Transmission Cooler Lines FAQs

Transmission cooler lines cycle hot transmission fluid from the transmission to the transmission cooler. The transmission cooler is sometimes part of the main radiator and sometimes its own smaller radiator. This cools the fluid down to prevent the transmission from overheating. Damaged or broken transmission lines should be replaced immediately to prevent any transmission damage.

Let's discusses some of the most common questions regarding transmission cooler lines.

Will A Leaking Coolant Line Ruin My Transmission?

Yes. A leaking transmission coolant line can lead to serious transmission issues. If the coolant line is leaking, it can cause the transmission to overheat. This can damage internal components, potentially requiring expensive repairs or a transmission replacement. 

What Causes Transmission Cooler Lines To Fail?

• Corrosion
• Aging
• Damage

Transmission cooler lines can fail due to corrosion, physical damage from road debris or accidents, and age. Over time, corrosion can weaken the lines, making them more likely to break. Impact damage can crimp or rupture the lines, causing fluid loss or a lack of flow.

How Do I Know If My Transmission Coolant Line Is Leaking? 

• Slipping gear changes
• Leaking fluid
• Low fluid levels
• Grinding or whining sounds from the transmission system

Signs of a leaking transmission coolant line include transmission fluid under your vehicle or low transmission fluid levels. Listen out for unusual noises from the transmission such as grinding or whining.

Does Oil Go Through My Transmission Lines?

No. Transmission lines transport transmission fluid, not engine oil. The transmission fluid is used to lubricate, cool, and maintain the proper functioning of the transmission system. Using oil will cause damage to the lines and the transmission. 

Can I Replace My Transmission Cooler Lines With Power Steering/Fuel/Heater Hose?

No, using power steering, fuel, or heater hoses as substitutes for transmission cooler lines is not recommended. These hoses are not designed to handle the temperature and pressure conditions of transmission fluid.

They can crack, rupture, or tear under heat and pressure, which can damage the transmission. 

Can Brake Lines Be Used For Transmission Lines?

No. Brake lines should not be used as transmission lines. Transmission lines need to withstand different pressure levels and temperatures. Brake lines are also designed to transport brake fluid, not transmission fluid. That is why using brake lines could result in inadequate cooling and eventual transmission failure.

Do I Need To Flush My Transmission Lines?

Yes. It’s advisable to flush the transmission fluid whenever the lines are being replaced and if there is evidence of contamination. This helps prevent debris from damaging the new lines and transmission. Old fluid will also be less effective at cooling the transmission. 

Do Transmission Lines Get Clogged?

Yes. Transmission lines can get clogged over time due to debris and contaminants in the fluid. Clogged lines can restrict the flow of fluid, causing issues such as overheating and poor shifting performance.

How Much Do Transmission Cooler Lines Cost?

The cost varies based on the make and model of your vehicle. Most of our lines range between $90 and $200. We also offer inexpensive tools to help make the job easier and our knowledgeable staff can help if you have any questions regarding the correct lines for your vehicle.

Can I Replace Or Install Transmission Cooler Lines Myself? 

Yes. Transmission cooler lines can be replaced in your own garage. You will need some basic mechanical knowledge and the right tools. LinesToGo can help with both.

All our lines come with detailed instructions, and we also offer handy tools to make the job easier. Our installation videos cover most of our products, too.

All our lines are pre-bent and use OEM fittings to aid with installation. 

Where Should I Buy Transmission Cooler Lines?

 

From LinesToGo, of course. We have a full range of transmission cooler lines that match or exceed OE quality and specifications. Our lines are made from Galfan® coated steel or 304L stainless steel for the best performance and longest life. 

Every line has OE end forms and fittings and are pre-bent. Ready to install. We also offer brake lines, fuel lines, engine oil cooler lines, and rack and pinion lines.

Give our experts a call on (855) 781-5992 or contact us online to order your replacement Transmission Cooler Lines today.