Gates molded coolant hoses are manufactured to fit upper, lower, bypass, heater and other coolant applications with OEM-quality specifications, saving you time, costs, and energy from going to your OE dealer for radiator hose replacements. Approved for Marine applications. Gates' curved hose line is the most comprehensive line on the replacement market. Engineered to resist electrochemical degradation, the leading cause of hose failure. Pre-shaped to fit and to ensure perfectly sealed conditions. Aramid or rayon knit reinforcement (depending on the application). About Gates Automotive Gates work with virtually every original equipment manufacturer worldwide to design products for new vehicles as they are being developed. These strong relationships together with our commitment to continuous innovation enable us to offer a complete line of OE quality Radiator and Heater hose replacement products for the automotive aftermarket. Gates automotive parts are as good as the original or better.