TKR0015 is a downflow radiator for Kenworth trucks, model years 1989 to 1991.
The core measures 39.25" high by 29" wide, 2.25" deep. It has a 2.5" inlet at the left and a 2.5" outlet at the right. There is no integral oil cooler and no filler neck.
It replaces 25 OEM and aftermarket numbers, among them 650001, 650001BT, 6501. 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.
