TPR0019 is a downflow radiator for the Peterbilt 379, model years 1995 to 2003.
The core measures 29.25" high by 34.5" wide, 2.25" deep. It has a 2.5" inlet at the left and a 3" outlet at the right. There is no integral oil cooler and no filler neck.
It replaces 3 OEM and aftermarket numbers, among them 770047, 770047BT, 0705716A030. 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.
