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
The Simpson MS60921-S is a heavy duty, commercial pressure washer, that provides its users with an all-around versatile cleaning experience, and enables:
- pinpoint spot cleaning of hard, unpainted surfaces, accessing high areas, and successfully removing stubborn stains
- general cleaning of hard surfaces , washing vehicles, and preparing surfaces for painting
- soft cleaning of delicate surfaces, and gentle cleaning for larger areas with low pressure
- using cleaning solutions, and rinsing surfaces to remove residue
Ahead are presented its power characteristics and design, its main features and any other additional features.
Power
Using a 187cc (6 hp) engine, its axial cam pump delivers a pressure of up to 3300 PSI (roughly 55 times more than a standard garden hose) and a flow of up to 2.4 GPM (CETA-certified values). When these values are taken together, they yield a cleaning power of 7920 Cleaning Units.
The Honda GC190 engine of this gas-powered pressure washer is initiated by a classic pull-start mechanism.
The pressure washer's tank has a maximum capacity of 0.48 gallon for storing gasoline.
Design & Handling
Featuring a wheelbarrow design, the Simpson MS60921-S prioritizes maneuverability and stability, ensuring smooth handling and reliable functionality in demanding cleaning applications. 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.
Tipping the scales at 71 lbs, this unit's weight presents a notable challenge for users, especially when it comes to lifting and moving it, particularly over uneven ground. The major reasons for its heavy weight are its 187cc Honda GC190 engine and welded steel frame. 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: While the device doesn't feature a soap tank, detergent supply is ensured by a siphon hose. Featuring an automatic soap dilution mechanism, the Simpson MS60921-S ensures detergent is mixed to the specified ratio of 7:1 for optimal cleaning results. Upon attaching a soap nozzle, the pressure washer seamlessly integrates the detergent into the water flow.
- Pressure hose: The included 25 ft ⌀1/4" high-pressure hose can be neatly stored on the unit when not in use, utilizing a set of convenient hooks for convenient organization.
- Spray gun and wand: The included classic ergonomic spray gun and its steel wand can be easily stored in a side hook.
- Nozzles: The table below shows you the 5 included nozzles and the surfaces they're the most appropriate for.
0° | 15° | 25° | 40° | Soap | |
|---|---|---|---|---|---|
| Concrete, brick, masonry | |||||
| Siding, gutters, house | |||||
| Fencing, deck, patio | |||||
| Lawn equipment, boat, RV |
Please note: The shapes of the nozzles depicted above are for illustration purposes and may vary. Symbols used include a for 'Not recommended,' a for 'Suitable,' and an for 'Use with caution.'
Other Features
- Onboard storage: The Simpson MS60921-S's handy storage area lets you store nozzles and accessories, and thus, you’ll be always prepared and have everything necessary for the job at hand.
- Safety: Safety of operation is enhanced by a trigger lock mechanism (which prevents accidental operation) and a thermal relief valve (which helps to prevent internal pump damage).
- 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 soap hose, oil, pressure hose, wand and spray gun.
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.
- With its 3300 PSI max pressure output, the Simpson MS60921-S is in the expected pressure range, for gas-powered units in the $400-500 price range. Prioritizing the highest water stream power? Check out the Simpson PS60843—a top contender in this price range, delivering up to 4400 PSI.
- The achievable water flow of this washer, which reaches 2.4 GPM (gallons per minute) can be described as low, compared to other devices in its price range. If your priority is efficient debris removal, consider one of the products with the highest GPM in this price range, such as the Simpson PS60843, boasting 4 GPM.
- With a total of 7920 Cleaning Units (PSI X GPM), the MS60921-S places itself within the average cleaning efficiency range for comparably priced gas-powered units. For those placing importance on maximum cleaning power, the Simpson PS60843 and its 17600 Cleaning Units offer one of the highest cleaning efficiencies among units in the same 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
- Decent PSI for the price
- Decent CU for the price
- No soap tank
- Low GPM for the price
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 ?