Kenworth, Peterbilt Radiator - Northern Radiator 238901, Spectra Premium 2001-2517P, Active Radiator Supply Company 650032PTWF, Reach Cooling 42-11018

The Reach Cooling 42-11018 is an aftermarket radiator built to replace OEM HK179001 across a wide range of Kenworth and Peterbilt trucks. It also cross-references Northern Radiator 238901, Active Radiator Supply Company 650032PTWF, Spectra Premium 2001-2517P, 1-800-Radiator 2401893, and LT9614, making it straightforward to confirm the right fit regardless of which catalog you're working from. Engineered to meet or exceed OEM specifications, this down-flow aluminum core radiator uses B-type tubes with central reinforcement for improved pressure tolerance, deep extrusion headers that resist tube-to-header leaks caused by vibration and thermal cycling, and folded fin edges for added stability and heat disbursement. Thermal expansion cuts allow the core to breathe through normal heat cycles, extending service life and reducing failure rates. Multi-fit attachments are included to cover multiple vehicle applications without sacrificing precise fitment, and a frame is included for straightforward installation. Compatible with the Kenworth T680 (2018-2019, all available engine displacements from 8.9L to 14.9L), the Kenworth T880 (2024-2025, 8.9L through 14.9L), and the Peterbilt 579 (2018-2019, 8.9L through 14.9L), this is a reliable, direct-replacement cooling solution for high-demand Class 8 applications.