The Hummer H3 is the smallest vehicle in the Hummer series, but has improved gas mileage and can ford a few more inches of water than it predecessor, the H2. One easy but often overlooked way to improve the performance and increase the longevity of your H3 is to routinely check and maintain your cooling system, and radiator in particular. The radiator is the heart and soul of your cooling system and minor problems with your radiator can result in major problems for your engine, from the benign such as decreased gas to mileage to the extreme such as engine fire. When the time comes to replace your Hummer H3 radiator, come to radiator.com for unbeatable prices and service. 
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