The 3200 PSI pressure washer with a Centurion CTB4S pump is a Honda GX390 gas unit pushing 5.2 GPM through a belt-drive triplex. It mounts to your truck or trailer and ships ready to run, with a 50' hose, gun, wand, and four nozzles.
Key Features
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Honda GX390 engine: A 389cc commercial Honda with automatic low-oil shutdown, the same engine pros run all day.
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Centurion CTB4S belt-drive triplex pump: Belt drive turns the pump at about 1,450 RPM, so it runs cooler and lasts longer than a direct-drive pump spinning near 3,400. It uses a nickel-plated brass manifold and ceramic plungers, and it's rated to 3,500 PSI and 5.5 GPM, so the unit's 3,200 PSI and 5.2 GPM leave headroom.
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Complete and ready to run: Comes with a 50' steel-braided hose, a 36" insulated wand and trigger gun with a safety lock, and four quick-connect nozzles (15°, 25°, 40°, soap).
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Truck-mount steel frame: A powder-coated steel plate with anti-vibration pads bolts straight to your truck or trailer.
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External unloader and thermal relief: The adjustable unloader bypasses flow when you release the trigger, and a thermal relief valve dumps heated bypass water to protect the pump.
Specifications
| Rated pressure |
3,200 PSI |
| Rated flow |
5.2 GPM |
| Engine |
Honda GX390, 389cc, air-cooled 4-stroke, about 11.7 net HP |
| Pump |
Centurion CTB4S triplex, belt-drive, nickel-plated brass manifold, ceramic plungers, about 1,450 RPM |
| Start |
Pull start (B3213HTBAS) or electric start (B3213HETBAS) |
| Water |
Cold water, inlet up to 140°F |
| Unloader |
External, adjustable, with thermal relief valve |
| Hose |
50 ft x 3/8" steel-braided, quick-connect |
| Gun and wand |
36" insulated wand, trigger gun with safety lock |
| Nozzles |
4 quick-connect: 15°, 25°, 40°, soap |
| Frame |
Powder-coated steel truck-mount with anti-vibration pads |
| Dimensions |
20" x 20" x 29" |
| Weight |
142 lb |
| Warranty |
3-year machine; 7-year Centurion pump |
What's Included
- Honda GX390 engine and Centurion CTB4S pump on a powder-coated steel frame
- External unloader and thermal relief valve
- 50' x 3/8" steel-braided high-pressure hose with quick-connect fittings
- 36" insulated wand and trigger gun with a safety lock
- Four quick-connect nozzles: 15°, 25°, 40°, and soap
- Engine oil and an oil funnel
This is a cold-water pressure washer, not a soft wash system. For chemical work, add a downstream injector rated for 3 to 5 GPM so the SH mixes after the pump. Don't run SH through the pump, because it corrodes the nickel-plated brass manifold, and flush the system after any SH job. The 3/8" quick-connect discharge fits standard surface cleaners, guns, and injectors.
How It Works
Water comes in from a garden hose, and the three ceramic plungers pressurize it and send it through the 50' hose to the gun, wand, and the nozzle you pick, up to 3,200 PSI. The external unloader bypasses flow when you let off the trigger, and the thermal relief valve protects the pump from heat during bypass. Switch to the soap nozzle to apply detergent at low pressure through the pump's built-in soap injector.
Pairs Well With
Frequently Asked Questions
What's the difference between the pull start and electric start versions?
Same pump, pressure, flow, and frame. The B3213HTBAS is pull start; the B3213HETBAS adds Honda's electric start, so you turn a key instead of pulling a cord. Pick electric if you start the machine a lot through the day.
Can I use this pressure washer for soft washing a roof?
No, not at full pressure. At 3,200 PSI it strips shingle granules and damages siding. Soft washing uses diluted SH at low pressure through a downstream injector, so the chemical runs after the pump, never through it.
What size surface cleaner works with 5.2 GPM?
A 20" to 24" deck. A 5 GPM machine spins that size well. Go bigger and the bar slows down and leaves shadow lines.
