Fan Clutch 3928865

positive OEM
Cummins
Part# 3928865
note
OLD# 4937997
Viscous fan clutch controlling radiator airflow for engine cooling systems.
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Extended Lead Time
non-returnable Non-returnable info
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Description

The Cummins Engine Cooling Fan Clutch (3928865) regulates radiator airflow by adjusting fan speed based on engine temperature. It reduces engine load during low cooling demand and increases airflow when cooling is required, maintaining optimal engine operating temperature. This component is essential for efficient thermal management in heavy-duty engine cooling systems.

Key Specifications

  • Application: B5.9 Series, ISB Series, ISC Series, ISL Series, QSB Series
  • Function: Regulates fan speed via viscous coupling
  • Compatibility: Cummins B5.9, ISB, ISC, ISL, QSB engine series
  • Construction: Metal housing, silicone-based viscous fluid
  • Features: Viscous coupling, temperature-responsive engagement, variable fan speed
  • 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# 3928865
Old Part No.: 4937997
Type OEM
Part# variations 3928865 CUM,
3928865CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty