How to Replace Coolant Reservoir Tank – Proper Guides

Coolant reservoirs are important because it’s a component of the cooling system. They are placed on the upper right side of the engine compartment. Since it’s a crucial part of the entire cooling system, it needs to work every day. But, sometimes they crack or leak due to its materials, design and location in some cases. 

So, you have to replace the coolant reservoir tank once this happens. This is simply a process that you mostly complete without complications. Today, we’ll discuss in detail how to replace coolant reservoir tank. Let’s dig deep and discover how you can replace your coolant reservoir tank.

How to Replace Coolant Reservoir Tank:

How to Replace Coolant Reservoir Tank

Coolant reservoir is located on the top of the engine compartment. Sometimes, you are confusing this with windshield washer reservoir. So, you have to be sure that this is the tank before you’re going to remove it.

In maximum time, you can change your coolant reservoir tank by using the common car tools. In some cases, you have to lift your car by using a floor jack and jack stands to reach at the underneath screw. Safety is anyhow another important concern. So, always use safety equipment such as safety glasses and gloves.

Step 1. Remove The Bolts

First,  remove the reservoir cap and put it on the side. There you get bolts on the front of the reservoir attached to the compartment. These bolts will secure the reservoir to the engine compartment. Locate these bolts and remove them by using a small flat screwdriver.

Step 2. Remove Coolant Hoses

There are hoses at the top of the coolant reservoir. Loosen the clamp that attaches the hose and remove these hoses. You can use a clamp removal tool to remove the hoses. 

There is also a lower coolant hose on the bottom of the reservoir. This house similarly secured the same types of clamp on top of the tank. So, you can apply a similar procedure as above, loosen the clamp and slide it down until it’s removed from the connection.

Step 3. Remove Electrical Connector

There will be an electrical connector in some coolant reservoirs. This electrical connector monitors the level of coolant. Push the safety clip and separate the electrical connector from the sensor. 

Step 4. Remove Old Reservoir

Now, it’s time to lose the old coolant reservoir from the compartment. Pick the coolant reservoir and remove it from the engine compartment.

Once you remove the old one, you have a chance of cleaning this space. So, clean the coolant, dirt or debris underneath the coolant reservoir area.

Step 5. Reconnect Electrical Connector

Again, you have to reconnect the electrical connector before removing the reservoir. Because this will be more difficult once you install a new one into the engine compartment.

Step 6. ReInstall New Coolant Reservoir

Visually verify the size, shape and fitting of your new coolant reservoir before you reinstall it. If you see any difference, again check the parts. Assure that the size, shape and fitting of the new reservoir are similar to the old one.

Accordingly, set the new coolant reservoir into the right position. Again, manually reinstall bolts and screws and tighten all of them at that time.

Step 7. Reconnect Coolant Hoses

clamp removal tool

You have to reconnect the lower coolant hoses and then the upper hoses to the new coolant reservoir. You can open the hose clamp by using a clamp removal tool.

Put the right position of the clamp so that the hose isn’t forced off when the system is under pressure. Similarly, reattach two top hoses by using the same process and secure these two hoses to the new coolant reservoir.

Step 8. Refill the Reservoir

Now, remove the reservoir cap and refill the new coolant reservoir. Check again the coolant level and fill the tank if required. There’s specific guidance on how much you fill the reservoir tank as well as which type of coolant you can use. Always follow the indication and fill-up the reservoir at the top of the indicator line. You can start the engine once everything is properly set.

Material Required to Replace Coolant Reservoir Tank:

The replacement materials will vary from model to model as well as manufacturers. However, there are some common tools you have to need for your replacement.

Note: You can only start this when the engine is cold and wasn’t running for an hour. As well as use safety equipment before doing this job.

Replacement Cost Of Coolant Reservoir Tank:


You can simply replace your coolant reservoir tank by yourself. This is an easy process that you complete without complications. Hopefully, you can easily get most of the part between the range from $5 to $50 on Amazon. You have to spend some extra cash to refill the tank after the installation.

But, when you’re not confident enough to do it yourself, you have another option too. Alternatively, an expert mechanic can also fulfil your task at the repair garage. Then the approximate cost goes $60 for parts and $80 for work. On average, the cost of replacing the coolant reservoir is $130. Take into consideration that, all of the cost depends on the car you have and the payments charged by the mechanic. It can change from the car’s manufacturer, model, making year also.


Coolant reservoir tank is a vital part of the entire cooling system. Once any crack or leaks occur, you have to replace the coolant reservoir. You can replace yourself by following our step to step guide. However, when you’re not confident enough to do it, you have to go to the repair garage. Here’s an expert mechanic who can accomplish this task for you.

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