Hummer H3 GMT345 Alternator
New, used, or aftermarket – from sellers across Europe.
Alternator for your Hummer H3?
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Find Hummer H3 parts online
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About this part
The alternator charges the battery and powers the electrics while the engine runs. A failing alternator causes dimming lights, a dying battery and eventually a vehicle that won't start.
Frequently asked questions
What should I check when ordering a replacement alternator?
Match the exact engine code and model year, as alternators differ in output (amps) and mounting. Check whether the pulley is included or needs to be transferred.
Is a remanufactured alternator a good option?
Yes – remanufactured alternators are tested to OEM specs and are often significantly cheaper than new. They're a reliable and economical choice for most vehicles.
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