TKC0004 is a charge air cooler for the Kenworth, Peterbilt 579, T680, model years 2018 to 2022.
The core measures 37.125" high by 21.625" wide, 2" deep. It has a 4" inlet and a 4" outlet.
It replaces 20 OEM and aftermarket numbers, among them 8644, 8644N, CACP324. 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.