4254216C91 | Genuine International® DEF Tank Level Sensor 15.5G/16G/23G QLS SSI

SKU: 4254216C91 MPN: 4254216C91

This OEM DEF Tank Level Sensor delivers trusted performance. Brand: International / Navistar. Part Number: 4254216C91. Condition: New. Built for 15.5G, 16G, and 23G DEF tanks in SCR systems.

$389.00
No Core Charge
2 in stock

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Product Description

Product Name DEF Tank Level Sensor Product Name DEF Tank Level Sensor
Condition New Condition New
Brand International® / Navistar® Brand International® / Navistar®
Part Number 4254216C91 Part Number 4254216C91
Specifications
Compatibility 15.5G, 16G, 23G DEF Tanks Compatibility 15.5G, 16G, 23G DEF Tanks
Functions Ensures accurate DEF level sensing (QLS) with serial data communication (SSI) Functions Ensures accurate DEF level sensing (QLS) with serial data communication (SSI)

Useful Information

Description and Purpose:

This Genuine DEF Level Sensor using QLS and SSI formats for 15.5G, 16G, and 23G tanks. Brand: International / Navistar. Part Number: 4254216C91. Condition: New. Built for integration into SCR emissions systems, this sensor monitors Diesel Exhaust Fluid levels with high accuracy and durability. It ensures consistent fluid tracking in varying tank sizes, sending precise signals to the engine control system. A vital part of modern aftertreatment architecture, it helps heavy-duty trucks maintain legal emissions performance and operational readiness in demanding commercial use.

Why Replacement is Important:

If left unaddressed, a faulty DEF sensor can result in dosing errors, dashboard warnings, and derate events. Replacing it ensures uninterrupted emissions processing and avoids unnecessary system faults.

Impact on Vehicle Performance:

A working DEF level sensor supports optimal engine operation and keeps the SCR system functioning correctly — preventing unexpected power loss due to miscommunication with the emissions module.

Manufacturer Information:

International® provides robust chassis and powertrain options optimized for regional, vocational, and long-haul applications.

Navistar® continues to advance engine and vehicle technologies to meet evolving environmental and operational demands.

Tags & Category: DEF Sensor, DEF Level Sensor, DEF Tank Sensor, DEF System Parts, SCR System Components, Diesel Exhaust Fluid Sensor, QLS Sensor, SSI Sensor, Diesel Emissions Parts, Aftertreatment System, Emissions Control, Truck DEF Sensor, Universal DEF Sensor

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: 4254216C91