Westinghouse 3800 PSI 3.6 GPM 274cc Gas Powered Triplex Pump Cold Water Pressure Washer with 5-Quick Connect Nozzles

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Item # 990535107
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Highlights

  • Delivers 3800 PSI of pressure and 3.6 GPM of water flow
  • 5 quick connect nozzle tips: 0°, 15°, 25°, 40°, soap applicator
  • Commercial grade triplex brass head pump with oil lubrication
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4.1765 out of 5 stars
4.1765 out of 5 Stars. 17 reviews
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westinghouse 3800 psi 3.6 gpm 274cc gas powered triplex pump cold water pressure washer with 5-quick connect nozzles Three-quarter view of a Westinghouse WPX3800 showing the black fuel tank labeled "3800 PSI", blue engine housing with Westinghouse logo, OHV engine and commercial triplex brass head pump with oil fill. Mounted on a black tubular frame with high‑profile pneumatic tires, handle with hose wrap and coiled high‑pressure hose with brass quick‑connect fittings; five color‑coded nozzle tips (0°, 15°, 25°, 40° and soap) shown. Suitable for heavy‑duty outdoor cleaning and often used by contractors for mobile cleaning tasks.
Westinghouse 3800 PSI 3.6 GPM 274cc Gas Powered Triplex Pump Cold Water Pressure Washer with 5-Quick Connect Nozzles
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About this item

Product details

"The Westinghouse WPX3800 gas powered pressure washer, with 3800 PSI and 3.6 GPM, is designed to tackle your toughest cleaning jobs with ease. Built with a powerful 4-Stroke OHV Westinghouse engine and a commercial grade triplex brass head pump, it’s meant for powerful heavy duty cleaning. With 5 interchangeable nozzle tips, the WPX3800 has the versatility to handle a variety of situations and surfaces including brick, stone, concrete, wood, aluminum and iron. The 1.3 gallon fuel tank and the high profile pneumatic tires offer easy mobility and maneuverability, allowing you to get into those hard-to-reach places with the toughest grime. Make all your deep-cleaning projects easier than ever before with the Westinghouse WPX3800 pressure washer. "

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Specifications

  • Commercial Grade Performance: 3800 PSI and 3.6 GPM of powerful, deep cleaning water pressure perfect for decks, sidewalks, siding, fences, railings, garage floors, exterior walls, cars and patio furniture with an easy-to-fill 1.3 gallon gas tank
  • Includes What You Need: 35 foot abrasion resistant Super-Flex hose with lightweight high pressure spray gun and 5 quick connect nozzles (0°, 15°, 25°, 40° & Soap) that are compatible with pressure washer accessories such as surface cleaners, undercarriage cleaners, and foam cannons with M22 fittings
  • Powerful Westinghouse Engine: Heavy duty gas powered 274cc 4-Stroke Westinghouse OHV horizontal shaft engine with recoil start - long lasting, commercial grade triplex brass head pump provides 3.6 gallons of water a minute
  • Ready to Roll: Tough steel frame construction with 10″ high profile pneumatic tires that provide easy transportation and maneuverability; Comes with engine oil, tools, and quick start guide to get you started in minutes
  • A Name You Can Trust: All Westinghouse pressure washers are functionally tested in the factory and may contain minimum residual oil and/or fuel odor; Backed by 3 year limited manufacturer service, labor and parts coverage

Member ratings & reviews

4.6 out of 5 stars
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Showing 1-3 of 509 reviews

Sep 1, 2026
Reviewer name: TinOregon
5 out of 5 stars
5 out of 5 stars review

Great time saver!

I was unhappy with the performance of my old 2gpm pressure washer. This unit at 3.6GPM is at least two times faster at cleaner my driver than the old unit. I only have 5 engine hours so far but am very pleased with the performance. Tip: If the pull starter is very hard to pull and the unit will not start- presser the trigger on the sprayer to depressurize the triplex pump which will make it easier to start,

Review from westinghouse.com
Helpful?6V31ZZFR5CDL20163350605
Jul 23, 2026
Reviewer name: rjcarpenterjr
5 out of 5 stars
5 out of 5 stars review

Nice Upgrade for Me

I bought the WPX3800 as an upgrade from my previous pressure washer, specifically because I wanted higher water flow. Going from 2.4 to 3.6 gallons per minute doesn't sound dramatic on paper, but it's a 50 percent jump, and you feel it immediately in how fast surfaces rinse clean. I've put it through three different jobs so far: soft washing the house exterior, cleaning a wooden deck, and power washing concrete. It handled all three well, which is really the selling point, since most machines are good at one end of that range but not both. Setup out of the box was incredibly easy. I had everything put together in less than 15 minutes, and it started on the first or second pull every time. Minor gripe: The instructions for the soap hose and thermal relief valve were unclear. If you're stepping up from a lower-GPM unit, the difference is real. Recommended.

Review from westinghouse.com
Helpful?6V31ZZFR5CDL20163350605
Jun 4, 2026
Reviewer name: Grandoc
5 out of 5 stars
5 out of 5 stars review

A top consumer level pressure washer

I have a large concrete driveway, so this 3800 psi product was purchased to make surface cleaning a 1 day job rather than struggling with a weaker pressure washer taking 2-3 days to do the job. Well made, solid. Actually more compact than I expected, but delivers the water flow volume and pressure I need. This produce is positioned at the top of consumer level pressure washers at a reasonable price ... bigger, more powerful units are available as industrial level tools at a much higher cost.

Review from westinghouse.com
Helpful?6V31ZZFR5CDL20163350605