SIMPSON Pro Series with Triplex Pump 4000 PSI 3.5-GPM Cold Water Gas Pressure Washer Combo Kit
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Items Included in this Collection




Item #5659891 |
Model #PS61371
CRX340 engine with a low oil shutdown feature
Reliable AAA® Triplex PRO Pump with PowerBoost Technology delivering higher pressure at the nozzle
Steel-braided Monster Hose 3/8 in x 50 ft kink and abrasion resistant hose with quick connect fittings and polyurethane outer jacket
Steel frame construction with a powder-coated finish for durability and corrosion resistance
13 in Premium pneumatic tires for ease of maneuverability across various terrain
5 Quick connect nozzle tips: 0°, 15°, 25°, 40° and soap to use for a variety of cleaning applications
Ergonomic 360-degree side assist rotating spray gun designed for operator comfort and control
Unit Dimensions: L: 38" x W: 23.5” x H: 29”, Unit Weight 120 lbs, **Does not ship to California**
Exclusive 5 year limited engine warranty, 5 year limited pump warranty, 10 year limited frame warranty
General | |||
|---|---|---|---|
Color/Finish Family | Black | Hose Material | Polyester |
Manufacturer Color/Finish | Black | Wheel Material | Heavy-duty polyurethane |
Series Name | Pro Series with AAA Triplex Pump | Wheel Type | Pneumatic |
Type | Pressure washer | Start Type | Manual |
Power Source | Gas | Usage | Heavy-duty |
Grade | Residential | Nozzle Type | Pro style tips with quick disconnect |
Package Contents | Pressure Washer, Spray Gun, Spray Lance, Nozzles, Hose, Owner's Manual, Quick Set Up Guide, Engine Oil | Pump Type | Triplex |
Dimensions | |||
|---|---|---|---|
Engine Oil Capacity (oz.) | 20.48 | Battery Amp Hours | 0 |
Fuel Capacity (Gallons) | 1.6 | Amperage | 0 |
Hose Diameter | 3/8-in | Cord Length (Feet) | 0 |
Hose Length (Feet) | 50 | Width (Inches) | 23.5 |
Weight (lbs.) | 120 | Height (Inches) | 29 |
Depth (Inches) | 38 | Wheel Diameter (Inches) | 13 |
Features | |||
|---|---|---|---|
Adjustable Wand | Yes | Integrated Storage | No |
Battery Recharge Time (Hours) | 0 | Interchangeable Wands | Yes |
Battery Run Time (Hours) | 0 | Lowe's Exclusive | Yes |
Brushless | Yes | Number of Batteries Included | 0 |
Chemical/Detergent Injection | No | Number of Spray Tips Included | 5 |
Corded/Cordless | Cordless | Pressure Rating (PSI) | 4000 |
Detergent Tank Options | None | Quick Connect Tips | Yes |
Engine Brand | CRX | Recommended Engine Oil | 10W-40 |
Engine Horsepower | 7.6 | Soap Applicator Included | No |
Engine Oil Included | Yes | Variable PSI | No |
Engine Torque (Foot/lbs.) | 15.4 | Water Tank | No |
Flow Rate (GPM) | 3.5 | Water Temperature | Cold |
Includes Surface Cleaner | No | Wheels Included | Yes |
Warranty | |||
|---|---|---|---|
Warranty | 3-year limited | ||
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | Safety Listing | Not safety listed | |
CARB Compliant | No | ||
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 47121800 | ||
Ratings may include incentivized customer reviews.
What Customers Are Saying
This pressure washer appears to be a powerful and durable machine that delivers excellent cleaning performance on a variety of surfaces. Customers praised its strong pressure, ease of use, and included accessories like nozzle tips and onboard storage. While a few reported minor issues, the overall sentiment is very positive, with many stating they would recommend this product for both home and professional use.
Customer review summary generated by AI, including incentivized reviews.Great pressure washer!
After a lot of researching and careful consideration I decided to give the Simpson pro series pressure washer a shot and boy I’m glad I chose this one! I had a craftsman prior to this one and it never really lived up to the reliability and durability that craftsman is supposed to be known for. It always had issues from day one and nothing I tried ever seemed to make a difference. Right out of the box, the Simpson was easy to assemble and get ready to work. Install the handlebar with 2 carriage b...
From simpsoncleaning.com
Honest to what little I know
Just to be direct because our money and time is limited. I purchased this pressure washer because I wanted a more robust commercial upgrade compared to the regular box store brands. I've only used it twice and has performed extremely well as expected. Pros: Made in USA and I liked the attention to detail of instructions from all the tag labels. Each tool on the market is different and precautions can be easily overlooked. Cons: These are not really cons but maybe future improvements. 1, extra h...
From simpsoncleaning.com
Highest Quality, Best Performance
Out of the multiple pressure washers I shopped (DeWalt, Craftsman, Husqvarna, Westinghouse), Simpson washers offered the best quality and performance of any "consumer grade" machine. I put consumer grade in quotes because it feels much more like a professional outfit in regards to its sturdiness and performance. No other machine came close in that regard. While marginally pricier than others I mentioned, my impression is Simpson is undoubtedly the better product. The fact it is backed by a warra...
From simpsoncleaning.com
Dependable Unit
I recently purchased the Simpson Pro Series 3500 PSI / 2.5 GPM pressure washer with the AAA triplex pump, and I’ve been extremely impressed so far. Right out of the box, the build quality stands out—solid steel frame, well-mounted components, and everything feels much more durable than typical homeowner-grade units. Setup was straightforward, though you do need to add engine oil before first use. Once running, the engine starts easily and runs smooth with a steady, confident sound—not overly ...
From simpsoncleaning.com
Powerful and Reliable – A Major Upgrade
1. Did the product help solve a problem, fill a need, or fulfill a want? Yes, this gas pressure washer definitely solved a problem for me. I needed something strong enough to clean years of buildup on my driveway, siding, and patio furniture. My old electric unit just didn’t have the power. This gas model filled that need by delivering significantly more pressure and tackling tough grime with ease. 2. How did your personal experience go with the product? (Expectation vs. reality?) I expected so...
From Pro Series with AAA Triplex Pump 3500-PSI 2.5-GPM Cold Water Gas Pressure washer with 5 Spray Tips Verified PurchaserIncentivized
great power for a homeowner
be careful with the hose connections. the brass is soft and as soon as it doesn’t want to turn, it’s time to debugger the threads or go get new fittings all together. mine must have had a ding in the threads on the male connector for the wand hookup, but i was able to cut off a few millimeters with a saw and clean up the female thread on the wand hose. works fine.
From simpsoncleaning.com
Solid Power Washer
Assembly was too easy. Where was the challenge? I would go through the directions thoroughly. You do not want any fine particles clogging your nozzle or pump. I had to use a wood block and hammer to seat the handle far enough to get the bolt through. No complaints, it probably will not loosen over time. I would rather have that than loose. Reasonably priced. Started on the second pull out of the box of course after I put the oil in and removed the breath hole on the pump. Hopefully it will ...
From simpsoncleaning.com
Too soon to tell
I like the triplex engine concept and the ability to service the uploader valve without junking the whole machine. I am a bit surprised, however, to be asked for a review before even turning the machine on during the registration process. Setup was easy and logical with clear directions. I assume it will work when I turn it on. The only negative I see so far is that the ignition wires are dangling by a single mount and are clearly exposed to being torn off some day as you haul it around outdoor...
From simpsoncleaning.com
Thanks for the design feedback, Pheidius. We will be documenting the content of your review to pass along to our team. As for the registration process...
Great pressure sprayer
Works well, easy setup right out of the box. Could use a better design for storing the spray gun when mobile and handle is too low to the ground for me.
From Pro Series with AAA Triplex Pump 3500-PSI 2.5-GPM Cold Water Gas Pressure washer with 5 Spray Tips Verified Purchaser
Hello, Pats1sb36. We appreciate your design feedback & will be documenting it for our team. We hope the compact design proves a net positive in w...

Professional quality and performance!
I had other brands for years, I have alot of properties and cars, tractors, etc. So i needed a higher strength PSI cleaning power. This unit does it and very well! The price is very reasonable for todays products. You can tell by the weight its well built, nice rubber tires to move around, reaches high places. I couldn’t ask for more!
From simpsoncleaning.com






Thanks for such thorough feedback, Gopack771. We are happy to hear your 3500 PSI pressure washer delivered such an impressive efficiency upgrade &...