Blue 3" to 4 Inch 45 Degree Silicone Elbow Reducer Hose Coupler Intercooler Pipe Turbo Silicone 45 degree Elbow Hose Inside Diameter: 3" inches to 4" Inch Or 76mm to 102mm; Leg Length 51mm / 2 inches Thickness 5mm / 4ply polyester; Application: Basic replacement, Custom Turbo, Supercharger chargepiping set up, custom compressor, inlet for turbocharged and supercharged cars, vehicles, Engines, Motors, boats etc. Temperature Range: -40to 400Fahrenheit 1 x Genuine Silicone hose; Application: Basic replacement, Custom Turbo, Supercharger chargepiping set up, custom compressor, inlet for turbocharged and supercharged cars, vehicles, Engines, Motors, boats etc. Temperature Range: -40to 400Fahrenheit