4163699C91 | Genuine International® / Navistar® Diesel Exhaust Fluid (DEF) QLS Header for 15.5–23G

SKU: 4163699C91 MPN: 4163699C91

Ensure hassle-free DEF operation with the Genuine International/Navistar Diesel Exhaust Fluid (DEF) QLS Header. Condition: new. Part number: 4163699C91, designed for trucks with 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: 4163699C91

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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 4163699C91 Part Number 4163699C91
Specifications
Tank capacity 15.5–23 Gallons Tank capacity 15.5–23 Gallons

Useful Information

Description and Purpose:

Genuine International/Navistar Diesel Exhaust Fluid (DEF) QLS Header comes with Part number: 4163699C91 in new condition, controls DEF flow in tanks of 15.5–23 gallons. The unit ensures precise sensor integration, reliable fluid distribution, and consistent emissions system operation, supporting heavy-duty truck performance in commercial fleets.

Why Replacement is Important:

Replacing a damaged QLS header prevents incorrect DEF readings and system alerts, maintaining proper fluid monitoring and emissions compliance.

Impact on Vehicle Performance:

Accurate DEF control keeps engines operating efficiently, stabilizes emissions, and ensures reliable heavy-duty truck operation.

Manufacturer Information:

International® produces truck components engineered for durability and heavy-duty use. 

Navistar® designs engines and supporting parts for consistent DEF management and long-term performance in commercial vehicles.

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: 4163699C91