TIR0021 is a crossflow radiator for the International 4000, 4300, 4400, model years 2005 to 2007.
The core measures 22" high by 26.0625" wide, 2.25" deep. It has a 2.25" inlet at the left and a 2.25" outlet at the right. There is no integral oil cooler and no filler neck.
It replaces 35 OEM and aftermarket numbers, among them NAV26, 1S180071, 1S180126. 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.
