Radiator Hoses & Clamps

Because every engine exhibits a degree of torque-induced movement in the motor mounts, flexible connections are needed between the engine and the rigidly mounted parts of the cooling system: the radiator, heater core, and expansion tank. These flexible connections are the radiator and heater hoses. To avoid leaks and potential engine damage, these hoses should be inspected regularly and replaced at the manufacturer’s recommended interval.

The upper radiator hose conducts hot coolant from the engine to the radiator, where it is cooled, and the lower temperature liquid returns to the engine through the lower radiator hose. Heater hoses allow hot coolant to circulate through the heater core so the cabin can be warmed in winter, and the expansion/recovery tank hose allows coolant to flow back and forth the between the reservoir and radiator. Some engines may also have a thermostat bypass hose.

Coolant hoses function reliably for many years and thousands of miles, but since they are regularly subjected to pressure and temperature extremes, they eventually wear out. Inspect hoses for leakage; swelling, which can be caused by engine heat; cracks, which can result from exposure to ozone; sponginess and bulging caused by oil contamination; and abrasion damage from contact with other engine parts. Hoses frequently fail due to Electrochemical Degradation (ECD), an electrical charge created by different metals in the cooling system that weakens the hose and makes it feel soft and mushy, especially at the ends.

If you’re in need of replacement hoses, you can count on durability and precise fitment when you shop with us. We offer hose constructed from EPDM (Ethylene Propylene Diene Monomer) synthetic rubber that is resistant to ECD and other environmental elements like road salt, oil, and ozone, for a long, leak-free service life. Today’s cramped engine compartments require hoses that are molded with precise bends to prevent contact and abrasion. We have molded hoses for every application, including the branched hose assemblies that are being used on more and more vehicles. We also have flexible hose for custom applications.

In addition to hoses, we also have the pipes, adapters and gaskets that are required for many applications, as well as clamps, which should always be replaced when a new hose is installed. Some vehicles use quick-connect fittings for hose attachment instead of clamps, but these can sometimes develop leaks, and components can break during removal. While we have the complete hose assemblies for these applications that include the fittings, we also carry individual fittings so you can replace the connector without having to replace the entire hose assembly.