An Engine Coolant Lines Hose is constructed from materials resistant to the fluid being conducted. The inner diameter of a hose refers to the measurement of the hollow hose's internal opening. It determines the flow rate and volume capacity of the hose. The outer diameter of a hose refers to the measurement of the hose's external circumference.Attributes:• Withstands minimum vacuum pressure of 50 kPa• Manufactured to precise specifications and are built for durability and reliabilityApplications:An Engine Coolant Lines Hose helps the flow coolant in the engine cooling system to absorb heat from the engine and carry it to the radiator, where it is cooled before being recirculated.