Expansion Tank 3969462

positive OEM
Cummins
Part# 3969462
note
OLD# 4078959
Cooling system expansion tank managing coolant volume and pressure.
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Extended Lead Time
non-returnable Non-returnable info
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Description

The Cummins Expansion Tank (3969462) is a cooling system component that manages coolant volume changes caused by thermal expansion and contraction. It maintains system pressure and coolant levels to support engine cooling efficiency and prevent damage from pressure fluctuations.

Key Specifications

  • Application: K38, K50 engines
  • Function: Regulates coolant volume and system pressure
  • Compatibility: Heavy-duty commercial truck engines
  • Construction: Corrosion-resistant molded plastic
  • Features: Built-in pressure relief, reservoir for thermal expansion
  • 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# 3969462
Old Part No.: 4078959
Type OEM
Part# variations 3969462 CUM,
3969462CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty