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What Hose to Use For Transmission Cooler




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what hose to use for transmission cooler

If you’re looking for an automatic transmission cooler hose, you have a few different options. There are the SAE Type A hoses and Type B hoses. These hoses can be used at temperatures between -40 and 125 degrees Celsius. There’s also the Type AT and Type BT hoses, which are designed for operating pressures up to 1.7 MPa.

Brake line

Some vehicles use brake line to cool the transmission. It is made from rubber or steel and is attached to the transmission cooler. A 3/8″ steel brake line can be made with the use of a tube flaring tool. Copper is not rated for brake-line pressure, but it is possible to make a dissimilar metal.


Copper transmission cooler hoses can circulate transmission fluid at high temperatures. These hoses meet the SAE J1532 performance standards. They are also resistant to ozone, fuel and oil. They can withstand temperatures of up to 257°F. They are also resistant to heat aging.


To get the most performance out of your transmission cooler, you should replace the stock hose with a silicone hose kit. These silicone hoses are made from high-grade silicone, with three to five layers depending on the inner diameter, which means that they are highly resistant to pressure and temperature changes. This is a great alternative for the original rubber hose, which tends to crack and look old after a while. The best part is that these kits come with stainless steel heavy-duty t-bolt clamps that won’t damage the hose itself.

These hoses are available in different sizes. You can purchase bulk hoses in a shop or order them online to be shipped directly to your home. The inside diameter of a bulk hose is 3/8 inches, while a smaller one is 5/16 inches. The hoses also come with the necessary hose fittings.

Adding a hose is easy and quick – just remove the old hose and install the new one. The cooling line will connect the coolant to the transmission, retaining the cold temperature. If you have to cut a hose, use a dedicated tool for the job or simply use a razor blade. Regardless of the method, you must use safety equipment and level ground to prevent the vehicle from tipping over.

Putting a rubber hose on the transmission is a temporary solution. In many cases, a more extensive repair is required. Rubber hoses can crack or melt if they are placed near a hot component. It is important to choose the right hose for your vehicle.

Regular inspections of the hoses are recommended. You should replace them as needed. Check the hose clamp for proper fitment. Before installing a new hose, mark the end of the old hose with a marker. This will help you make an exact match.


Overheating can lead to transmission failure. The Check Engine Light will normally turn on when this occurs. The failure of the transmission cooling hose is usually caused by leaks in the rubber part of the hose. There are simple steps you can take that will prevent this from happening.

First, remove the transmission hose and replace it with a brand new one. This can be easily done at a retail shop. Next, inspect the hose. While rubber hoses are often used as transmission lines, they are highly susceptible to damage. They can even blow out and block the valve bodies in extreme cases.

The specification of a new hose should be the same as the original. Make sure to look for the SAE J-spec number on the original hose. This number will help you determine whether the replacement is made of quality rubber. Also, ensure that the hoses meet SAE J20R3 Class C2 or higher.

A new rubber transmission cooling hose can help save you money by providing the cooling fluid needed to prevent the transmission from overheating. Although it’s a temporary solution, it’s better to have a larger transmission cooling system installed. A rubber transmission hose may be cheaper and easier than a new, metal transmission line. However, it must be certified.

It is important to inspect the clamps before replacing a rubber transmission coolerhose. The clamps must be correctly aligned with the internal fittings and not too close to sealing bead. If the clamps are too loose, the hose may leak cold fluid. If this is the case, you may have to replace the spring clamp or hose. To ensure the correct layout, you should rotate the clamps.

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