4352100C91 | Genuine International® DEF Tank Level Sensor 15.5G/16G/23G QLS SSI

Description and Purpose:

The Genuine DEF Tank Level Sensor from International / Navistar is built for compatibility with 15.5, 16, and 23-gallon tanks. Identified by Part number: 4352100C91, this component arrives in new condition and is engineered for accurate Diesel Exhaust Fluid monitoring through QLS and SSI technology. It is specifically designed to maintain proper SCR aftertreatment operation, delivering precise fluid measurements under demanding operating conditions while ensuring emissions compliance in heavy-duty applications.

Why Replacement is Important:

When a DEF sensor begins to fail, it can generate incorrect readings and cause system warnings or even performance restrictions. Timely replacement keeps emissions systems functioning properly and helps avoid costly breakdowns.

Impact on Vehicle Performance:

Reliable DEF level detection ensures consistent SCR efficiency, prevents engine derates, and supports smooth vehicle operation within strict environmental standards.

Manufacturer Information:

International® is a leading manufacturer of commercial trucks engineered for durability, uptime, and performance across long-haul, regional, and vocational operations.

Navistar® develops advanced trucks and engines focused on reliability, efficiency, and long-term fleet productivity.

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.