Gear Cover 3966831

positive OEM
Cummins
Part# 3966831
note
Protective gear cover for transmission components in heavy-duty engines.
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Extended Lead Time
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Description

The Cummins Gear Cover (3966831) is a protective enclosure designed to shield internal transmission components from contaminants and retain lubrication. It supports the operational integrity of drivetrain systems by preventing debris ingress and fluid leakage, thereby maintaining efficient mechanical function.

Key Specifications

  • Application: Tier 2 3.9 liter B engines
  • Function: Encloses and protects front gear assembly
  • Compatibility: Cummins 6B5.9 engine series and related models
  • Construction: High-strength metal alloy
  • Features: Sealing mechanisms, corrosion-resistant coating, reinforced areas
  • 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# 3966831
Type OEM
Part# variations 3966831 CUM,
3966831CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty