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Why choose GMPartsGiant

  • Large Inventory

    The best site to buy Hummer H3 genuine parts for years has been GMPartsGiant.com. We're the best online parts and accessory store for your Hummer H3. GMPartsGiant.com offers a large parts and accessory inventory to cover all your vehicle's repairs. Feel free to browse through our genuine Hummer H3 parts and accessory catalog to find all your vehicle's needs.

  • Fast Shipping Times

    All of our Hummer H3 auto parts and accessories are expedited directly from verified dealers and backed by the manufacturer's warranty. Our experienced team ensures the orders are packed to provide quick transit times. The majority of the orders are shipped out within a couple of business days to get the parts out to you as fast as possible.

  • Low Prices

    Our low prices say it all. You can rest assured that you will always receive unbeatable prices on OEM Hummer H3 parts. Our giant inventory is beyond compare and has everything you need at an extraordinary value not found anywhere else. Whether you're restoring an old vehicle or upgrading the performance of your vehicle you can count on the quality of our products without hurting your bank account.

Popular Genuine Hummer H3 Parts

Shop Genuine Hummer H3 Parts with GMPartsGiant.com

The Hummer H3 is an off-road vehicle introduced in 2006, and, compared to the H2, the model is 16.9 inches (429 mm) shorter, 6 inches (152 mm) shorter, and 6.5 inches (165 mm) narrower. While the interior no longer has the same wide center console, instead it has a two- or three-seat front layout with an extra seat in the middle. It was equipped with a 3.5 liter straight-5 cylinder engine that produced 220 hp (160 kW) and 225 lb. ft. (305 Nm) of torque accompanied by a standard five-speed Aisin AR5 manual transmission and also offers an optional Hydra-Matic 4L60-E four-speed automatic transmission. Such engine was replaced by a 3.7-liter LLR, which produced 242 hp (180 kW) and 242 lb. ft. (328 Nm) of torque and statistics were revised to 239 hp (178 kW) and 241 lb. ft. (327 Nm). For its off-road performance, it H3 is equipped with a two-speed, electronically controlled full-time four-wheel-drive system, letting the vehicle move at a speed of 5mph in 27 inches of water and 20mph in 20 inches of water. It also has a cargo that could be expanded when the rear seats are folded down.

Maintaining your Hummer H3 in peak condition requires vigilance and an understanding of common issues. Long-term engine operation can degrade performance, with symptoms like poor fuel efficiency, hesitation during acceleration, and difficulty starting, often signaled by loud knocking sounds or an illuminated Check Engine Light. Regularly inspect the air filter, intake manifold gasket, drive belt, and cylinder head gasket to prevent these issues. The H3, being a modern model, also houses many electrical components susceptible to wear and tear. Known weak points include the fuel pressure regulator, which can lead to faulty AC auto mode, inconsistent cooling, and incorrect outdoor temperature readings, and the window regulator, which, if faulty, necessitates multiple button presses to roll the window up or down and produces clicking sounds from the door. Proactive maintenance, such as replacing the windshield wiper at least once a year, ensures clear visibility and reduces accident risk. Regular attention to the cabin air filter, fog lights, headlights, and wheel seals also contributes to safe and comfortable driving.

Originating directly from Hummer, OEM parts excel in quality, longevity, and fitment. They undergo severe quality testing, ensuring its safety, durability, and performance that matches your original parts. Our website has a huge selection of Hummer H3 parts, such as Transmission - Manual, Maintenance Parts, Fluids, Capacities, Electrical Connectors at the best prices in the industry. If you need any genuine Hummer H3 parts, including Rear Body Structure, Moldings & Trim, Cargo Stowage, Transfer Case, we ship them to your door step as we offer a fast delivery service. In addition, all OEM parts are backed by the manufacturer's warranty.