BRIEF
The Mercedes-Benz 18-ton water foam fire engine, produced by CSCTRUCK Fire Rescue Truck, is a high-capacity, heavy-duty firefighting vehicle engineered for rapid response to large-scale fires. Built on the robust Mercedes-Benz Arocs 4158 chassis, it features an 8×4 drive configuration that ensures outstanding traction, stability, and durability, even in challenging environments. Its OM473 LA engine, delivering 425 kW of power, complies with the EURO VI emission standard, supporting both eco-friendly performance and a maximum driving speed of 100 km/h, allowing swift deployment to emergency sites.
This tanker fire engine is designed for exceptional firefighting efficiency, with a 12,000 kg water tank and a 6,000 kg foam tank, providing an ample supply for sustained operations. At its heart is the powerful 8FC fire pump, offering a rated flow of 166 L/s at 1.0 MPa, enabling it to deliver large volumes of water with consistent pressure. The onboard Hale ESP 24 V DC vacuum pump achieves priming in ≤100 seconds, ensuring quick readiness during critical response moments.
For firefighting at a distance, the vehicle is equipped with an Elkhart PLKD150-7500EXM electric fire monitor, delivering up to 150 L/s at 1.0 MPa, with a reach of ≥90 m, ideal for tackling high or hard-to-access flames. Its integrated water-foam system allows seamless switching between media, making it highly effective against industrial, petrochemical, or large urban fires.
Combining a spacious cab, precision-engineered pumping system, and heavy-duty bodywork, this Mercedes-Benz 18-ton water foam fire engine stands out as a reliable solution for fire departments and industrial facilities. Its blend of high performance, modern technology, and rugged construction ensures superior firefighting capability, rapid response, and operational safety in demanding rescue and fire suppression missions.
FEATURES
- High-Capacity Firefighting System
- Equipped with a 12,000 kg water tank and a 6,000 kg foam tank, enabling large-scale fire suppression and extended operations without frequent refilling.
- Powerful Chassis and Drivetrain
- Built on a Mercedes-Benz Arocs 4158 chassis with an 8×4 drive configuration, powered by the OM473 LA engine delivering 425 kW (approx. 570 HP) and compliant with EURO VI emission standards.
- Advanced Pumping Equipment
- Features an 8FC fire pump providing a rated flow of 166 L/s at 1.0 MPa, complemented by a Hale ESP 24 V DC vacuum pump with a priming time of ≤100 s, ensuring fast water delivery during emergencies.
- High-Performance Fire Monitor
- Fitted with an Elkhart PLKD150-7500EXM electric fire monitor offering 150 L/s at 1.0 MPa and a throw range of ≥90 m, suitable for tackling fires in large industrial or urban areas.
- Operational Speed and Efficiency
- Capable of reaching a maximum driving speed of 100 km/h, allowing rapid deployment to fire scenes while maintaining excellent stability and reliability on diverse terrains.
SPECIFICATION
| Category | Details |
|---|---|
| Chassis | Mercedes-Benz |
| Product Name | Water Foam Fire Engine |
| Gross Vehicle Weight (Kg) | 38,000 |
| Curb Weight (Kg) | 19,350 |
| Cab Seating Capacity | 2 persons |
| Crew Compartment Capacity | 7 persons |
| Number of Axles | 4 |
| Wheelbase (mm) | 1,750 + 4,600 + 1,350 |
| Approach / Departure Angle (°) | 21 / 12 |
| Front Overhang / Rear Overhang (mm) | 1,500 / 2,235 |
| Number of Tires | 12 |
| Tire Size | 315/80 R22.5 |
| Front Track (mm) | 2,058 / 2,058 |
| Rear Track (mm) | 1,804 / 1,804 |
| Axle Load (Kg) | 7,500 / 7,500 / 13,400 / 13,400 |
| Maximum Speed (Km/h) | 100 |
| Chassis Model | Arocs 4158 |
| Brand Name | Mercedes-Benz |
| Manufacturer | Daimler AG |
| Drive Type | 8×4 |
| Number of Leaf Springs | 4 / 4 / 4 / 4 |
| Engine Specific Power | 11 kW/t |
| Fuel Type | Diesel |
| Overall Dimensions (mm) | 11,660 × 2,540 × 3,770 |
| Engine Model | OM473 LA |
| Engine Manufacturer | Daimler AG |
| Displacement (ml) | 15,569 |
| Power (kW) | 425 |
| Emission Standard | EURO VI |
1. Chassis Introduction
The truck uses the brand-new Mercedes-Benz Arocs 4158 chassis, inheriting the Mercedes-Benz family DNA with a rugged appearance and a comfortable cab.
It adopts the Servolwin electronic–hydraulic steering assist system, which integrates hydraulic and electronic power assistance into the dual front-axle steering mechanism, making steering easier.
The cab is 2.3m wide and features a newly designed dashboard, adjustable wide seats, and other elements that provide an excellent driving experience for both driver and passengers.
Safety equipment includes ABS (anti-lock braking), ASR (traction control), dual-circuit compressed-air braking with a reserve pressure of 12.5 bar and a sustained pressure of 10 bar, all-disc brakes with automatic pad clearance adjustment, cruise control with speed limiter, and a hill-start system. These active and passive safety systems greatly enhance driving safety.
The truck is powered by the new OM473 high-performance diesel engine, featuring:
- X-Pulse high-pressure common rail injection (injection pressure 2,700 bar)
- Asymmetric turbocharger (delivers near-peak torque at low revs for a stronger start and climbing)
- EGR + SCR aftertreatment (Euro V compliant)
- High-performance engine braking
Standard transmission: Mercedes Powershift 3 intelligent gearbox (automated manual) with 16 forward gears and 2 reverse gears. It automatically selects optimal gears, shifts quickly, offers a climbing mode, and provides driving programs for different applications. PTO options are abundant, with optimized connection angles. The rear PTO delivers 600–900 Nm torque and can drive an in-line hydraulic pump, whether stationary or moving.
2. Application & Main Features
This truck is specially designed for firefighting and emergency response. Key features:
- Powerful engine, high reliability, and an 18-ton water tank.
- Equipped with an imported fire pump, 166 L/s @ 1.0 MPa, offering high operational efficiency.
- Intelligent system with fully automatic pressure balancing, highly automated, and easy to operate.
- Integrated control panel displays chassis and pump status, sets operating limits, alarms on faults, and handles emergencies by auto pressure release, speed reduction, or shutdown.
- Rich pump interfaces allow parallel use with remote supply vehicles for continuous operation.
- Superstructure frame made entirely of aluminum alloy for lightweight strength.
- Spacious crew cab for up to 7 firefighters in combat gear.
- Complete accessories: hoses, couplings, ladders, tools, and equipment.
3. Fire Truck General Layout
The foam fire truck consists of:
Mercedes-Benz Arocs 4158 firefighting chassis, crew cab, water tank, pump room, pumping system, intelligent integration system, pipelines, water cannon, onboard equipment, and other auxiliaries.
Load is evenly distributed, the center of gravity and stability are well calculated, and internal space is arranged for ease of use.
3.1 Water & Foam Tank
- Capacity: Water 12,000 kg, Foam 6,000 kg
- Type: External container
- Material: Premium 304 stainless steel, anti-corrosion treated; welded to strict standards.
- Bottom: 5 mm, Sides: 4 mm, Top: 3 mm thick
- Structure: Anti-slosh baffles inside; quick-lock manhole (Ø450 mm) with automatic pressure relief; overflow pipe (DN80), stainless-steel float level gauge with dashboard display; bottom sump with drain; separate from body with reinforced beams and anti-vibration rubber mounts.
Accessories:
- One manhole with a quick lock
- Two electronic level sensors (displayed in the pump room)
- One DN80 overflow pipe
3.2 Pumping System
- Dedicated pump room with roller shutters on the left, right, and rear
- Components: Fire pump, piping, hoses, couplings, etc.
Fire Pump Specs:
- Model: 8FC
- Manufacturer: Hale (USA)
- Flow: 166 L/s @ 1.0 MPa
- Rear-mounted, driven by PTO from the engine
- Mechanical seal, suction depth ≥7 m
- Vacuum pump: Hale ESP (24 V DC)
- Priming time ≤100 s
Piping:
- Suction: 4 DN150 rear inlets with caps; 1 DN250 rear inlet with pneumatic butterfly valve + strainer.
- Outlets: Three DN80 outlets on each side, with manual gate valves.
- Monitor line: DN100 with pneumatic butterfly valve.
- Filling: 2 DN80 filling inlets on each side, plus an 80 mm line in the pump room with a pneumatic valve.
- Drain: Fitted with ball valves at convenient positions.
3.3 Intelligent Integrated System
Mounted at the pump room rear:
- Full automatic pressure balancing
- Displays chassis & pump status
- Limits for extreme conditions
- Fault alarms
- Emergency: Auto pressure release, speed reduction, shutdown
3.4 Electric Fire Monitor
- Brand: Elkhart PLKD150-7500EXM (USA)
- Flow: 150 L/s @ 1.0 MPa
- Range: ≥90 m
- Elevation: –45° to +90°, Horizontal: 350°
- Mounted on the roof, remote control (wired/wireless)
3.5 Equipment Compartments
- Aluminum-alloy frame, anodized panels bonded with anti-corrosion treatment
- Interior: smooth aluminum boards, bonded (no rivets)
- Anti-corrosion hardware, non-slip plates on top, and steps
- Equipment layout: ergonomic, logical, accessible from ground or step, with anti-rust, anti-vibration fixtures.
Roller Shutters: Lockable, waterproof, dustproof, same key for all, smooth operation, LED lighting linked to door movement, tested for water-tightness.
Folding Steps: Aluminum alloy, spring hinges, non-slip, load ≥150 kg, flashing warning light activates when step is open.
Roof Guardrail: Anti-slip aluminum panels, 300 mm rail, grab handles, foldable ladder at rear right.
3.6 Other Equipment
- Reversing camera with alarm
- Standard firefighting markings, roof light bar, strobe lights, scene lights, and decals for visibility.
| No. | Equipment Name | Main Model / Material / Structural Function | Qty |
|---|---|---|---|
| 1 | Mercedes-Benz 8×4 Chassis | Mercedes-Benz Arocs 4158, 8×4 drive, 425 kW, EURO VI emission standard | 1 unit |
| 2 | Upper Body Assembly | Steel framework with aluminum skin | 1 unit |
| 3 | Crew Cabin | Roof-mounted air conditioner, 7 sets of firefighter SCBA (self-contained breathing apparatus) with seats | 1 set |
| 4 | Front Water Tank | Made of 304 stainless steel | 1 unit |
| 5 | Middle Water Tank | Made of 304 stainless steel | 1 unit |
| 6 | Fire Pump | Hale (USA), Model 8FC | 1 set |
| 7 | Vacuum Pump | Hale (USA), ESP (DC24 V) | 1 set |
| 8 | Electric Fire Monitor | Elkhart (USA) PLKD150-7500EXM, wired/wireless remote control | 1 set |
| 9 | Piping System | Customized, includes left/right water inlets, rear suction port, etc. | 1 set |
| 10 | Integrated Control System | Customized | 1 set |
| 11 | Left/Right Equipment Compartments | Customized, aluminum alloy 4-tier shelves, checkered aluminum panels | 1 set |
| 12 | Roller Shutter Doors | Aluminum alloy construction, with locks | 5 sets |
| 13 | Pump Compartment | Aluminum framework with aluminum skin | 1 set |
| 14 | Pull-out Ladder | Aluminum structure, mounted at top left, with locking device | 1 set |
| 15 | Roof Access Ladder | Aluminum alloy, folding type with locking device, with roof handrail | 1 set |
| 16 | Vehicle Consumables | Includes assembly fasteners, hardware, locks, adhesives, labels, and other consumables | 1 set |
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