TMR0021 is a downflow radiator for the Mack Titan, model years 2012 to 2015.
The core measures 49.6875" high by 34.1875" wide, 2.0625" deep. It has a 2.5" inlet at the left and a 2.5" outlet at the right. The unit carries an oil cooler at the bottom and no filler neck.
It replaces 22 OEM and aftermarket numbers, among them 730057, 730057PT, N9600002. Searching any one of them will find this part.
On radiators the inlet and outlet positions, and whether the unit carries an oil cooler, decide interchangeability more often than core size does. Two radiators with identical cores are frequently not interchangeable.
