Muffler 3999657

positive OEM
Cummins
Part# 3999657
note
Exhaust muffler reducing noise and managing flow in heavy-duty trucks.
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Extended Lead Time
non-returnable Non-returnable info
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Description

The Cummins Heavy-Duty Truck Exhaust Muffler (3999657) is a component designed to reduce engine noise and regulate exhaust flow in heavy-duty truck exhaust systems. It manages sound dissipation and exhaust gas movement to support efficient engine operation and compliance with emissions standards.

Key Specifications

  • Application: Heavy-duty truck exhaust systems
  • Function: Noise reduction and exhaust flow management
  • Compatibility: Cummins ISB CM850, ISL9 CM2150 SN engines
  • Construction: Steel chambers and baffles
  • Features: Multi-chamber design, backpressure regulation, heat dissipation
  • 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# 3999657
Type OEM
Part# variations 3999657 CUM,
3999657CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty