TFC0031 is a crossflow charge air cooler for the Freightliner Century, FL.
The core measures 30.5" high by 21.625" wide, 2.8125" deep. It has a 0" inlet and a 0" outlet. There is no integral oil cooler and no filler neck.
It replaces 49 OEM and aftermarket numbers, among them FRT18105, FRT18105N, 1105. 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.