HPS High Temp 3-ply Reinforced Silicone Heater Hose Kit Black is designed to replace stock OEM rubber hoses which can eventually weaken over time, leading to premature failure. With premium quality silicone and race inspired design, this HPS silicon 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, compare to the universal hoses you can get from the local auto store, HPS hose kit is much easier to work with. Max. Temperature Rating: 350 deg. F. 100% Stainless Steel Clamps are included for easy installation. This product fits Toyota 2003-2009 4Runner 4.7L V8 Left Hand Drive / Lexus 2003-2009 GX470 4.7L V8 Left Hand Drive. Remark: Silicone hose water permeation rate is 10 to 15 times greater than standard EPDM rubber hose. Checking water level regularly is highly recommended when silicone coolant hoses are used in a daily driving vehicle.