Cummins New EGR Cooler Cummins ISB 5.9L Exhaust Gas Recirculation Cooler

SKU: CUM805
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Expected ship time: usually within 24–48 hours; some vendor items may take longer.

Call: (503) 235-1947 | Email Us: info@dfispdx.com

Regular price $1,948.89

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Verified Fitment & Application Support

This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.

Replacement Cummins EGR cooler for 5.9L ISB applications.9L ISB applications. Exhaust routed through the cooler passes over coolant-fed tubes, dropping the gas temperature before it re-enters the intake to lower combustion temperature and NOx output.

Key Features

  • Genuine Cummins EGR cooler assembly
  • Direct replacement for a cracked, plugged or internally leaking cooler
  • Correct port locations and mounting for the Cummins 5.9L ISB installation

Fitment

  • Cummins ISB 5.9L applications, including Freightliner, Peterbilt and Ford F650/F750 chassis

Distributor catalogs list this cooler for roughly 2002-2008 5.9L ISB engines. Confirm against your engine serial number before ordering.

Product Details

  • Brand: Cummins
  • Manufacturer Part Number: 4089256
  • Condition: New

4089256NX / 4089256RX

Orders typically ship within 24–48 hours of being received, but because of vendor shipping times some orders may take longer. We ship within the United States only (48 contiguous states plus DC).

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California Proposition 65
WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer and/or reproductive harm. For more information, visit www.P65Warnings.ca.gov.