TMC0019 is a crossflow charge air cooler for Mack trucks.
The core measures 30.625" high by 24.9375" wide, 2.375" deep. It has a 0" inlet and a 0" outlet. There is no integral oil cooler and no filler neck.
It replaces 54 OEM and aftermarket numbers, among them MAC17308, MAC17308N, MAC17308R. 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.