BE 5.5 GPM 3500 PSI Truck Mount Pressure Washer – Honda GX390

Commercial Cleaning Power. Compact Truck-Mount Design.

Not every pressure washing rig needs a massive V-Twin engine.

Sometimes the right combination of flow, pressure, and reliability is exactly what gets the job done.

The BE 5.5 GPM 3500 PSI Truck Mount Pressure Washer delivers professional cleaning performance in a compact, truck- and trailer-friendly configuration. Powered by the proven Honda GX390 commercial gasoline engine, this system combines 5.5 GPM of water flow with 3,500 PSI of cleaning pressure for demanding residential and commercial exterior cleaning.

It's a practical choice for contractors who need a dependable pressure washer for house washing, concrete cleaning, fleet maintenance, and everyday commercial work.

Commercial performance. Honda reliability. Ready for the rig.

5.5 GPM at 3,500 PSI. The Right Balance of Flow and Pressure.

Flow matters.

While pressure helps break dirt and grime loose, water volume helps carry it away. With 5.5 gallons per minute at 3,500 PSI, this pressure washer offers a productive combination for professional cleaning applications.

Built for Real Cleaning Work

• Residential and commercial pressure washing

• Concrete, driveways, and sidewalks

• Surface cleaning with properly matched accessories

• Building and exterior rinsing

• Fleet and equipment washing

• Downstream chemical application with compatible equipment

• Agricultural and property maintenance

The 5.5 GPM output provides strong rinsing capability without requiring the larger footprint of an 8 GPM commercial system.

Enough flow to get serious work done. Without going oversized.

Honda GX390 Engine. Proven Commercial Power.

At the heart of the system is the Honda GX390, one of the industry's established commercial single-cylinder gasoline engine platforms.

Known for dependable operation and serviceability, the GX390 is widely used in professional pressure washing, construction, and industrial equipment.

Honda GX390 Advantages

• Commercial-grade gasoline engine

• Proven single-cylinder design

• Strong power delivery for professional applications

• Established parts and service availability

• Suitable for demanding contractor use

The GX390 provides a practical engine platform for contractors who want professional cleaning capability without stepping up to a larger V-Twin-powered machine.

Proven Honda power. No unnecessary complications.

Commercial Triplex Pump. Built for the Workload.

A professional pressure washer needs a pump designed for repeated use.

This system uses a commercial triplex pump, providing the pressure and flow required for demanding cleaning applications.

The triplex pump design is well established in commercial pressure washing equipment, with serviceable components and performance suited to professional cleaning work.

Pump System Highlights

• Commercial triplex pump design

• 5.5 GPM rated flow

• 3,500 PSI rated pressure

• Designed for professional pressure washing applications

• Suitable for integration into truck and trailer cleaning rigs

Proper water supply, pump maintenance, and operation within the manufacturer's specifications are essential for reliable performance.

Truck & Trailer Mount Ready. Build It Your Way.

Whether you're building a compact truck skid or outfitting a commercial cleaning trailer, equipment space matters.

The BE 5.5 GPM pressure washer is designed for stationary installation on professional mobile cleaning equipment.

Ideal Mounting Applications

• Truck-bed pressure washing skids

• Open utility trailers

• Enclosed cleaning trailers with appropriate ventilation and exhaust arrangements

• Flatbed cleaning systems

• Custom commercial pressure washing rigs

Its GX390 engine platform makes it a practical alternative to larger GX690-powered systems where a 5.5 GPM configuration better matches the intended workload.

More cleaning capability. Less equipment taking over your build.

A Practical Choice for Professional Contractors.

Not every cleaning business needs the biggest pressure washer available.

For residential contractors, small commercial crews, and operators building compact mobile systems, a 5.5 GPM pressure washer can offer a useful balance of cleaning productivity and equipment size.

The BE GX390 configuration is well suited for crews looking to handle regular exterior cleaning work with a dedicated commercial machine.

Ideal For

• House washing contractors

• Pressure washing businesses

• Concrete and flatwork cleaning

• Property maintenance companies

• Fleet and equipment washing

• Commercial exterior cleaning

• Truck and trailer skid builds

The right machine isn't always the biggest. It's the one that earns its space on the rig.

Under the Hood — Technical Specifications

Built for the Job.

The BE 5.5 GPM 3500 PSI Truck Mount Pressure Washer combines the reliability of a Honda GX390 engine with commercial triplex pump performance in a practical mobile cleaning configuration.

With 5.5 GPM of flow, 3,500 PSI of cleaning pressure, and a truck- and trailer-friendly design, it's a dependable choice for professional contractors building a capable pressure washing rig.

5.5 GPM. 3,500 PSI. Honda GX390 power.

Bring the job.

Frequently Asked Questions

How much pressure and water flow does this pressure washer deliver?

The BE GX390 truck-mount pressure washer delivers 5.5 GPM at 3,500 PSI, providing a strong combination of rinsing volume and cleaning pressure for professional applications.

What engine powers this pressure washer?

It's powered by a Honda GX390 commercial gasoline engine, known for its reliability, serviceability, and proven performance in professional equipment.

Does this pressure washer have electric start?

Yes. The Honda GX390 features electric start for convenient operation on truck- and trailer-mounted cleaning systems.

Is the pump belt-driven?

Yes. This pressure washer uses a commercial belt-driven triplex pump. The belt-drive configuration allows the pump to operate at a lower RPM than the engine, helping reduce pump heat and wear during extended operation.

Can this pressure washer be mounted on a truck or trailer?

Yes. It's designed for integration into truck-mounted skids, flatbeds, and pressure washing trailers.

Is 5.5 GPM enough for professional pressure washing?

Absolutely. A 5.5 GPM pressure washer provides substantial water volume for house washing, commercial rinsing, concrete cleaning, and general exterior cleaning without requiring a larger 8 GPM system.

Can I use this pressure washer with a surface cleaner?

Yes. Its 5.5 GPM output makes it suitable for commercial surface cleaning with a properly sized surface cleaner and nozzle configuration.

What's the difference between this GX390 model and the larger GX690 model?

The GX390 model delivers 5.5 GPM at 3,500 PSI using a commercial single-cylinder engine. The larger GX690 configuration delivers 8 GPM at 4,200 PSI using a V-Twin engine, providing greater water volume for higher-production cleaning.

The pump drive configuration should be verified against the exact model before publication.