4163693C91 | Genuine International® / Navistar® 12-Gal DEF Quality & Level Sensor Head Unit (QLS Module Assembly)

SKU: 4163693C91 MPN: 4163693C91

Take control of your DEF system with the Genuine International/ Navistar 12-Gal DEF Sensor Head Unit, carrying Part Number: 4163693C91 and offered in Condition: New, keeping your truck’s DEF running smoothly every day.

$649.00
No Core Charge
2 in stock

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Contact us to check if overnight next-day delivery is available for your order - PN: 4163693C91

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Product Description

Product Name DEF Quality & Level Sensor Head Unit Product Name DEF Quality & Level Sensor Head Unit
Condition New Condition New
Brand International® / Navistar® Brand International® / Navistar®
Part Number 4163693C91 Part Number 4163693C91
Engine Compatibility
International / Navistar N9, N10, N13, DT (2011-2016) International / Navistar N9, N10, N13, DT (2011-2016)
Tank Capacity Compatibility
Tank 12 Gallon Tank 12 Gallon
Specifications
Electrical Connector Deutsch DT4 (STD) Electrical Connector Deutsch DT4 (STD)
Sensor Type Digital (canbus) Sensor Type Digital (canbus)
DEF Header Height (IN) 18 DEF Header Height (IN) 18
DEF Suction Fitting Dia. (IN) 3/8 SAE J2044 DEF Suction Fitting Dia. (IN) 3/8 SAE J2044
DEF Return Fitting Dia. (IN) 5/16 SAE J2044 DEF Return Fitting Dia. (IN) 5/16 SAE J2044
Coolant Inlet Fitting Dia. (IN) 5/8 Hose Bead Coolant Inlet Fitting Dia. (IN) 5/8 Hose Bead
Coolant Outlet Fitting Dia. (IN) 5/8 Hose Bead Coolant Outlet Fitting Dia. (IN) 5/8 Hose Bead
In-Tank Filter 40µ In-Tank Filter 40µ
Tank Interface 6 Bolt Tank Interface 6 Bolt

Useful Information

Description and Purpose:

The Genuine DEF Sensor Head Unit (QLS Module Assembly) in new condition, Part number: 4163693C91, from International/ Navistar, monitors diesel exhaust fluid levels for heavy-duty trucks. Compatible with N9, N10, N13, and DT engines (2011–2016), it pairs with a 12-gallon DEF tank to maintain accurate dosing and support proper emissions system operation in commercial vehicles.

Why Replacement is Important:

A malfunctioning DEF sensor can cause incorrect readings or trigger warning lights. Replacing it ensures accurate fluid levels and prevents interruptions in emissions management.

Impact on Vehicle Performance:

Reliable DEF monitoring allows engines and exhaust systems to work consistently, helping trucks maintain performance and avoid unnecessary derates.

Manufacturer Information:

International® builds commercial trucks engineered for durability and challenging conditions. 

Navistar® designs engines and components trusted for dependable operation and long-term reliability across medium- and heavy-duty fleets.

Tags & Category: 12-Gal DEF Quality & Level Sensor, DEF QLS Module Assembly, DEF Sensor Head Unit, Diesel Exhaust Fluid Level and Quality Sensor, SCR System DEF Sensor, DEF Tank Sensor Module, Diesel Emission Control Sensor, Heavy Duty Truck DEF Sensor, DEF Monitoring Module, QLS 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: 4163693C91