How to Plug Transmission Cooler Lines on Radiator

Plugging transmission cooler lines on a radiator is not a common practice and is generally not recommended. The transmission cooler lines play a critical role in keeping the transmission fluid at the right temperature by passing it through the radiator for cooling.

If you’re considering plugging the transmission cooler lines, there might be specific reasons behind it. However, I strongly advise against doing so unless you have a good understanding of the consequences and have consulted with a professional mechanic.

If you’re facing issues with the transmission cooler lines or radiator, it’s best to address the root cause of the problem rather than attempting to bypass or plug the lines. Ignoring transmission cooling can lead to severe damage to the transmission, which can be expensive to repair.

If you suspect a problem with the transmission cooler lines or the radiator, I recommend taking the following steps:

  1. Inspection: Check for any visible leaks or damage in the transmission cooler lines or radiator.
  2. Professional Help: Take your vehicle to a qualified mechanic or automotive shop to diagnose the issue accurately.
  3. Repair or Replacement: Depending on the problem, the mechanic will recommend either repairing or replacing the faulty components.
  4. Transmission Fluid Service: If needed, get the transmission fluid flushed and replaced according to the manufacturer’s recommendations.
  5. Regular Maintenance: Keep up with regular maintenance to ensure the proper functioning of the transmission and cooling system.

In summary, tampering with the transmission cooler lines can have severe consequences for your vehicle, and it’s essential to get professional advice and assistance if you’re facing any cooling system issues.

Why Does My New Radiator Have Extra Ports?

Are There Any Special Tools Needed to Install the Transmission Cooler Lines on My Radiator

Yes, special tools are required to install the transmission cooler lines onto your radiator.

The following list details the necessary tools:

• Socket set: Used to secure the nuts and bolts into place.

• Ratchet: A ratchet is used to turn the sockets in order to tighten or loosen them.

• Pliers: Needed for manipulating hoses and other components as needed.

• Wrench set: Used for removing existing parts that need replacing with new ones during installation.

Additionally, it would be beneficial to have an oil filter wrench on hand in case you need additional leverage when performing maintenance on your car’s transmission system.

How to Plug Transmission Cooler Lines on Radiator


What Type of Hose Clamp Do I Need to Attach the Transmission Cooler Lines to the Radiator

The type of hose clamp you need to attach the transmission cooler lines to the radiator is a worm-gear clamp. Worm-gear clamps are adjustable and provide uniform pressure around a pipe or hose.

Here are some features of this type of clamp:

* Made from stainless steel, corrosion resistant

* Tightens with screwdriver or socket wrench

* Available in different sizes for various applications

Worm-gear clamps can be used in automotive, industrial, marine, and other engineering projects. They offer an efficient way to secure hoses and pipes without too much effort.

How Tight Should I Tighten the Clamps

It is important to ensure the clamps are tightened properly, but not too tight.

Here are a few tips on how to determine the right level of tension:

• Check that all screws and bolts are at an even tension.

• Look for any signs of wear or damage on the clamp parts.

• Test the fit by gently tugging before fully tightening them down.

With these simple steps, you can make sure your clamps are secure without risking any damage from over-tightening them.


In conclusion, plugging transmission cooler lines on the radiator is a simple yet important task that requires careful attention to detail. It should be completed with care and patience so as not to cause any damage or leaks in the system. By following these steps correctly, you can ensure that your vehicle’s transmission stays cool and efficient for years to come.