07-18 Jeep JK Hemi Swap Radiator

The 07-18 Jeep JK Hemi Swap Radiator is purpose-built for builders tackling one of the most demanding engine conversions in the off-road community. When you bolt a legendary 5.7L or 6.1L Hemi V8 into a compact JK frame, the factory cooling system becomes an immediate bottleneck—inadequate flow, poor thermodynamic efficiency, and chronic overheating plague poorly matched setups. This Cold Case radiator solves that problem by delivering OEM-quality cooling capacity engineered specifically for Hemi-swapped Wranglers, whether you're building a street-legal trail rig or a weekend warrior with serious power.

Cold Case Radiators has engineered this unit with aluminum construction and optimized core density to maximize heat dissipation while fitting the tight confines of the JK engine bay. The radiator's 25.75" x 31.75" core dimension slots directly into the OEM mounting points, eliminating expensive custom fabrication and ensuring proper airflow through the cooling fan assembly. At 19 lbs, it's lightweight enough to help offset the Hemi's additional mass without sacrificing durability or performance under sustained heat loads. The enhanced fin design and flow characteristics are calibrated to manage the Hemi's thermal output during highway cruising, off-road crawling, and high-RPM acceleration.

Hemi swap builders, off-road fabricators, and Jeep enthusiasts rely on this radiator when reliability matters more than cutting corners. Installation is straightforward on 2007–2018 JK platforms, and it integrates seamlessly with OEM cooling fans, hose routing, and transmission cooler lines. Whether you're running a carbureted 5.7L stroker or a fuel-injected 6.1L with a supercharger, proper cooling is non-negotiable; this Cold Case unit delivers the thermal headroom you need to keep cylinder head temperatures stable and engine longevity intact across thousands of trail and street miles.