United States Oshkosh Defense
HEMTT M977
Eight-wheel-drive diesel tactical logistics truck in US Army service since 1982, providing heavy cargo, fuel, and recovery support.
Compiled from public sources ·primary reference ↗
100
km/h
483
km range
Procurement snapshot
Availability & export
US ITAR-controlled
Export needs U.S. State Dept (DDTC) approval; end-use & re-transfer restrictions apply.
Channel: Foreign Military Sales (FMS) or Direct Commercial Sale
Fielded & proven
Operator data not public
Status: active.
Lifecycle cost (est.)
No public unit price to model from. Why so few systems publish one →
Interoperability
No standardised NATO calibre / datalink detected in public specs.
Competitive field
16 comparable systems from 8 other manufacturers
Counted in the WeaponSpecs database: transport aircraft built by another manufacturer. A count of what this catalog holds, not a survey of the whole market. See the alternatives →
Derived guidance from public data, export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.
Full specifications
Performance
Speed, range, altitude and engagement capability.
| Max speed Maximum level speed. For aircraft this is at optimal altitude; for ground vehicles, top road speed. Higher means faster response and better kinematic performance. | 100 km/h |
|---|---|
| Range Maximum distance: ferry range for aircraft, operational range for vehicles, maximum engagement distance for missiles. Higher means more standoff or persistence. | 483 km |
Physical
Dimensions, weight and crew.
| Length Overall length including gun/probe where applicable. | 10.39 m |
|---|---|
| Width Overall width, matters for rail/road transport of vehicles. | 2.44 m |
| Height Overall height. Lower profile is harder to spot and hit for ground vehicles. | 3 m |
| Empty weight Weight without fuel, ammunition or crew. | 19,278 kg |
| Combat weight Fully loaded weight. Lighter eases transport and bridging limits; heavier often means more armor. | 31,298 kg |
| Crew Personnel required to operate. Fewer reduces exposure; autoloaders trade a loader for mechanical complexity. | 2 |
| Cargo payload Maximum cargo the transport can carry. Higher means more lift per sortie. On an unmanned ground vehicle, this is the maximum mission payload the platform carries, including a weapon station. | 9,072 kg |
Propulsion
Engine, power and fuel.
| Engine Powerplant model and type. | Caterpillar C15 15.2-litre 6-cylinder inline water-cooled diesel |
|---|---|
| Engine power Engine output power. Higher moves more weight faster. | 515 hp |
| Fuel capacity Internal fuel volume. | 587 L |
| Propulsion type Turbofan, turboshaft, diesel, gas turbine, solid-fuel rocket, ramjet… | diesel |
Specifications compiled from public Oshkosh Defense and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-04.
Compare with rivals
See how it stacks up
Airbus Defence and Space A330 MRTT Frequently asked questions
What is the top speed of the Oshkosh Defense HEMTT M977? +
The Oshkosh Defense HEMTT M977 has a maximum speed of 100 km/h.
What is the range of the Oshkosh Defense HEMTT M977? +
The Oshkosh Defense HEMTT M977 has a maximum range of 483 km.
How much does the Oshkosh Defense HEMTT M977 weigh? +
The Oshkosh Defense HEMTT M977 has a combat weight of 31,298 kg.
How many crew does the Oshkosh Defense HEMTT M977 require? +
The Oshkosh Defense HEMTT M977 requires a crew of 2.
What engine does the Oshkosh Defense HEMTT M977 use? +
The Oshkosh Defense HEMTT M977 is powered by the Caterpillar C15 15.2-litre 6-cylinder inline water-cooled diesel.
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