Automotive hoses carry fluids or gases in cars, including coolant, fuel, and air. Radiator hoses are made of strong rubber to withstand heat and pressure, while fuel hoses must resist breakdown from fuel contact. Some hoses carry air, and all require special fittings. Other substances, like engine oil and refrigerant, require metal tubes or pipes.
An automotive hose is any hose that carries automotive fluids or gases from one part of the car to another. This includes oxygen, fuel, and coolant, which can be water, antifreeze, or a mixture of both. Each of these types of substances requires a different type of automotive hose, so it’s important to know what each is and how they differ.
Radiator hoses are probably the best known type of automotive hose. These hoses channel coolant from the engine, where the fluid picks up excess heat, to the radiator, which is designed to help you cool down quickly. Due to the amount of heat they carry and the pressure the cooling system is often under, these hoses must be made of very strong rubber.
In addition to the two large radiator hoses, there are often numerous small coolant hoses around the engine, running from one coolant port to another. All cars also have heater core hoses, which carry hot coolant from the engine to the heater core inside the dash; The interior fan then pushes air through the heater core, essentially using the heat from the engine to warm up your car’s interior. All of these hoses are made of the same thick, strong rubber as radiator hoses.
Some types of automotive hoses have to withstand much more destructive substances. Fuel hoses, for example, must be made of a special rubber that does not break down from constant contact with fuel. However, fuel hoses are no longer as common on cars as they used to be. Fuel must be taken from the fuel tank, which is usually in the back, to the engine bay, so car manufacturers began using metal tubes for at least part of this distance. Also, in modern fuel-injected cars, the fuel system is highly pressurized, so most cars stopped using fuel hoses when carburetors fell out of use.
Still other types of hoses carry nothing but air. These hoses run from the air cleaner to the intake manifold, where air is let into the combustion chambers in metered amounts, ensuring the fuel has just the right amount of oxygen to burn efficiently. While these types of hoses are very different, they all require special automotive hose fittings called hose clamps, typically a piece of metal that goes around the hose where it fits into the end of a metal fitting, with a screw to tighten or loosen the hose. clamp .
There are other substances your car uses that would quickly destroy a car hose. For example, engine oil is completely contained in the engine block and head. The refrigerant, which your air conditioner uses to cool your car, is a destructive substance that is usually channeled through metal tubes. Exhaust gases are too hot for rubber hoses, so exhaust pipes are always made of metal.
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