Radiators & Parts for HUMMER H3

Do these parts fit your vehicle? Find out now.

Hummer H3 Radiator Parts

Radiators and the various parts involved with the cooling system are critical for your Hummer H3. Its important to have working parts at all times. Learning more about the components in the system will ensure you get quality parts for your H3.

What does a radiator do?

A radiator is a heat exchanger that is used to cool the internal combustion aspect of the engine. It deals with the coolant that comes out of the engine head to cool it down before it cycles through again. If there is something not functioning properly, it can lead to the vehicle overheating, and that can also affect the performance of your Hummer and damage other components.

What are the main components of a Hummer cooling system?

In addition to the radiator, there are several major components of the cooling system in the Hummer H3. These components include:

  • Radiator cap: This is the cap that goes onto the radiator to form a good seal.
  • Hoses: These hoses transport the coolant throughout the system.
  • Overflow tank: This is the component that holds any excess coolant.
  • Fan assembly: This assembly includes a fan that does the majority of the cooling.
  • Coolant bottle: This is the reservoir that holds the coolant.
How do you install Hummer H3 radiator parts?

When youre ready to install a radiator or any of the components involved, you will want to open the hood and let the engine cool down. Once its cool, identify where the component is located. You may have to remove hoses and clamps in order to access various radiator parts. Be sure that you use the right tools for the job, and be careful that you dont damage any components in the process. Once you have replaced the component, you can then reverse the instructions to get everything back together.

How do you add coolant to the car?

Adding coolant to your Hummer H3 is a relatively simple process. You will want to loosen the hose clamps and then pour the coolant into the reservoir. Be sure to add the same coolant thats already in place. You dont want to add water as that can reduce the strength of the coolant and make your H3 more vulnerable to corrosion and other problems.

What are OEM and aftermarket radiator parts?

If a manufacturer makes a part specifically for Hummer to use at the factory and be branded as a Hummer part, it is a genuine Original Equipment Manufacturer, or OEM. Otherwise, the accessories are aftermarket parts, which means that the components are made from a company with no affiliation with Hummer. Both OEM manufacturers and aftermarket manufacturers make high-quality parts.