I have one exact part number. I waited 3 months for this same part , end up buying for $3500 from 3rd party , but after 5 days of that expensive purchase dealership called me and said my 3 month waiting part just arrived.I ran and got it so I have an extra now.
I have a 2017 International Durastar with the same problem. It's been in the shop for over 2 months waiting for the part. They just called to say it's ready and it is not covered under warranty and the cost is over $1000. Why is there not a national recall for this issue? By the way, this is the third time we have had to replace the sensor.
I Had a 7000 series International I looked after and after 4 QLS sensors failed I was
told unofficially by the dealer that the coolant flow to the solenoid valve that heats
the DEF tank was wrong and the lines had to be connected differently. They switched
the lines somewhere and no more QLS failures.