APSSKU: S/B4040HG

GX390 Honda 4 GPM 4000 PSI Skid Mount Belt Drive General Pump HD Steel

Name: GX390 Honda 4 GPM 4000 PSI Skid Mount Belt Drive General Pump HD Steel
Brand: American Pressure Systems
SKU: S/B4040HG
Price: 1929 USD
Availability: InStock

4000–4999 PSI4.0–4.9 GPMHonda

$1,92900

Freight delivery · free to a business with a forklift or dock · $99 to a residence

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Overview

This is a skid-mount cold-water pressure washer built on a Honda GX390 engine and a General Pump industrial pump, rated at 4000 PSI and 4.0 GPM. The belt-drive layout runs the pump at low RPM off the engine through a 3-V cog belt, which cuts heat and wear so both the engine and pump last longer under daily use. The heavy-duty domestic steel frame carries a corrosion-resistant coating and sits on four solid-rubber iso-pads to tame vibration. Low-oil shutdown protects the engine and a pump thermal valve guards against overheating. It's made and assembled in the USA and built for contractors running tough cleaning jobs day in and day out.

What's included

Honda GX390 industrial engine with Oil Alert low-oil shutdown
General Pump heavy-duty industrial pump
3-V cog belt drive for smooth, low-RPM power transfer
Heavy-duty domestic steel frame with corrosion-resistant finish
Adjustable external EZ-start unloader valve
Pump thermal valve prevents overheating
50-mesh stainless steel inlet filter screen
Four solid-rubber iso-pads and marine-grade battery box; made in the USA

Heavy Duty

Best for: driveways, concrete, paint stripping, commercial degreasing

Specifications

Pressure (PSI): 4000 to 4999
Flow (GPM): 4.0 to 4.9
Engine: Honda
Horsepower: 10 to 15
Drive: Belt
Pump: General Pump industrial
Frame: Heavy-duty steel, corrosion-resistant coating
Inlet Filter: 50-mesh stainless steel screen
Water Type: Cold water

Frequently asked questions

Belt drive means the Honda GX390 turns the pump through a 3-V cog belt instead of coupling directly to the engine shaft. This lets the General Pump run at lower RPM, which reduces heat and wear and extends the service life of both the pump and engine compared to a direct-drive setup.

No, this is a cold-water unit. It has no burner or heating coil, so it draws from your cold water supply and delivers 4000 PSI at 4.0 GPM at ambient temperature.

It uses the Honda GX390's low-oil shutdown (Oil Alert), which stops the engine before low oil causes damage. The pump is also protected by a thermal valve that releases water if the pump overheats during bypass.

Yes, it is proudly made and assembled in the USA. The frame is heavy-duty domestic industrial steel with a corrosion-resistant protective finish.

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