5012177R91 | Genuine International® / Navistar® 15 Gallon DEF Tank QLS 1% SSI Sensor Head Unit

SKU: 5012177R91 MPN: 5012177R91

Choosing the 15 Gallon DEF Tank QLS 1% SSI Sensor Head Unit by International/Navistar, with Part Number: 5012177R91 and in Condition: New, brings steady, reliable operation for your commercial truck’s DEF system.

$499.00
No Core Charge
2 in stock

Need it fast? We offer overnight shipping

Contact us to check if overnight next-day delivery is available for your order - PN: 5012177R91

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Product Description

Product Name DEF Tank Sensor Head Unit Product Name DEF Tank Sensor Head Unit
Condition New Condition New
Brand International® / Navistar® Brand International® / Navistar®
Part Number 5012177R91 Part Number 5012177R91
Type Level Sensor Type Level Sensor
Tank Capacity Compatibility 15 Gallon Tank Capacity Compatibility 15 Gallon
Sensor Precision Rating QLS 1% SSI Sensor Precision Rating QLS 1% SSI
Vehicle Compatibility
International Miscellaneous 4300 International Miscellaneous 4300
Engine Compatibility
Cummins 6.7 liter ISB/QSB Cummins 6.7 liter ISB/QSB
Cummins 3.8 liter ISF/QSF Cummins 3.8 liter ISF/QSF

Useful Information

Description and Purpose:

The 15 Gallon DEF Tank QLS 1% SSI Sensor Head Unit, Part number: 5012177R91, arrives in new condition from International/Navistar and serves as a key component for monitoring DEF levels in heavy-duty trucks. Designed for International 4300 models with Cummins 6.7L ISB/QSB or 3.8L ISF/QSF engines, it helps maintain stable DEF availability and supports the correct operation of emissions systems in commercial vehicles.

Why Replacement is Important:

Installing a new DEF Sensor Head Unit prevents false level readings and warning messages, helping the emissions system function without interruptions or unnecessary derates.

Impact on Vehicle Performance:

Accurate DEF level tracking allows the exhaust and dosing systems to work consistently, helping trucks operate smoothly during daily routes and reducing downtime risks.

Manufacturer Information:

International® produces a wide range of commercial trucks built for demanding environments and long service life. 

Navistar® develops engines and critical components used across global fleets, focusing on dependable solutions that support the daily operation of medium- and heavy-duty vehicles.

Tags & Category: 15 Gallon DEF Tank Head Unit, DEF Tank Sensor Head, QLS 1% Sensor Head, SSI Sensor Head Unit, DEF Tank Sensor Module, Diesel Exhaust Fluid Tank Head, DEF Sensor Assembly

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: 5012177R91