Product Introduction: China VI Dongfeng Mengshi 4x4 Off-Road Wading Ambulance | DFAC 4x4 Shelter-Type ICU Ambulance
I. Product Overview
The Dongfeng Mengshi 4x4 Off-Road Wading Ambulance is a high-mobility emergency medical vehicle built on the legendary military-grade Mengshi platform. Designed specifically for extreme terrain response and disaster relief operations, this all-terrain rescue vehicle combines proven military-grade off-road capability with advanced life support functionality. Powered by a 4.0L turbocharged Cummins diesel engine and featuring permanent four-wheel drive, this tactical ambulance is engineered to reach patients in flood zones, mountainous regions, remote wilderness areas, and natural disaster sites where conventional emergency vehicles cannot operate. With exceptional wading depth, ground clearance, and climbing ability, the Mengshi ambulance represents the gold standard for off-road patient transport and field emergency medical response in the most challenging environments on earth.
II. Core Specifications
Gross Vehicle Weight (GVWR): 4,900 kg (10,803 lbs)
Personnel Capacity: 7 persons (Driver + Crew + Medical Attendants)
Overall Dimensions (L x W x H): 5,670 mm x 2,310 mm x 2,475 / 2,600 mm (18.6 ft x 7.6 ft x 8.1 / 8.5 ft)
Interior Medical Cabin Height: 1,520 mm (5.0 ft) – Providing adequate headroom for attending medical staff
Wheelbase: 3,800 mm (12.5 ft) – Optimized for stability and off-road articulation
Engine Manufacturer: Dongfeng Cummins
Engine Model: D4.0NS6B195 Turbo Diesel Engine
Engine Displacement: 4.0L (4,000 cc) Turbocharged Diesel with Intercooler
Maximum Power Output: 143 kW (approx. 195 hp @ 2,300 rpm)
Maximum Torque: 730 Nm @ 1,200-1,700 rpm – Exceptional low-end torque for off-road crawling
Fuel Type: Diesel
Emission Standard: China VI – Environmentally compliant
Transmission: 5-Speed Manual Gearbox with synchronized gears
Drive System: Permanent Four-Wheel Drive (4x4) with selectable high/low range
Transfer Case: Two-speed with mechanical locking differential
Tire Specification: 305/80R18 Heavy-Duty Off-Road Tires with reinforced sidewalls
Wheel Configuration: 4 wheels (Single wheel configuration front and rear)
Fuel Tank Capacity: 120 Liters (31.7 US Gallons) – Extended range for remote operations
Maximum Speed: 120 km/h (75 mph)
Approach Angle / Departure Angle: 45° / 21° – Exceptional for steep terrain negotiation
Front Overhang / Rear Overhang: 630 mm / 1,240 mm (2.1 ft / 4.1 ft)
Ground Clearance: 380 mm (15.0 inches) – Under differentials
Minimum Turning Radius: 8.5 meters (27.9 ft) – Surprisingly maneuverable for vehicle size
Maximum Climbing Gradient: 60% (Approximately 31 degrees)
Maximum Side Slope Stability: 40%
Maximum Water Fording Depth: 750 mm (29.5 inches) – Standard configuration
Vertical Obstacle Clearance: 400 mm (15.7 inches)
Trench Crossing Width: 700 mm (27.5 inches)
Operating Temperature Range: -41°C to +46°C (-42°F to 115°F)
III. Exterior Dimensions, Materials & Design Philosophy
The Dongfeng Mengshi ambulance features a purpose-built off-road body precision-mounted on the legendary military-grade chassis. The exterior dimensions are carefully optimized to balance maximum tactical mobility with sufficient interior workspace for comprehensive patient care. The vehicle stands at 2,475mm (or 2,600mm with optional roof-mounted ventilation fan) in height with a width of 2,310mm, providing a stable, low-center-of-gravity platform for extreme terrain navigation. Side protection rails are integrated into the skirt design, with ground clearance at side skirts measuring 530mm, allowing the vehicle to slide over rocks without body damage. The rear bumper features a welded Q235A carbon steel protective structure with a 100mm x 100mm cross-section and 410mm ground clearance, ensuring durability during steep departures and preventing hang-up on obstacles.
The design philosophy emphasizes "military-grade durability meets medical functionality." The body utilizes high-strength steel frame construction with multi-layer anti-corrosion coatings suitable for all-weather operation in the harshest environments, from arctic cold to desert heat. The exterior features standard emergency medical markings and high-visibility reflective graphics compliant with international standards for emergency scene identification. The interior is designed with infection control as a priority, featuring seamless surfaces, rounded corners to prevent bacterial growth, and materials rated for medical-grade disinfection. The completely flat floor construction allows for flexible equipment mounting, easy cleaning, and rapid decontamination after field operations in contaminated environments.
IV. Structural Advantages
Engine & Powertrain Performance: The 4.0L Dongfeng Cummins turbo-diesel engine delivers 143 kW (195 hp) and an exceptional 730 Nm of torque from just 1,200 rpm. This low-end torque characteristic is essential for technical off-road crawling, steep grade climbing, and maintaining momentum on loose surfaces without wheel spin. The engine is certified to China VI emission standards, combining environmental responsibility with the rugged reliability required for military-grade applications. The powerplant is designed for continuous operation in extreme environments, from high-altitude plateaus exceeding 4,500 meters to desert heat exceeding 46°C, without performance degradation.
Transmission & Drivetrain Configuration: The robust 5-speed manual transmission with synchronized gears is mated to a permanent four-wheel-drive system featuring a two-speed transfer case with selectable high and low ranges. This tactical drivetrain allows drivers to seamlessly adapt to changing terrain conditions, from high-speed desert running in high range to low-speed technical rock crawling in low range where torque is multiplied for maximum control. The drivetrain incorporates a mechanical locking differential, ensuring maximum traction in deep mud, snow, sand, and loose gravel by forcing both wheels on an axle to turn together regardless of surface conditions.
Axles & Suspension Engineering: The Mengshi features heavy-duty portal axles with large-travel independent suspension using double wishbones at all four corners. This sophisticated suspension design provides exceptional wheel articulation, maintaining continuous tire contact on severely uneven terrain profiles where lesser suspensions would leave wheels dangling uselessly. The ground clearance of 380mm (approximately 15 inches) measured at the differentials allows the vehicle to clear large rocks, fallen logs, and debris that would completely immobilize standard ambulances. The vehicle can traverse vertical obstacles up to 400mm high and cross trenches up to 700mm wide without high-centering.
Extreme Off-Road Performance Capabilities: This expedition ambulance is engineered for serious off-road work with verified performance specifications that exceed any other production ambulance globally. The maximum climbing gradient of 60% (approximately 31 degrees) allows ascent of severely steep mountain tracks, while sustained grade holding capability of 40% ensures safety on long descents. The water fording depth of 750mm (approximately 30 inches) standard enables river crossings and operation in deeply flooded urban environments where flash floods have stranded conventional vehicles. All critical electrical and mechanical components are waterproofed and vented to high positions to prevent water ingestion during wading operations.
Braking & Safety Systems: The vehicle is equipped with ABS (Anti-lock Braking System) from YF8/Wuhan Yuanfeng Automotive Electronic Control Systems, providing controlled, steerable braking on low-traction surfaces such as gravel, ice, and wet grass. The braking system is hydraulic with large-diameter front and rear disc brakes providing fade-resistant stopping power even during repeated emergency braking on steep descents. Side skirts serve as integrated rock sliders and side impact protection, while the rear step bumper is heavily reinforced to serve as a departure angle ramp and tow point without compromising structural integrity.
V. Product Features & Manufacturer Advantages (Chengli Group)
Exceptional Off-Road Mobility: The Dongfeng Mengshi 4x4 ambulance inherits the legendary off-road capability of its military predecessor, earning the reputation which translates to "Fear no mountain height or road danger, the Mengshi leads the way." With 60% climbing capability, 750mm wading depth, and 380mm ground clearance, this vehicle can reliably reach patients in locations inaccessible to any other ambulance, including mountain rescue scenes, flooded communities, forest fire camps, and disaster zones with completely destroyed infrastructure.
Comprehensive Patient Care Systems: The medical module includes a full aluminum alloy auto-load stretcher system with patient restraint straps for safe transfer, an oxygen inhalation equipment cabinet, and a complete oxygen delivery system with dual 10L cylinders and multiple wall-mounted terminals for continuous respiratory support during transport. The interior features a dedicated (oxygen equipment cabinet) and an integrated (oxygen supply system) with hidden piping to prevent snagging and damage during off-road articulation.
Medical Compartment Features: The patient area includes a UV sterilization lamp for thorough infection control between calls, four ceiling-mounted LED examination lights providing shadow-free illumination, and rear scene lighting for safe night operations in unlit wilderness areas. The climate control system features separate front and rear HVAC units with a powerful rear air conditioning system specifically designed to maintain patient comfort even when the vehicle is stationary in high-heat environments. The flooring system combines (eco-friendly corrosion-resistant laminated wood substrate) with medical-grade (wear-resistant vinyl) that is flame-retardant, slip-resistant, mold-resistant, easy to clean, and resistant to chemicals, acids, and bloodborne pathogens.
Electrical & Power Systems: A 500W pure sine wave inverter provides stable, hospital-grade 220V power to multiple Schuko outlets for operating medical devices during transport. The electrical distribution system is designed for field reliability, with weatherproof connectors, sealed junction boxes, and circuit breakers accessible from within the cabin. All wiring is loomed and secured to prevent chafing during vehicle articulation.
Chengli Group Advantage – Premier Off-Road Ambulance Manufacturer: As a leading specialty vehicle manufacturer in China with decades of engineering experience, Chengli Group specializes in creating customized emergency vehicles for the world's most demanding operational environments. Our strategic partnership with Dongfeng ensures that the Mengshi chassis retains its full manufacturer warranty and military-grade structural integrity while being professionally transformed into a fully functional mobile medical facility. Chengli's dedicated engineering team specializes in integrating complex medical systems—including oxygen delivery networks, vacuum suction systems, stable electrical power distribution, and redundant climate control—into the vehicle architecture in ways that withstand the severe vibration and continuous shock of serious off-road travel that would destroy standard ambulance conversions. Our factory-direct business model provides highly competitive wholesale pricing on these specialized tactical vehicles, while our comprehensive nationwide service network ensures parts availability and technical support are always accessible. Whether for military medical evacuation units, government disaster response agencies, international mining operations, petroleum exploration camps, or humanitarian aid organizations, the Dongfeng Mengshi 4x4 Off-Road Wading Ambulance represents the ultimate engineering achievement in combining extreme off-road mobility with advanced patient care capability in a single, reliable, combat-proven platform.
