TFR0042 is a crossflow radiator for Freightliner trucks, model years 1996 to 2007.
The core measures 36" high by 31.8125" wide, 2" deep. It has a 2.5" inlet at the left / 5-3/4" and a 2.5" outlet at the right / 9-1/2". There is no integral oil cooler and no filler neck.
It replaces 213 OEM and aftermarket numbers, among them FRE44, 376761581, 5368A. 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.
