Western Star Radiator - Western Star 3E0131220000, 1-800-Radiator 2400969, Serck FLA001508, Reach Cooling 42-10473

When your Western Star 4900EX, 4900FA, or 4900SA needs a new radiator, Reach Cooling 42-10473 is the aftermarket replacement built to do the job right. This direct-fit unit replaces Western Star OEM part 3E0131220000 and cross-references 1-800-Radiator 2400969, Serck FLA001508, NAPA NR4210473, Cancore Industries WES18, and OSC HD1314. Fitment covers 2011-2014 Western Star 4900EX, 4900FA, and 4900SA models across a wide range of engine displacements from 12.7L through 15.8L. The aluminum core features centrally reinforced B-type tubes for greater pressure tolerance and dramatically reduced risk of tube failure, while deep extrusion headers form a stronger tube-to-header joint that resists the stress of vibration and thermal expansion. Folded fin edges improve stability and heat disbursement, and thermal expansion cuts built into the core allow for natural expansion and contraction through heat cycles, extending service life and reducing failure rates. Longer header tabs add pressure resistance and guard against tank-to-header leaks. Reach Cooling designs this radiator to meet or exceed OEM specifications, so it installs and performs like the part it replaces without modifications.