This is a Freightliner charge air cooler that fits C120, FL106, FL120, 2005 FLD120, 1996 to 2015 CENTURY CLASS with 500-550 HP CUMMINS N14, CAT 3406 DETROIT SERIES 60 ENGINES . Core Size: 36 7/8 x 26 1/4 x 2 1/4. This Freightliner charge air cooler has 2 loop mounts on left side. The model you are replacing may have 4 loop mounts. The number of mounting points were reduced to facilitate vibration damping and isolation. This version will replace all earlier OEM mount variations. If you desire the 4 loop mounting, then see Ace Part # 23709.