Hummer H3 GMT345 Water Pump
New, used, or aftermarket – from sellers across Europe.
Parts availability
Hard to find – this is exactly what hank is made for!
Estimated price range
Widely available Limited Hard to find
Last updated: 26.07.2026, 06:13
Water Pump for your Hummer H3?
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Find Hummer H3 GMT345 parts online
hank's free AI report searches specialized shops for Hummer H3 GMT345 parts, including us-car-teile-center.de, Customville American & Auto Electric Supplies Limited.
About this part
The water pump on your H3 GMT345 circulates coolant between the engine and radiator. A failing pump causes overheating, leaks and in severe cases engine damage – timely replacement is essential.
Frequently asked questions
What should I check when buying a replacement water pump for the Hummer H3?
Match the exact engine code and the model year of your H3 GMT345. Check whether the gasket and thermostat housing are included, as these are commonly replaced together.
Should I replace the timing belt and water pump together?
If the timing belt drives the water pump, yes. The labour to access both overlaps significantly, making it far more cost-effective to replace them at the same time.
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