About This Item

Item Description:

International 5012172R91 DEF Quality Level Sensor 9.5 Gallon Tank





This came in a lot of parts that I purchased from a DOT repair facility. It appears to have been previously installed. Selling as used. Comes as pictured.


This Navistar International 5012172R91 DEF Quality Level Sensor is a used commercial truck part. Designed for a 9.5 Gallon Tank, this Diesel Exhaust Fluid (DEF) sensor, also known as a QLS sensor or quality sensor, monitors DEF levels and quality in heavy-duty commercial truck SCR systems.