07-18 Jeep Wrangler Hemi/LS Swap Radiator

The 07-18 Jeep Wrangler Hemi/LS Swap Radiator by Cold Case Radiators is purpose-built for serious engine swappers who demand reliable thermal management when upgrading to a high-displacement Hemi or LS powerplant. When you commit to a Hemi or LS swap in your Wrangler, you're adding significantly more horsepower and heat output than the factory cooling system can handle—making a dedicated swap radiator essential. This unit replaces the stock radiator completely, accommodating the larger displacement and increased BTU rejection requirements of modern V8 engines in the JK and JL platform.

Cold Case Radiators engineered this radiator with heavy-duty aluminum construction and multi-pass core design to maximize cooling efficiency under sustained high-load conditions typical of swapped vehicles. The core geometry is optimized to fit within the factory radiator envelope while delivering superior heat dissipation compared to OEM units, preventing cylinder head temperature creep during extended trail runs or highway driving. At 19.2 pounds and measuring 26 by 9 by 32.5 inches, the radiator maintains packaging compatibility with the Wrangler's engine bay while providing the thermal capacity required for Hemi or LS output—typically 350–400+ horsepower depending on tune and boost.

This radiator is the go-to choice for 2007–2018 JK Wrangler owners executing Hemi or LS engine swaps, whether building a street-legal cruiser, weekend warrior, or competition-ready rig. Installation requires factory radiator removal and hose adaptation to your specific engine bay layout, but the direct-fit design eliminates custom fabrication of the radiator mounting points. Pair this unit with a quality electric fan, updated water pump, and proper hose routing to ensure consistent coolant flow and long-term reliability under boost or sustained horsepower delivery.