TKC0013 is a charge air cooler for the Kenworth T2000, T800, model years 1997 to 2007.
The core measures 40" high by 25.75" wide, 2.25" deep. It has a 4" inlet and a 4" outlet.
It replaces 45 OEM and aftermarket numbers, among them CAC112C, 5111N, 4870800001. 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.