Flywheel 4063399

positive OEM
Cummins
Part# 4063399
note
OLD# 3929836
Flywheel storing rotational energy for smooth engine operation in heavy-duty trucks.
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Extended Lead Time
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Description

The Cummins Genuine Flywheel (4063399) is a mechanical component that stores and manages rotational energy within heavy-duty truck engines. It stabilizes engine operation by smoothing power delivery and reducing vibrations during combustion cycles, supporting consistent engine performance and power transfer.

Key Specifications

  • Application: QSC8.3 CM850, QSL9 CM2250, QSL8.9 CM2150, 6C8.3
  • Function: Stores rotational energy, smooths power delivery
  • Compatibility: Cummins QSC and QSL engine series
  • Construction: Cast steel mass with integrated ring gear
  • Features: High moment of inertia, balanced design, ring gear for starter engagement
  • 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# 4063399
Old Part No.: 3929836
Type OEM
Part# variations 4063399 CUM,
4063399CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty