The Pinnacle of Performance, Capability, Comfort
The H3 Alpha is the second member of HUMMER's exclusive Alpha series, representing the pinnacle of performance, both off the road and on it. It comes with a new, 5.3L V-8 engine that delivers 295 horsepower and 317 lb.-ft. of torque. Partnered with a four-speed automatic transmission and offering the towing capability that only a V-8 can, the 2008 H3 Alpha broadens HUMMER's range of versatile, do-anything and go-anywhere vehicles with a maximum towing capacity of 6,000 pounds – an increase of more than 33 percent over other H3 models.

   - Newest model in the performance-bred Alpha series
   - Powerful 5.3L V-8 powertrain offers 295 hp
   - Maximum towing increased to 6,000 pounds
   - Unique exterior / interior features, including Alpha badging

In addition to the V-8 engine, the H3 Alpha also includes the popular "Luxury" equipment package, the Chrome Appearance package, 16-inch chrome wheels, a 4.10 rear axle ratio and special Alpha identification, including a prominent tailgate badge, horn pad badge and embroidered front headrests with the "Alpha" insignia.

For a more accessorized appearance straight from the factory, the Alpha model can be combined with the H3X content, which includes bright roof crossbows, chrome fuel door, a body-color grille and unique spare tire cover, tires, wheels and center cap, and a brush guard. Additionally, Kachina offers a complete line of HUMMER Accessories. And because HUMMER stands for more than just off-road performance, the H3 Alpha builds on the style and refinement of the H3 lineup and offers a unique, instantly recognizable statement on the road.

The H3 is the newest model to carry the Alpha flag. HUMMER Alpha models represent the top in performance, capability and comfort. The H1 Alpha was the first of these ultimate HUMMERs, and like the H1, the new H3 Alpha offers a more powerful engine as well as unique styling and comfort features.

Award-Winning Interior Safety Enhancements
The H3 Alpha shares the same widely admired interior as all H3 models, including detail revisions and enhancements that have been implemented across the lineup. New child safety locks for the rear doors and easier-to-use power window switches were introduced during the '07 model year and reflect customers' input.

Also new for the H3 Alpha and the entire 2008 H3 lineup are standard head curtain side air bags; they were previously optional. Additional standard safety features now found on all H3 models include:

   - StabiliTrak electronic stability control system
   - Four-wheel antilock brakes with traction control
   - Dual front air bags with Passenger Sensing System
   - Tire pressure monitoring system
   - Vehicle-to-vehicle crash compatibility
   - LATCH rear child seat anchors

HUMMER's Rear Vision system and a navigation system are available. The Rear Vision system uses a camera mounted near the rear bumper to provide a view of objects directly behind the vehicle. Also, the safety and security of OnStar is standard, and its new Turn-By-Turn Navigation feature is available.

Powertrain Details
The H3 Alpha's 5.3L engine is a powerful and efficient member of GM's legendary small-block V-8 family. It is rated at 295 horsepower and 317 lb.-ft. of torque - ideal for such jobs such as towing personal watercraft up a mountain to the lake, and with little impact on fuel mileage. The 5.3L engine greatly broadens the H3's towing capability.

An aluminum cylinder block is used with the H3 Alpha's engine. It helps reduce overall mass and maintains a more desirable front-to-rear weight balance. Like all of GM's small-block V-8 engines, highlights include:

   - Deep-skirt cylinder block with cross-bolted main caps
   - High-flow cylinder heads
   - Electronic throttle control
   - 58X ignition system
   - E67 32-bit controller
   - Polymer-coated pistons with full-floating wrist pins
   - Returnless fuel system
   - Lightweight valvetrain
   - Steel camshaft
   - Low-restriction air intake system

GM's small-block V-8 engines are engineered to meet today's more stringent emissions standards. In fact, the H3 Alpha's V-8 engine beats the deadline for new, U.S. federal emissions standards by a year. And compared to truck engines of a decade ago, the small-block engine family is approximately 90 percent cleaner. Cast iron exhaust manifolds matched with four close-coupled catalytic converters help reduce cold-start emissions, which is the largest source of vehicle emissions.