Oil Filler Tube 3978391

positive OEM
Cummins
Part# 3978391
note
Engine oil filler tube for controlled oil addition and lubrication maintenance.
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Description

The Cummins Oil Filler Tube (3978391) is a critical engine component that facilitates the controlled addition of oil into the engine lubrication system. It ensures proper oil flow and maintains lubrication levels essential for engine operation and longevity in heavy-duty vehicles.

Key Specifications

  • Application: Euro III Automotive 6.7L ISB/QSB engines
  • Function: Enables oil addition to engine lubrication system
  • Compatibility: B6.7, L8.9, ISB/ISD 6.7, QSL8.9, ISBE4, QSB4.5, QSB6.7, QSB7, QSC8.3, QSC9/QSL9 series
  • Construction: Metal tube with heat and corrosion resistance
  • Features: Secure fitment, anti-leak design, durable under engine conditions
  • 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# 3978391
Type OEM
Part# variations 3978391 CUM,
3978391CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty