4097725C91 | Genuine OEM International/Navistar 15 Gallon DEF Tank QLS 1% SSI Sensor Head Unit

Genuine OEM International/Navistar 15 gallon DEF tank QLS 1% SSI sensor head unit designed for compatible Diesel Exhaust Fluid (DEF) tank and SCR aftertreatment systems. This component is part of the DEF tank sensing assembly used to monitor DEF-related tank conditions.

PRODUCT INFORMATION

• Part Number: 4097725C91
• Brand: International/Navistar
• Condition: New
• Component: DEF Tank QLS 1% SSI Sensor Head Unit
• Sensor Type: QLS 1% SSI
• DEF Tank Capacity: 15 Gallon
• System: Diesel Exhaust Fluid / SCR Aftertreatment
• Part Type: DEF Sensor Head / DEF Header

APPLICATIONS

• International heavy-duty truck DEF systems
• Navistar DEF tank applications
• Compatible 15 gallon DEF tank configurations
• SCR aftertreatment systems using QLS 1% SSI sensing

Exact fitment depends on the vehicle model, DEF tank configuration, system design, and original equipment specifications.

FUNCTION

The DEF tank QLS 1% SSI sensor head unit is part of the DEF sensing assembly. It supports monitoring of DEF tank conditions and provides sensing information to the vehicle's DEF and SCR aftertreatment control system.

A worn, damaged, or failing DEF TANK QLS SENSOR HEAD UNIT may cause symptoms such as:

• Incorrect DEF level or quality readings
• DEF system warning messages
• DEF sensor-related diagnostic fault codes
• SCR system monitoring faults
• Emissions system warnings
• Improper DEF system operation

WHY REPLACE A DEF TANK QLS SENSOR HEAD UNIT?

A properly functioning DEF sensor head is important for accurate monitoring of DEF tank conditions and normal SCR aftertreatment system operation. Replacing a faulty or damaged unit can help restore proper DEF system sensing.

FITMENT INFORMATION

Please verify the part number, DEF tank capacity, vehicle model, model year, QLS/SSI configuration, and original equipment specifications before purchase.

If you are unsure whether this part is correct for your vehicle, please contact us with your VIN and original part number. We are happy to help verify compatibility before purchase.

GENUINE INTERNATIONAL/NAVISTAR PART

Part Number: 4097725C91