Built for remote terrain and long-haul self-sufficiency, this 2001 Stewart & Stevenson M1079A1 is a freshly rebuilt, AWD military-grade expedition platform transformed into a fully functional motorhome and offered for sale by private party in Anaconda, Montana. Powered by a rebuilt Caterpillar 3126 diesel with just 1,000 miles since completion, this former military shelter carrier has been thoughtfully upgraded with high-speed gears, a 25,000-lb Sherpa Stallion winch, solar power, water storage, insulated living quarters, and a clean, minimalist habitat build designed for future expansion. Retitled as a motorhome and engineered with modularity in mind, this M1079A1 combines true go-anywhere capability with an intentionally simple, highly usable interior ready for backcountry travel, overland exploration, or extended off-grid living.
- Military-Bred Platform: The Stewart & Stevenson M1079A1 was originally developed as part of the U.S. military’s Family of Medium Tactical Vehicles (FMTV) program, designed to transport communications shelters and critical equipment through extreme terrain and hostile environments. With full-time AWD capability, massive ground clearance, portal-style durability, and commercial-grade underpinnings, the M1079A1 has become one of the most sought-after military expedition platforms for serious overland builds.
- Fresh CAT Power: Power comes from a fully rebuilt Caterpillar 3126 turbodiesel completed by Utah Diesel Center and paired with an automatic transmission and upgraded high-speed gears for improved highway drivability. Supporting upgrades include new transmission cooler lines, rebuilt steering components, U-joints, CTIS tire valves, rebuilt air/hydro system, cab lift cylinder, rebuilt cab lock system, rear stabilizer bushings, block heater, and a heavy-duty front bumper with integrated 25,000-lb Sherpa Stallion winch.
- Purpose-Built Exterior: Unlike many heavily modified expedition rigs, this build intentionally preserves the integrity of the military habitat by avoiding roof penetrations or irreversible structural changes. Finished in subdued camouflage and sitting on aggressive military-spec tires, the truck features LED running lights, a hitch-mount plate, 2.5-inch Alumna tow hitch, military-to-civilian trailer plug conversion, and glad-hand air hose provisions for trail-side utility and recovery support.
- Clean, Modular Habitat Build: The insulated military habitat has been upgraded with an additional inch of rigid foam insulation plus half-inch plywood backing for improved thermal efficiency and strong mounting surfaces throughout the cabin. Interior amenities include a full-size mattress with HyperVent pad, dual-burner propane stove, stainless sink with Gimili faucet, Iceco dual-zone 63.4-quart fridge/freezer on a slide system, reading lights, USB charging ports, wall-mounted ventilation fan, and simple, durable cabinetry designed around future customization flexibility.
- Off-Grid Ready: Designed for extended off-grid travel, the habitat includes a 400W Renogy solar system feeding dual 100Ah batteries alongside a 16-gallon fresh water tank, 4-gallon grey water system, and SeaFlo water pump. With conduit already run throughout the habitat for future upgrades and expansion, this M1079A1 offers an ideal foundation for buyers looking to continue refining an already highly capable expedition platform.
Whether you’re looking for a minimalist overland basecamp, a capable off-grid hunting and exploration rig, or a military-grade platform ready for the next phase of a dream expedition build, this Stewart & Stevenson M1079A1 delivers an exceptional combination of durability, capability, and thoughtful execution. With its freshly rebuilt Caterpillar diesel, insulated habitat, solar system, and modular interior layout, this AWD expedition truck is ready to travel deep into places most RVs and camper vans could never reach.
Powertrain & Chassis
- Caterpillar 3126 turbodiesel engine
- Fully rebuilt by Utah Diesel Center
- Approximately 1,000 miles since rebuild
- Automatic transmission
- AWD / 4WD drivetrain
- High-speed gearing upgrade
- New transmission oil cooler lines
- New U-joints
- Rebuilt steering linkage
- Rebuilt air/hydro system
- Rear stabilizer bushings
- CTIS tire valves
- Block heater
- Rebuilt cab lift cylinder
- Rebuilt cab lock
Exterior Equipment
- Military composite habitat
- Additional 1-inch rigid foam insulation
- Additional 1/2-inch plywood interior backing
- Heavy-duty front bumper
- 25,000-lb Sherpa Stallion winch
- LED running lights
- Hitch mount plate
- 2.5-inch Alumna tow hitch
- Military-to-civilian 24V-to-12V trailer plug
- Glad hand air hose connection
- Camouflage exterior finish
Habitat & Interior
- Fully insulated military habitat
- No roof penetrations
- Wall-mounted ventilation fan
- Conduit pre-run for future upgrades
- Full mattress
- HyperVent mattress pad
- Stainless sink
- Gimili faucet
- Dual-burner propane stove
- Iceco dual-zone 63.4-qt fridge/freezer
- Iceco fridge slide system
- Reading lights
- Multiple USB charging ports
- Durable wood interior finishes
- Modular cabinetry and storage
Electrical & Water Systems
- 400W Renogy solar system
- Dual 100Ah batteries
- 16-gallon fresh water tank
- 4-gallon grey water tank
- SeaFlo water pump
- Battery disconnect system
This thoughtfully upgraded 2001 Stewart & Stevenson M1079A1 expedition motorhome is available now in Anaconda, Montana. Inquire today to learn more about this highly capable off-grid adventure platform.