The blitz upper radiator hose for your 08-09 WRX & STi is the perfect choice for those who need to run a water temperature gauge but don't want to hack up their stock hoses and purchase additional parts. Blitz upper radiator hose is designed from durable multi-ply silicone which are able to withstand extreme heat conditions and high pressure. The Blitz radiator hose integrates a temperature sensor inlet, and includes all necessary fittings. Blitz provides all the hardware for a clean, and easy installation. these Blitz hoses are only available in blue silicone.