The Gates Heater Hose - 18168 is a high-quality, durable hose designed for use in heating and cooling systems. It is made from synthetic rubber and has a temperature rating of -40 degrees Fahrenheit to +275 degrees Fahrenheit. This hose is resistant to heat, oil, and weathering, making it ideal for use in harsh environments. It is also designed to be flexible and easy to install, making it a popular choice for automotive and industrial applications. The Gates Heater Hose - 18168 is compatible with a variety of coolants and antifreeze, making it a versatile option for a wide range of heating and cooling systems.