Hummer H1 I 6.6 SUV
224 kW305 PS300 hp705 Nm2006
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- Power
- 224 kW 305 PS · 300 hp
- Torque
- 705 Nm 520 lb-ft
- Length
- 4,686 mm
- Displacement
- 6,600 cm³
Under the bonnet of the Hummer H1 I 6.6 Alpha Duramax V8 turbo diesel SUV sits a 6.6-litre eight-cylinder diesel engine, good for 224 kW (305 PS) and 705 Nm of torque. In the H1 I 6.6 Alpha Duramax V8 turbo diesel, power reaches all four wheels through a five-speed automatic transmission.
No other diesel version of the H1 I matches its output among 4 diesel versions - that is 104% more than the entry 6.2 V8 diesel (110 kW).
Dimensions drawing
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grid 500 mm1 ft Side view: dashed lines mark the axles
Engine
| Engine code | LLY |
|---|---|
| Fuel | Diesel |
| Displacement | 6,600 cm³ 6.6 l · 403 cu in |
| Cylinders | 8 |
| Power | 224 kW 305 PS · 300 hp |
| Torque | 705 Nm 520 lb-ft |
Transmission
| Gearbox | Automatic |
|---|---|
| Gears | 5 |
| Drive | Four-wheel drive (4×4) |
Dimensions and weight
| Length | 4,686 mm 184.5 in |
|---|---|
| Width | 2,197 mm 86.5 in |
| Height | 2,007 mm 79.0 in |
| Wheelbase | 3,302 mm 130.0 in |
Production
| Body type | SUV |
|---|---|
| Years | 2006 |
| Generation | H1 I (1992–2006) |
Hummer LLY engine Compare size All H1 I versions All Hummer spec sheets
Data sources
Data checked by an editor against the sources below.
Data: 15 of 25 fields · 1 source · data changed 14 Oct 2026