Mack Radiator - Northern Radiator 238787, 1-800-Radiator 2401229, Serck FLA000456, Reach Cooling 42-10402

When your 2010-2016 Mack LEU needs a reliable cooling system repair, the Reach Cooling 42-10402 aftermarket radiator delivers a direct, correct-fit replacement that meets or exceeds original equipment specifications. This unit cross-references Northern Radiator 238787, 1-800-Radiator 2401229, Serck FLA000456, NAPA NR4210402, Paccar Parts RAD42-10402TRP, and OSC HD9319, making it straightforward to confirm you have the right part. The aluminum core is built with B-type tubes featuring central reinforcement for greater pressure tolerance and a substantially reduced risk of tube failure under the thermal and vibration demands of heavy-duty service. Deep extrusion headers create a stronger tube-to-header joint that resists the effects of vibration and thermal expansion, virtually eliminating header leaks. Folded fin edges improve stability and heat disbursement, while thermal expansion cuts allow the core to breathe naturally through normal heat cycles, extending service life. Longer header tabs add pressure resistance to keep tank-to-header joints sealed. Covering both the 10.8L and 8.9L Mack LEU engine configurations from 2010 through 2016, this radiator is the dependable, properly fitted replacement your truck needs to get back on the road.