TMR0030 is a downflow radiator for the Mack RD, model years 1985 to 1993.
The core measures 30.4375" high by 33.6875" wide, 2.625" deep. It has a 2" inlet at the left and a 2.5" outlet at the left. The unit carries no integral oil cooler and a center filler neck.
It replaces 14 OEM and aftermarket numbers, among them 730059, 730059BT, MK7174. 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.
