HPS (57-1221-BLK) Black Silicone Radiator and Heater Hose Kit for Jeep Wrangler Replace stock OEM rubber coolant and heater hoses which can eventually weaken over time, leading to premature failure Withstand the harsh high temperature and high pressure operating conditions of the engine yet still maintaining peak efficiency during competition or daily driving Perfect fit replacement for your OEM rubber intercooler hoses, it is not a cheap one size fits all universal hose you get at the local parts store that you have to fight with to install Temperature range: -65 degree Fahrenheit to +350 degree Fahrenheit (177 degree Celsius); 100 percent stainless steel clamps are included for easy installation Vehicle application: Jeep 97-99 Wrangler TJ 4.0L left hand drive