An Engine Coolant Hose provides a direct and unobstructed pathway for the flow of coolant from the water pump to the radiator. By delivering a consistent and regulated flow of coolant, the hose contributes to the optimization of the engine's operating temperature.Attributes:• Inner Diameter gradually changes from 38.1mm to 34mm• Provides consistent flow for reliable operationApplications:An Engine Coolant Hose facilitates the circulation of coolant between the water pump and the radiator, allowing the coolant to absorb heat from the engine parts and dissipate it in the radiator.