333
Type OEM
Part# variations 3999669 CUM,
3999669CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty