TWC0002 is a charge air cooler for the Western Star 4900, model years 2001 to 2005.
The core measures 0" high by 0" wide, 0" deep. It has a 0" inlet and a 0" outlet.
It replaces 22 OEM and aftermarket numbers, among them CAC370, 0521115000, 1E4208. Searching any one of them will find this part.
On charge air coolers the inlet and outlet positions and the boot diameters matter as much as the core. A cooler that fits the opening but presents its connections on the wrong side will not plumb up.