Heater Hoses

Give your engine’s heating and coolant circuit a performance boost with blue silicone heater hoses from American Radiator. Designed for heavy-duty trucks, our heater hoses are built to handle extreme heat, pressure, and vibration—outperforming traditional rubber hoses in durability and thermal resistance.

These blue silicone heater hoses maintain consistent coolant flow from the engine to the heater core, resisting collapse and leaks even under fluctuating temperature cycles. Constructed with multiple reinforcement layers and UV/ozone-resistant materials, they resist cracking, swelling, and abrasion—ensuring long service life in demanding environments.

Our heater hoses are available in a variety of diameters and lengths tailored to fit popular heavy-duty platforms like Freightliner, Kenworth, Peterbilt, Volvo, International, and Western Star. Each hose is engineered for a direct replacement fit, making retrofits or OEM replacements easy and reliable.

Because heater hose failure can lead to poor cabin heat, coolant loss, or overheating, American Radiator stocks a broad range of blue silicone hoses and provides expert support to help you select the right part the first time. For trusted quality and performance, choose American Radiator’s blue silicone heater hoses—engineered for lasting reliability and better engine comfort under all operating conditions.

FAQ'S

What is a heater hose used for in heavy-duty vehicles?
A heater hose carries hot engine coolant from the engine to the heater core (and back), enabling cab heat, defrost, and temperature control inside the vehicle.

How do I choose the correct heater hose?
Match the inner diameter, hose length, bend configuration, wall thickness, and end connections to your original design. Use OEM specs or compare existing hoses to ensure compatibility.

What materials are used in heavy-duty heater hoses?
They are typically made from reinforced silicone or EPDM (ethylene propylene diene monomer) compounds, with textile or braided internal reinforcement to withstand high temperature, pressure, and engine vibration.

Can heater hoses fail, and what causes failures?
Yes. Common failure modes include softening, cracking, bursting, wear from rubbing or abrasion, or clamps loosening. Exposure to oil or chemicals can also degrade the material over time.

How often should heater hoses be inspected or replaced?
Inspect heater hoses at each service interval (e.g. coolant flush intervals) for soft spots, bulges, cracks, or leaks. Replace hoses showing signs of aging or damage before they fail under load.