TWC0004 is a charge air cooler for the Western Star 4700, 4900, model years 2008 to 2015.
The core measures 37.625" high by 25.375" wide, 2.5" deep. It has a 4" inlet and a 4" outlet.
It replaces 66 OEM and aftermarket numbers, among them CAC472, 0131242001, 0131242003. 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.