BRIEF
The Unimog U5023 4×4 forest service fire truck, produced by CSCTRUCK Fire Rescue Truck, is a purpose-built off-road firefighting solution designed for rapid response in forests, mountains, and other hard-to-reach environments. Built on the legendary Mercedes-Benz Unimog chassis, this vehicle combines exceptional mobility, durability, and firefighting capability in one compact yet powerful platform.
Powering the U5023 is the Euro VI OM 934 LA diesel engine, delivering 170 kW (231 hp) and an impressive 900 Nm of torque at 1,400 rpm. This strong low-end torque ensures reliable traction and climbing ability on steep slopes and uneven terrain. The engine is paired with a UG 100/8 transmission and a robust SAE-2 single-plate dry clutch, providing smooth power delivery and precise control in demanding conditions.
The truck features portal axles with torque tube guidance and coil springs, giving it outstanding ground clearance and axle articulation. With selectable all-wheel drive, approach and departure angles of 44° and 50°, and a breakover angle of 31°, the Unimog U5023 excels where conventional fire engines cannot operate. Its wading depth of up to 1,200 mm (optional) further enhances its ability to reach fire scenes across rivers, mud, and flood-prone areas.
Despite its off-road focus, the U5023 fire truck offers a practical payload capacity with a maximum gross weight of 14.5 tons and a well-designed 4,100 × 2,280 × 1,400 mm body space, allowing flexible integration of water tanks, pumps, hose reels, and firefighting equipment. Pneumatic disc brakes, a 24-volt electrical system, and multiple tire options ensure safety, reliability, and adaptability.
Overall, the Unimog U5023 forest service fire truck is a highly capable and dependable choice for wildfire suppression and emergency response in the most challenging terrains.
FEATURES
- Exceptional Off-Road Mobility
Built on the Mercedes-Benz Unimog U5023 chassis, the truck features portal axles, coil springs, and selectable all-wheel drive. Its high approach, departure, and breakover angles allow it to operate effectively in forests, mountains, sand, mud, and rugged terrain where standard fire engines cannot reach. - Powerful Euro VI Diesel Engine
The OM 934 LA engine delivers 170 kW (231 hp) and 900 Nm of torque at low engine speed, providing strong climbing ability, reliable traction, and stable performance during demanding wildfire and rescue operations. - Outstanding Ground Clearance and Water-Crossing Ability
The portal axle design ensures excellent ground clearance, while the optional 1,200 mm wading depth enables the vehicle to cross rivers, flooded roads, and muddy environments without compromising operational readiness. - Flexible Firefighting Body Configuration
With a maximum gross weight of 14.5 tons and a spacious body layout, the U5023 can be equipped with water tanks, fire pumps, hose reels, foam systems, and specialized forest firefighting tools tailored to different mission requirements. - High Reliability and Operational Safety
Equipped with pneumatic disc brakes, a robust drivetrain, and a 24-volt electrical system, the truck delivers dependable braking performance, electrical stability, and long-term durability in harsh firefighting and emergency response conditions.
SPECIFICATION
Item |
Specification |
|---|---|
| Engine (Euro VIe) | OM 934 LA |
| Power (kW / hp) | 170 / 231 |
| Cylinders | 4-cylinder, inline |
| Displacement (cm³) | 5,132 |
| Torque at Rated Speed | 900 Nm @ 1,400 rpm |
| Clutch | SAE-2 Ø395 mm single-plate dry clutch (organic) |
| Transmission | UG 100/8 |
| Axles | Portal axles with torque tube guidance and coil springs |
| Front Axle (Model) | 737,223 |
| Rear Axle (Model) | 747,223 |
| Electrical System (V) | 24 |
| Battery Capacity (Std / Opt, Ah) | 100 / 170 |
| Fuel Tank Capacity (Std / Opt, L) | 160 / 235 |
| Steering System / Max Pressure | RB 8095 / 170 bar |
| Brakes | Pneumatic disc brakes |
| Minimum Tires (Tire / Rim) | 365/80 R20 |
| Maximum Tires (Tire / Rim) | 455/70 R24 |
| Drive Type | Selectable all-wheel drive |
| Wheelbase (mm) | 3,850 |
| Max Permissible Gross Weight (t) | 14.5 |
| Max Front Axle Load (t) | 6.4 |
| Max Rear Axle Load (t) | 8.8 |
| Approach / Departure Angle | 44° / 50° |
| Breakover Angle | 31° |
| Turning Diameter (m) | 16.4 |
| Body Space (L × W × H, mm) | 4,100 × 2,280 × 1,400 |
| Wading Depth (Std / Opt, mm) | 800 / 1,200 |
| Top Speed (km/h) | 89 |






















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