Many of the parts of the engine create heavy friction in your Hummer H3. The purpose of a car's radiator is to remove heat from the engine block so that it does not overheat. Engine failure occurs when an excess of friction is present and the pistons are not able to move freely within the cylinders. The mixture of water and anti-freeze gets pumped through the chambers that assist in absorbing excess heat, drawing it away from important parts of the engine.

When coolant leaves the engine block, it passes through the radiator via a radiator hose. The radiators function is to cover a maximum amount of surface area to keep the engine cool. You will likely see that your radiator is at the front of the vehicle, just behind the grill, which allows air from outside of the car to cool down the radiator.

You can purchase parts anytime and have them shipped directly to your address. From the listings below choose one of the Hummer H3 radiators that fit your car. We have thousands of automotive parts in stock, so you're sure to find exactly what you need. Save yourself cash as well as a trip to the store by browsing through the listings to find the right parts.

hummer h3 canyon colorado 3.7 lower radiator hose Price: 33.42 End Time: 18h 39m

06 07 08 09 Hummer H3 Radiator Air Deflector/Baffle Price: 39.99 End Time: 2d 12h 30m

08 09 10 HUMMER H3 5.3L RADIATOR LOWER AIR BAFFLE Price: 31.99 End Time: 3d 15h 35m

06 07 08 09 10 HUMMER H3 RADIATOR LOWER AIR BAFFLE Price: 40.00 End Time: 3d 15h 35m

06-On Fender & Radiator Retainers Escalade, Denali, Tahoe, Yukon, Hummer H3 (25) Price: 13.20 End Time: 6d 13h 47m

Hummer H3 Radiator Lower Air Baffle Price: 75.00 End Time: 13d 12h 37m

HUMMER H3 H3T NEW RADIATOR 2006 2007 2008 2009 2010 Price: 229.00 End Time: 6d 7h 9m

Drake Off Road Hummer H2 H3 & H3T HUMMER Logo Billet Radiator Cap Cover Price: 24.95 End Time: 20d 19h 10m

Hummer H3 Lower Radiator Grille Price: 75.00 End Time: 24d 23h 25m

06 07 08 09 10 2010 Hummer H3 Auto Engine Radiator NEW Price: 299.95 End Time: 12d 14h 57m