Chevrolet, Isuzu, GMC Radiator - Isuzu 552049, Northern Radiator 232049, Active Radiator Supply Company 580031, Reach Cooling 42-10430

When your Isuzu F-Series Cabover or Chevrolet and GMC T-Series truck needs a new radiator, the Reach Cooling 42-10430 delivers an aftermarket replacement built to meet or exceed original equipment specifications. This downflow radiator directly replaces Isuzu 206001 and cross-references Northern Radiator 232049, Active Radiator Supply Company 580031ST, NAPA NR4210430, Serck FLA000861, and Paccar Parts RAD42-10430TRP, so you can confirm the right fit before it leaves the shelf. Fitment covers 1998-2004 Isuzu FRR, FSR, FTR, FVR, and FXR models, 1997-2002 Chevrolet T6500 and T7500, and 1999-2002 GMC T6500 and T7500 across a range of 6.6L, 7.1L, 7.2L, and 7.8L engines. Construction highlights include reinforced B-type tubes with central support for superior pressure tolerance, deep extrusion headers that resist vibration and thermal expansion at the tube-to-header joint, folded fin edges for enhanced stability and heat disbursement, and thermal expansion cuts that allow the core to breathe through normal heat cycles. A transmission oil cooler with 18-inch fitting spacing is integrated into the unit. With an inlet at the top left and outlet at the bottom right, this radiator drops into place as a true direct replacement, getting your truck back on the road with the cooling performance it was built for.