HPS Black, Blue & Red high temperature 3-ply reinforced silicone heater hose kit (part number 57-1802-123) replaces 2002-2003 Subaru Impreza WRX 2.0L Turbo stock OEM rubber heater coolant hoses with high-heat resistance material which meets or exceeds OE specifications (Maximum temperature rating: 350F). The premium grade high-heat resistance reinforced silicone hoses are made with correct bends and curves to ensure perfect fitment. Includes 100% stainless steel non-perforated embossed hose clamps for easy installation, which do not cut through the silicone hoses. Prevent and fix the coolant leaking and engine overheating problem caused by cracked, damaged or collapsed OEM rubber heater coolant hoses. Compatible with OEM part numbers 72421FE010, 72411FE001. Race proven design with long lasting quality and engineered for extremely high temperature service (Max. 350F) and prolonged exposure to under-hood and coolant heat. Warranty: 2 Years. 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. Vehicle Application: 2002-2003 Subaru Impreza WRX 2.0L Turbo.