A050S599 | Genuine Cummins® Doser Injector for ISB and QSB engines

SKU: A050S599 MPN: A050S599

Secure precise emissions control with Genuine Doser Injector. Part number: A050S599. Condition: new. Brand: Cummins. Compatible with ISB/QSB EPA21 engines. Maintains reliable DEF dosing.

$629.00
No Core Charge
3 in stock

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Contact us to check if overnight next-day delivery is available for your order - PN: A050S599

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Product Description

Product Name Doser Injector Product Name Doser Injector
Condition New Condition New
Brand Cummins® Brand Cummins®
Part Number A050S599 Part Number A050S599
Interchange Part Numbers CMI2520184C1, 2520184C1 Interchange Part Numbers CMI2520184C1, 2520184C1
Engine Compatibility
Cummins ISB, QSB Cummins ISB, QSB
Emission Compliance EPA21 Emission Compliance EPA21
Specifications
Voltage 12V Voltage 12V

Useful Information

Description and Purpose:

This New Genuine Cummins Doser Injector, designated as Part number: A050S599 and is specifically engineered for ISB and QSB engines meeting EPA21 standards. Operating at 12 volts, it precisely meters Diesel Exhaust Fluid (DEF) into the SCR aftertreatment system, ensuring consistent emissions control. Built for heavy-duty performance, this injector delivers reliable DEF dosing under demanding conditions, supporting engine efficiency and environmental compliance.

Why Replacement is Important:

A malfunctioning DEF injector can cause irregular dosing, trigger emission warnings, or even lead to engine derates. Replacing it with a genuine Cummins unit ensures the SCR system works correctly and prevents costly downtime.

Impact on Vehicle Performance:

Proper DEF injection preserves emission control efficiency, avoids engine derates, and supports consistent performance of ISB and QSB-equipped vehicles.

Manufacturer Information:

Cummins® is trusted for engines that provide strength, fuel efficiency, and long service life across commercial and industrial sectors.

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.

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  • Icon Truck, Fast Delivery
    Free shipping over $199 Place an order today and receive it on Mar 6
  • Clock Icon
    Orders placed before 7-PM EST will ship same business day
  • Location icon, warehouse pickup point.
    Pickup available usually ready in 24 hours
  • Need it fast? We offer overnight shipping

    Contact us to check if overnight next-day delivery is available for your order - PN: A050S599