Western Star, Freightliner Radiator - Freightliner A0524938003, Spectra Premium 2001-1762, Active Radiator Supply Company 800100STV, Reach Cooling 42-10508

The Reach Cooling 42-10508 is an aftermarket radiator built as a direct replacement for Freightliner and Western Star trucks, cross-referencing Freightliner 0529618003, Active Radiator Supply Company 800100, Spectra Premium 20011762P, 1-800-Radiator 2401075, Serck FLA002275, and NAPA NR4210508. This aluminum-core, plastic-tank radiator features a downflow design with a top-right inlet and bottom-left outlet, and includes a 12-inch engine-side transmission oil cooler. Reinforced B-type tubes with central support reduce the probability of tube failure under pressure, while deep-extrusion headers create stronger tube-to-header joints that stand up to vibration and thermal cycling. Folded fin edges improve stability and heat dissipation, and thermal expansion cuts allow the core to breathe through normal heat cycles, extending service life. The radiator is engineered to meet or exceed original equipment specifications for Freightliner 114SD and Coronado models from 2008 through 2019, as well as Western Star 4700SB, 4700SF, 4900EX, 4900FA, and 4900SA models from 2012 through 2019. If you are sourcing by OEM number and need a confirmed match for Freightliner 0529618003, this is the correct aftermarket replacement to order.