5506855 | Genuine Cummins® Doser Injector for ISB and QSB engines

Description and Purpose:

The Genuine Cummins Doser Injector, identified under Part number: 5506855, arrives in new condition and is designed for ISB and QSB engines meeting EPA21 standards. Operating on a 12V system, this precision injector controls the delivery of diesel exhaust fluid into the SCR system, ensuring accurate dosing and consistent aftertreatment efficiency. Cross reference: 5506855RX, 5506855NX.

Why Replacement is Important:

When a dosing injector malfunctions, DEF cannot be properly supplied to the exhaust stream, leading to failed emissions control, possible derates, and system faults. Replacing it with a Genuine Cummins part restores proper operation and keeps your vehicle within regulatory limits.

Impact on Vehicle Performance:

Accurate DEF injection ensures stable SCR efficiency, improved emissions control, and prevents costly downtime caused by compliance-related restrictions.

Manufacturer Information:

Cummins® is a global power leader recognized for durable engines and advanced technologies that drive performance in demanding applications.

Tags & Category: Doser Injector, DEF Injector, 12V, Cummins, ISB, QSB, EPA21, Aftertreatment System, SCR System, Diesel Exhaust Fluid, Emissions Control, OEM Cummins Part, DEF Dosing Valve, Heavy Duty Engine, aftertreatment fuel injector.

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.