5578983 | Genuine Cummins® Doser Injector for ISB and QSB engines

SKU: 5578983 MPN: 5578983

Improve aftertreatment efficiency with Genuine Cummins Doser Injector. Part number: 5578983. Condition: new. Designed for ISB/QSB EPA21 engines. Keeps DEF dosing precise and ensures consistent emissions control.

$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: 5578983

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Product Description

Product Name Doser Injector Product Name Doser Injector
Condition New Condition New
Brand Cummins® Brand Cummins®
Part Number 5578983 Part Number 5578983
Cross Reference 5578983RX, 5578983CUM Cross Reference 5578983RX, 5578983CUM
Interchange Part Numbers CMI2520185C2, 2520185C2 Interchange Part Numbers CMI2520185C2, 2520185C2
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 Genuine Cummins Doser Injector, new and carrying Part number: 5578983, is built to deliver exact DEF amounts in ISB and QSB engines under EPA21 standards. Its robust 12V operation withstands harsh duty cycles, ensuring continuous emissions control and SCR system accuracy. Designed for high-pressure DEF injection, it maintains optimal dosing even under extreme temperature variations and heavy engine load conditions. Cross reference: 5578983RX, 5578983CUM

Why Replacement is Important:

A worn or malfunctioning injector can trigger false DEF readings or engine derates. Installing a genuine Cummins injector ensures reliable SCR operation, avoids costly repairs, and maintains system integrity.

Impact on Vehicle Performance:

Maintains accurate DEF dosing, supports emission compliance, and prevents unexpected engine power limitations.

Manufacturer Information:

Cummins® stands for engineering excellence, producing high-performance engines designed to meet the toughest operational challenges.

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: 5578983