AdBlue / DEF / Urea Level Sensor
International / Navistar DEF Quality Level Sensors
International and Navistar DEF level, temperature and quality sensor sourcing for commercial truck SCR tanks.
AdBlue / DEF / Urea Level Sensor Appearance Diagram
Use this diagram to identify the main parts of an integrated SCR tank sensor assembly: electrical connector, cable harness, coolant tubes, mounting flange, level sensor rod, temperature sensor, urea quality sensor, heater coil and bottom protective base.
- Helps buyers compare connector, length and tank installation structure before RFQ.
- Covers common names: AdBlue level sensor, DEF level sensor, urea level sensor and DEF header sensor.
- Useful for sample confirmation, bulk purchasing and aftermarket cross-reference checks.

Available OE Cross Reference Numbers
Use these pages for quick sourcing. Compatibility must be confirmed by original part number, connector, voltage, sensor length, tank depth and vehicle application before ordering.
DEF Level Sensor Kit for International Navistar OEM 2518078C91
OE: 2518078C91
International/Navistar 5-gallon DEF tank applications
DEF Header for International Navistar OEM 4140918C91
OE: 4140918C91
International/Navistar DEF tanks, 10.6-32 gal applications
DEF Quality Level Sensor for International Navistar OEM 4352100C91
OE: 4352100C91
International/Navistar DEF quality level sensor, multiple tank capacities
DEF Tank QLS Sensor for International Navistar OEM 4163694C91
OE: 4163694C91
International/Navistar 15G DEF tank QLS 1% SSI application
DEF Level Sensor for International Navistar OEM 4157846C91
OE: 4157846C91
International/Navistar commercial truck DEF tank
DEF Level Sensor for International Navistar OEM 2522332C91
OE: 2522332C91
International/Navistar commercial truck DEF tank
DEF Level Sensor for Navistar Mack OEM 4097727C91
OE: 4097727C91
International/Navistar / Mack DEF level sensor application
Buying Guide
- Provide the OE number or cross-reference number on the original sensor.
- Send clear photos of the connector, label, float/pickup tube and complete sensor length.
- Confirm whether the DEF header includes heating, temperature or quality sensing.
- For distributors, send target quantity, packing request and destination country.
Aftermarket Notice
Brand names and OE numbers are used for reference and compatibility identification only. Unless explicitly stated, products are aftermarket replacement parts and not genuine OEM parts.
