Usage: for engine air intake, exhaust, water, oil resistance, turbocharger, radiators,intercoolers, oil application and other sy Hump Hose RuducerUsed to connect piping of different dimensions.Specification for silicone hose:1) Usage; for engine air intake, exhaust, water, oil resistance, turbocharger, radiators,intercoolers, oil application and other systems 2) Temperature range; -65 to +260 ; ...