Flywheel 3979011

positive OEM
Cummins
Part# 3979011
note
Mechanical flywheel storing rotational energy for smooth engine operation.
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Extended Lead Time
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Description

The Cummins Genuine Flywheel (3979011) is a mechanical component that stores rotational energy to stabilize engine operation. It smooths power delivery and supports clutch engagement, ensuring consistent engine momentum and reducing vibrations during vehicle operation.

Key Specifications

  • Application: Tier 3 6.7L ISB/QSB engines
  • Function: Stores rotational energy, smooths power delivery
  • Compatibility: 6B5.9, QSB5.9 30 CM550, QSB5.9 44 CM550, QSB6.7 CM850, QSB7 CM2880
  • Construction: Cast steel mass with balanced design
  • Features: Balanced mass, wear-resistant surface, starter ring gear interface
  • 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# 3979011
Type OEM
Part# variations 3979011 CUM,
3979011CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty