Mishimoto radiator hose kits are made with a dual layer combining high grade silicone and heat-resistant embedded fibers to provide efficient heat reduction and increased pressure tolerance, all with an OEM replacement fit! Interior Color: Orange Interior Material: Heat-Resistant Embedded Fibers Exterior Color: Black Exterior Material: Silicone Max Temperature: 330 F OEM Applications Subaru WRX STI 2004+ Subaru WRX 2001+