The 3000 PSI @ 5.5 GPM Belt Drive Pressure Washer is a mount-ready commercial machine built on a Honda GX390 and a belt-drive triplex pump. The belt drive runs cooler and lasts longer than direct drive under daily hours. Choose your pump and start type.
Key Features
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3000 PSI at 5.5 GPM: Enough flow and pressure for flatwork, fleet, and commercial exterior jobs all day.
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Honda GX390 engine: The 389cc, 11.7 HP commercial standard, with parts and service at any shop and Oil Alert low-oil shutdown.
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Belt-drive triplex pump: A Comet RW5535 or General Pump PSS5535, both rated to 5.5 GPM and 3500 PSI, run here at 3000. Belt drive runs cooler and lasts longer than direct drive.
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Forged brass manifold, ceramic plungers: Brass head, solid ceramic plungers, and stainless valves, the build that holds up to daily commercial hours.
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Mount-ready: Bolts to an aluminum plate with anti-vibration pads, ready to drop onto a truck bed or trailer with no fabrication.
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Pull or electric start: Recoil, or key start, your choice at checkout.
Belt Drive Pressure Washer Specifications
| Output pressure |
3000 PSI |
| Output flow |
5.5 GPM |
| Engine |
Honda GX390, 389cc, 11.7 HP net, with Oil Alert shutdown |
| Pump options |
Comet RW5535 or General Pump PSS5535, belt-drive triplex |
| Pump build |
Forged brass manifold, ceramic plungers, stainless valves |
| Drive |
Belt drive |
| Start options |
Pull (recoil) or electric (key) |
| Mounting |
Aluminum plate with anti-vibration pads |
| Water type |
Cold water |
| Chemical compatibility |
Plain water through the pump. Apply chemical downstream, then flush. No SH through the pump head. |
What's Included
- The assembled pressure washer (Honda GX390 and your chosen pump on an aluminum mounting plate with an external unloader)
- 50' steel-braided high-pressure hose
- 36" insulated spray wand
- 4 quick-connect nozzles: 15°, 25°, 40°, and Soap
- Engine oil with an oil funnel
It mounts to a truck bed, trailer, or skid. It pairs with surface cleaners and high-pressure accessories sized for 5.5 GPM. It's a cold-water machine, and it has no chemical injector in the box, so the Soap nozzle only draws detergent once you add a downstream injector to the line.
How It Works
The Honda GX390 turns the pump through a belt and pulley instead of a direct couple. That steps the engine's 3600 rpm down to the pump's working speed and lets the pump run cooler with less transmitted vibration, which is why belt drives outlast direct-drive units under daily commercial hours. The triplex pump pressurizes incoming water to 3000 PSI at 5.5 GPM.
The external unloader routes water back through a bypass loop the moment you release the trigger, so pressure doesn't spike and blow a seal. You set the spray pattern with the quick-connect nozzles: a tight 15° for stripping, 25° and 40° for general washing and rinsing, and the black Soap nozzle for low-pressure detergent once a downstream injector is in the line. Run plain water through the pump and apply chemical downstream, then flush.
Pairs Well With
Frequently Asked Questions
What's the difference between the Comet and General Pump options?
Both are 5.5 GPM, 3500-PSI-rated belt-drive triplex pumps with forged brass manifolds and ceramic plungers, and they perform about the same at this tier. Pick by local parts availability and what your supply house stocks. Comet carries a 5-year pump warranty; General Pump backs its forged brass manifold for life.
Why belt drive over direct drive?
A belt drive runs the pump cooler and with less vibration than a direct-drive unit, which adds up to longer pump life under heavy daily use. Direct-drive machines cost less up front but wear faster when you run them hard every day.
Can I run SH or bleach through this pressure washer?
Not through the pump. SH corrodes the brass manifold and degrades the seals. Apply chemical downstream of the pump with a downstream injector, run it at the diluted draw ratio, then flush the system with clean water. Keep neat chemical out of the pump head.
