TIR0028 is a downflow radiator for the International Prostar (High Temp. Radiator), Transtar 8600 (High Temp. Radiator), model years 2010 to 2017.
The core measures 35.125" high by 40.5" wide, 2.0625" deep. It has a 2.5" inlet at the left and a 2.5" outlet at the right bottom. The unit carries an oil cooler at the bottom grill side and no filler neck.
It replaces 69 OEM and aftermarket numbers, among them NAV37, 1003713, 1003713E. Searching any one of them will find this part.
On radiators the inlet and outlet positions, and whether the unit carries an oil cooler, decide interchangeability more often than core size does. Two radiators with identical cores are frequently not interchangeable.
