Simpson MS60921-S - 3300 PSI 2.4 GPM Gas Pressure Washer With Honda Engine
The Simpson MegaShot MS60921-S is a gas-powered pressure washer offering a maximum water pressure of 3300 PSI and flow of 2.4 GPM. (Read full specs)
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Description
With a SIMPSON MegaShot 3300 PSI @ 2.4 GPM pressure washer, you receive an optimum performance for minimum effort. Quickly and easily clean siding, driveways, cars, prep for painting and more.This is a perfect option for homeowners, because it’s lightweight, easy to maneuver and can be transported by one person. The MS60921 is powered by a Honda engine and comes with a 25’ hose, ergonomic spray gun and 5 Quick-Connect nozzles.
Zoom on the Simpson MS60921-S
In a nutshell, the Simpson MS60921-S is a heavy duty pressure washer, which not only offers an all-around versatile cleaning experience, but that also allows:
- targeted spot cleaning for hard, unpainted surfaces, reaching elevated areas, and thoroughly removing stubborn stains
- general cleaning of hard surfaces , washing vehicles, and preparing surfaces for painting
- gentle cleaning for sensitive surfaces, and wide coverage cleaning with low pressure
- applying detergents and cleaning agents, and rinsing off surfaces
Ahead are presented its power characteristics and design, its main features and any other additional features.
Power
With a 187cc (6 hp) engine, its axial cam pump delivers a pressure of 3300 PSI (roughly 55 times more than a standard garden hose) and a flow of up to 2.4 GPM (CETA-certified values), resulting in the Simpson MS60921-S's cleaning power of 7920 Cleaning Units.
The Honda GC190 engine of this gas pressure washer is activated by pulling a starter cord, following a traditional approach.
Gasoline is stored in a fuel tank with a maximum capacity of 0.48 gallon.
Design & Handling
With its wheelbarrow design, the Simpson MS60921-S delivers superior maneuverability and stability, facilitating easy transport and steady performance across various surfaces. The sturdy welded steel frame ensures the longevity of the assembly, offering stability and protection for internal components, even during rigorous use. The handle adds to the MS60921-S convenience of transport.
At 71 lbs, this unit's substantial weight makes it quite a challenge for users to lift and maneuver, particularly on uneven surfaces where its heft can become even more apparent. Its 187cc Honda GC190 engine and welded steel frame add up to a large chunk of the device's weight. Despite this, the presence of two 10" pneumatic wheels reduces the complexity of moving the MS60921-S, even on rugged surfaces.
Main Features
The Simpson MS60921-S's package includes a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, with a more detailed description below.
- Soap injection: Though lacking a dedicated soap tank, the device ensures detergent supply via a siphon hose. The Simpson MS60921-S includes an automatic soap dilution mechanism, which will dilute the detergent using a 7:1 ratio. When a soap nozzle is connected, the pressure washer takes the initiative to mix the detergent with the water flow automatically.
- Pressure hose: The unit comes equipped with an included 25 ft ⌀1/4" high-pressure hose, which can be neatly stored on the unit when idle, thanks to a set of convenient hooks, ensuring easy access and organization.
- Spray gun and wand: A side hook allows for an easy storage of the included classic ergonomic spray gun and its steel wand.
- Nozzles: Refer to the table below for details on the 5 included nozzles and their recommended surface applications.
0° | 15° | 25° | 40° | Soap | |
|---|---|---|---|---|---|
| Concrete, brick, masonry | |||||
| Siding, gutters, house | |||||
| Fencing, deck, patio | |||||
| Lawn equipment, boat, RV |
Important: The nozzle shapes shown above are for illustrative purposes and may vary. Symbols denote suitability, with a indicating 'Not recommended,' a for 'Suitable,' and an for 'Use with caution.'
Other Features
- Onboard storage: With the Simpson MS60921-S's handy storage area, you’ll always have all the necessary nozzles and accessories at hand and thus, you’ll be fully prepared for any job.
- Safety: Safety of operation is enhanced by a thermal relief valve (which helps to prevent internal pump damage) and a trigger lock mechanism (which prevents accidental operation).
- Accessories: Besides the usual owner's manual (opens in a new tab) and documentation to get you promptly started, the Simpson MS60921-S comes with oil, spray gun, pressure hose, soap hose and wand.
Product Videos
The Simpson MS60921-S's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the Simpson MS60921-S compare to similarly priced pressure washers.
- The Simpson MS60921-S, which can reach up to 3300 PSI, has one of the higher pressure outputs of the gas-powered units that cost between $400 and $500. For those prioritizing maximum water stream power, consider the Kärcher G3400P, boasting 3400 PSI, as a standout performer in this price range.
- With a water flow of 2.4 GPM, this washer stands as average in terms of water volume for the price range mentioned above. If rinsing away debris most efficiently is your priority, one of the devices with the highest GPM in this price range is the Excell EPW2123100, which can reach up to 2.8 GPM.
- With a rather impressive value of 7920 Cleaning Units (PSI X GPM), the MS60921-S has a higher cleaning efficiency compared to similarly priced devices. If you are after the highest overall cleaning power, the Excell EPW2123100 with its 8680 Cleaning Units is one of the products that can achieve the highest cleaning efficiency in this price range.
Price comparison
As you can see from these interactive charts, when compared to other gas-powered washers between 7500 and 8000 Cleaning Units, the Simpson MS60921-S is on the average side of the price range.
Therefore, this pressure washer nicely fits in the expected budget for this kind of cleaning power.
The bottom line
- In the expected price range
- 5 year (limited) warranty
- Honda engine
- Designed to be stable
- Good range of nozzles included
- Automatic detergent dilution
- Onboard storage
- Several security features
- High PSI for the price
- High CU for the price
- Decent GPM for the price
- No soap tank
Features and Specifications
| Fuel | Gas-Powered |
|---|---|
| Engine | 187cc 6 HP Honda GC190 4-stroke OHC |
| Pump | Axial Cam |
| Water | Cold |
| PSI | 3300 |
| GPM | 2.4 |
| Cleaning Units | 7920 |
| Frame | Welded steel |
|---|---|
| Handling | Wheelbarrow |
| Wheels | 2 wheels, ⌀10", pneumatic |
| Weight | 71 lbs |
| Dimensions | Approx. 23.5 x 21.3 x 22.8 in (D x W x H) |
| Hose storage | Hooks |
| Soap injection | Via siphon hose |
|---|---|
| Soap dilution | 7:1 |
| Nozzles | 0°, 15°, 25°, 40°, Soap |
| Quick connect nozzles | Yes |
| Onboard storage | Yes |
| Hose | 25 ft, ⌀1/4 |
| Security | Trigger lock and thermal relief valve |
|---|---|
| Emissions | EPA |
| Included accessories | Oil, steel wand, spray gun, high pressure hose, soap hose, 5 nozzles |
| Warranty | 5 years |
| Series | MegaShot |
| Other model numbers | 60922 |
| UPC | 879399002908 |
We've taken extra care to research and verify each of the specifications above. That said, occasional mistakes or omissions are still possible. If you spot any missing or inaccurate information, feel free to suggest a correction so we can address it.
About Simpson
Simpson has over 50 years of experience making quality products for the outdoor power equipment industry. Part of the FNA Group based in Pleasant Prairie, Wisconsin since 2006, they are a vertically-integrated company, meaning most of the parts and accessories are manufactured and assembled by them. Their manufacturing facilities are international, but their gas-powered pressure washers are made in the USA. With the company motto "Driven by Performance", Simpson continues to offer a great variety of pressure-washing systems for the homeowner or the professional contractor.
Warranty Information
The Simpson MS60921-S is covered under a warranty for up to 5 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Simpson pressure washers, please contact the Simpson Customer Support: 1-877-362-4271.




User Reviews
Great machine ?