TSR0001 is a downflow radiator for the Sterling Acterra, model years 2005 to 2007.
The core measures 34" high by 26.875" wide, 2" deep. It has a 2" inlet at the right and a 2" outlet at the left. The unit carries an oil cooler at the bottom and no filler neck.
It replaces 48 OEM and aftermarket numbers, among them FRE63, BHTD5970, BHTE4690. 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.
