Full Aluminum Racing Cooling Radiator Stop Leak For 1987-2006 Jeep Wrangler YJ TJ 2.4-4.2L 2.5L 4.0L Silver Core Thickness: 2 3/8" Inlet/outlet: 32mm / 38mm Improves cooling by 35% to 45% temperature Made of high quality full T-6061 aluminum construction Vehicle Tested. Perfect Drop-In Fit. 1 Year Manufacturer Warranty