4388378 | Genuine Cummins® Diesel Exhaust Fluid Filter (DEF) Kit for ISB, QSB

Description and Purpose:

This Genuine Cummins DEF Filter Kit, new with Part number: 4388378, is crafted for ISB and QSB engines under EPA17 standards. It filters Diesel Exhaust Fluid to maintain accurate dosing and protects critical SCR components in heavy-duty trucks. Designed for long-term durability, this kit ensures consistent DEF flow even under extreme operating conditions. 

Why Replacement is Important:

Without a clean DEF filter, dosing accuracy suffers, potentially triggering engine or SCR system warnings. Replacement keeps the system reliable.

Impact on Vehicle Performance:

Ensures smooth DEF delivery, SCR system efficiency, and full compliance with environmental regulations.

Manufacturer Information:

Cummins® provides durable engines and components engineered for efficiency, longevity, and consistent performance in demanding conditions.

Tags & Category: Def Pump Filter, Diesel Exhaust Fluid Filter Kit, Cummins, ISB, QSB, ISB/QSB DEF filter, Cummins EPA17 emissions system, SCR aftertreatment filter kit, Diesel Exhaust Fluid system maintenance, AdBlue filter kit Cummins ISB QSB, EPA17 compliant DEF system filter.

Warranty:

Parts Finder Q offers a 365-days warranty for all types of parts in any condition. The -warranty applies exclusively to purchases made directly through our website (partsfinderq.com). Please note that purchases made through third-party platforms like eBay or Amazon are not covered by this warranty.