Western Star Radiator - Western Star WSRP91833B2, Northern Radiator 238659, Spectra Premium 2001-4705, Reach Cooling 42-10494

Keep your Western Star running cool with the Reach Cooling 42-10494 aftermarket radiator, a direct replacement for Western Star 529622002. This unit also cross-references Northern Radiator 238659, Active Radiator Supply Company 800119PT, Spectra Premium 2001-4705, 1-800-Radiator 2400299, and Serck FLA002226, making it easy to confirm the right fit regardless of how you track parts. Built with an aluminum core and PA66-GF30 plastic tanks, the radiator features a two-row downflow design with a 40.63-inch core width and 37.68-inch core height. B-type tubes with central reinforcement resist pressure and reduce the risk of tube failure, while deep extrusion headers create a stronger tube-to-header joint that stands up to vibration and thermal cycling. Folded fin edges improve heat disbursement, and thermal expansion cuts allow the core to breathe through normal heat cycles for extended service life. A 12-inch engine-side transmission oil cooler is included. This radiator fits 2010-2018 Western Star 4900EX, 4900FA, and 4900SA trucks across engine sizes from 12.5L to 15.6L. If you are sourcing by the OEM number 529622002 or any of the listed interchanges, this is the correct aftermarket replacement.