Return Hoses exceed original equipment performance standards SAE J189 with a max working pressure of 250 psi and are suitable for low pressure high temperature operations All tubing is manufactured from high grade steel and electroplated with a zinc coating chromium III , delivering superior corrosion and rust resistance against elements such as high humidity, road salt, water, and grime Each hose is precision engineered to exact fit and includes brackets, grommets, heat shields, bushings, and protective sleeves as required for to ensure that all wearable parts are restored to original condition Hoses are made from multi-layer reinforced rubber and have a synthetic rubber coating that is highly resistant to oil, ozone, and heat. Hoses have an operating temperature range of 40 to 275 degrees Fahrenheit, exceeding original equipment requirements