4254202C91 | Genuine International® / Navistar® Diesel Exhaust Fluid (DEF) QLS Header for 15.5–23G

SKU: 4254202C91 MPN: 4254202C91

Count on steady DEF flow with the Genuine Diesel Exhaust Fluid (DEF) QLS Header by International/Navistar, supplied in new condition with Part number: 4254202C91, built for systems using 15.5–23 gallon tanks.

$479.00
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: 4254202C91

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Product Description

Product Name Diesel Exhaust Fluid (DEF) QLS Header Product Name Diesel Exhaust Fluid (DEF) QLS Header
Condition New Condition New
Brand International® / Navistar® Brand International® / Navistar®
Part Number 4254202C91 Part Number 4254202C91
Specifications
Tank capacity 15.5–23 Gallons Tank capacity 15.5–23 Gallons

Useful Information

Description and Purpose:

This Genuine Diesel Exhaust Fluid (DEF) QLS Header with Part number: 4254202C91, comes in new condition and serves as the primary module for reading DEF level, quality, and temperature within 15.5–23-gallon tanks. It supplies accurate data to the SCR system, ensuring stable dosage and consistent emissions control.

Why Replacement is Important:

A failing header causes inaccurate DEF readings, warning lights, and potential derate, making timely replacement essential to restore correct system monitoring.

Impact on Vehicle Performance:

A properly functioning module supports steady SCR activity, protects the vehicle from power-loss scenarios, and helps maintain compliant emissions during operation.

Manufacturer Information:

International® develops components engineered to integrate directly with their DEF and emissions platforms for dependable system feedback. 

Navistar® provides aligned OEM designs that maintain reliable communication between DEF sensors and engine controls.

Tags & Category: DEF QLS Header, Diesel Exhaust Fluid Header, DEF Tank Header, QLS Sensor Header, SCR System Header, DEF Distribution Header, Diesel Emission Fluid Header

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: 4254202C91