4388105 | Genuine Cummins® Def Doser Pump for ISB, QSB engines

Description and Purpose:

This Genuine Cummins DEF Doser Pump is engineered for ISB and QSB engines, ensuring precise Diesel Exhaust Fluid delivery under EPA17 standards. Part number: 4388105, new condition, it maintains SCR system efficiency by protecting critical components and supporting accurate emissions control. Its robust 12V operation is designed to handle harsh heavy-duty cycles, keeping your truck running reliably.

Why Replacement is Important:

A malfunctioning DEF doser pump can lead to incorrect fluid dosing, warning lights, or engine derates. Replacing it prevents system failures and maintains consistent operation.

Impact on Vehicle Performance:

Reliable DEF injection ensures the SCR system functions optimally, avoiding engine derates and keeping emissions within regulatory limits.

Manufacturer Information:

Cummins® delivers advanced engines and power systems known for reliability, performance, and long-lasting service under demanding conditions.

Tags & Category: Cummins, def doser valve, DEF Doser Pump, Cummins, ISB, QSB, ISB/QSB engine doser pump, Cummins EPA17 emissions system, SCR aftertreatment component, Diesel Exhaust Fluid dosing pump, EPA17 compliant DEF system, heavy duty Cummins ISB/QSB engines.

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.