Jeep 97-99 Wrangler TJ 4.0L Left Hand Drive HPS High Temperature 3-ply Reinforced Silicone Heater Hose Kit, Black is designed to replace stock OEM rubber heater hoses which can eventually weaken over time, leading to premature failure. With premium quality silicone and race inspired design, this HPS silicone heater hose kit can withstand the harsh high temperature and high pressure operating conditions of the engine yet still maintaining peak efficiency during competition or daily driving. HPS silicone heater hose kit has all the correct bends and curves for a perfect fit replacement for your OEM rubber coolant 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. Silicone hose is not compatible with fuel or oil.