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Wilks USA TX850Petrol Pressure Washer

Is it overkill? Definitely.

Bring in the big guns with the highest-powered unit ever released by the undisputed experts at Wilks USA. Featuring a 450cc engine driving a ferocious 4,800 psi jet, the Wilks USA TX850 provides more than enough raw power to effortlessly shred through any job you can imagine with masterful ease.


TX850Petrol Pressure Washer

Fight dirty

The Wilks USA TX850 wasn’t designed to play fair. Featuring a motorcycle-class engine driving water pressure equivalent to a 3 kilometre ocean dive, it’s safe to say that any mud, grime, sludge and stains never stood a chance.

Engineering heritage

Inspired by the unbeatable performance and unyielding dependability of the great American automobile tradition, we engineered the fully adjustable, near-indestructible forged brass jet pump at the heart of the TX850 to be ready for absolutely anything.

Don't get tied down

No mains tap nearby? No problem.

With the included filtered intake hose, the TX850 runs just as well from a bucket, barrel, or even a garden pond.

No interruptions

With a low-consumption 15 hp engine fed by a huge 5 litre tank, the TX850 is ready for hours of uninterrupted dirt demolition.

Not that you’ll need it, of course — 4,800 psi of water pressure will make most tasks history in mere moments.

Not a massive stretch

Forget about “out-of-reach” with a 20 metre steel-braided hose — more than enough for blasting the grime out of those awkward nooks and crannies.

Recognise no boundaries

Four heavy-duty oversized pneumatic tyres ensure the TX850 is ready to accompany you on any job, no matter the terrain.


Wilks USA  TX850 features
Hover or tap on the red circles to learn more.



pressure_washer_typePetrol powered (E10 ready)
pressure_washer_max_pressurePeak jet pressure: 4800 psi (331 bar)
pressure_washer_continuous_pressureSustained jet pressure: 3600 psi (248 bar)
pressure_washer_hose_lengthHose length: 20m (66ft)
pressure_washer_motorengine_typeMotor/engine type: 15HP OHV 4-Stroke
pressure_washer_flow_rateFlow rate: 14 litres/min
pressure_washer_max_water_temperatureMax water temperature: 50 °C (122 °F)
pressure_washer_starting_systemStartup mechanism: Recoil Pull Start
pressure_washer_fuel_tank_capacityFuel tank capacity: 6.5 litres
pressure_washer_pump_typePump type: Full Brass Head Pump
pressure_washer_oil_tank_capacityOil tank capacity: 1.1 litres
pressure_washer_oil_typeOil type: 10W40 Semi Synthetic

In the box

  • TX850 Pressure Washer
  • 20 Metre Hose
  • High Pressure Gun
  • Straight Lance
  • Inlet Hose with Filter
  • Turbo Nozzle
  • 5 Quick Fit Nozzles
  • Bolt and Fitting Set
  • User Manual


Shipping and delivery

UK and Ireland: fast and free

Machinery and equipment shipped within the UK* are sent via one of our trusted 24-hour couriers, and you won't pay a penny.

Consumables, accessories and vinyl wrap are sent via standard couriers and arrive within 1-3 days.

*Due to courier limitations, this excludes the Scottish Highlands.

User manual

View the manual


Your new Wilks USA Pressure Washer comes with a 12-month automatic warranty, as well as UK-based technicians & an expert technical customer service team on hand to assist with any queries that you may have, before and after purchase.

View warranty details


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