Sunsong 3501105 Power Steering Reservoir Hose 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 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.