Mainshaft Assy-Ultrashift S3120

positive OEM
Fuller
Part# S3120
note
Mainshaft assembly transmitting torque in Fuller Ultrashift transmissions.
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Description

The Fuller Eaton Mainshaft Assembly for Ultrashift transmissions (S3120) is a critical drivetrain component that transmits torque within manual and automated manual transmissions. It serves as the primary shaft supporting gear engagement and power transfer in heavy-duty commercial vehicles.

Key Specifications

  • Application: Fuller Ultrashift transmissions
  • Function: Torque transmission and gear support
  • Compatibility: Fuller S3120 series transmissions
  • Construction: Forged steel shaft with precision machining
  • Features: Integrated gear teeth, hardened surfaces, balanced assembly
  • Quality: OEM Fuller Eaton 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# S3120
Type OEM
Manufacturer Fuller
Warranty Standard Manufacturer Warranty