Simpson Honda GC190 MegaShot 3100-PSI 2.5-GPM Gas Pressure Washer-MSH3125-S - The Home Depot
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Model # MSH3125-S

Internet # 203177499

Honda GC190 MegaShot 3100-PSI 2.5-GPM Gas Pressure Washer

Simpson Honda GC190 MegaShot 3100-PSI 2.5-GPM Gas Pressure Washer

This item has been discontinued.
The Home Depot no longer carries this specific product.

$399.00 / each


Model # MSH3125-S

Internet # 203177499

Especially created for the home and shop, the Simpson MegaShot series is perfect for the "Do-it-Yourselfer" looking for maximum performance with minimal investment. Simple to use and great for cleaning decks, patios, house siding, outdoor furniture, and prepping home exteriors for painting. Its compact design is lightweight and small enough to be easily transported by one person. Equipped with premium Honda OHC Engines that are built with high-quality components, designed for optimum performance in the harshest environments, and renowned for being easy to start, consistently. OEM Technologies axial cam pumps with patent pending PowerBoost technology provide higher pressure at the nozzle resulting in greater impact and cleaning performance.

California residents: see  Proposition 65 information

  • Honda GC190 OHC premium residential - Engine oil is included
  • Maintenance-free OEM Technologies axial cam brass head pump with PowerBoost technology which provides higher pressure at the nozzle
  • Welded frame construction and 10 in. premium pneumatic tires
  • 1/4 in. x 25 ft. MorFlex high pressure hose is kink and abrasion resistant, provides flexibility, and is equipped with easy twist-on connectors
  • Pro-style steel spray wand with 5 quick connect nozzle tips- 0 degrees, 15 degrees, 25 degrees, 40 degrees, and soap applicator nozzle
  • Downstream detergent injection system for use of cleaners
  • Ergonomic spray gun with safety lock-out
  • Convenient on-board a ccessory storage for spray gun/wand, high pressure hose, and nozzles
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Assembled Depth (in.) 
34.75 in 
Assembled Height (in.) 
23.25 in 
Assembled Width (in.) 
21 in 
Hose Diameter (In.) 
.25 in 
Hose length (in.) 
CA (CARB) Compliant 
CARB Compliant 
Detergent tank 
Engine Displacement (cc) 
Engine Make 
Engine Type 
GC190 OHC 
Foldable handle 
Fuel tank capacity (gallons) 
Hose Material 
Maximum Pressure (PSI) 
Number of tips included 
Onboard storage 
PSI Range 
2600-3199 PSI 
Pressure Washer Power Type 
Product Weight (lb.) 
60 lb 
Pump Brand 
Pump Type 
Start Type 
Translucent fuel tank 
Water capability 
Warranty / Certifications
Manufacturer Warranty 
Limited Warranty – Consumer Use - 2 Years on HONDA GC engine, 1 Year on frame and pump components, 90 Days on spray accessory items 


Rated 4.3 out of 5 by 263 reviewers.
Rated 3.0 out of 5.0 by PRETTY GOOD bought brand new from tractor supply, easy assembly just follow instructions, have used for over 5 hrs now seems to work well except, my unit seems to take a while for pump to 'kick' to high pressure, when i first used it after 'releaving' pressure before startup an cranking motor, it took probably a minute to have pressure, now it takes about 3-5 mins for pump to 'kick in' to high pressure spray, its almost like the pump goes into neutral then eventually starts working..when high pressure works its great, cleans very well, hose is much to short should be a minimum of 35 ft... March 29, 2015
Rated 5.0 out of 5.0 by Easy to use I have used this product on all my exterior wood work and it has performed flawlessly. April 15, 2015
Rated 5.0 out of 5.0 by Kicks Butt This little machine is amazing! Cleaned a four unit apartment building and surrounding walkways in two days, and this machine ran like a top cutting through everything. Old paint, mold, moss, dirt were no match. Do be carfull as you can cut brick and if the concrete is in bad shape this thing will tear it up. Suprising amount of power. Be prepared to use two hands as one handed operation will not give you the control you need given the kickback and presure from the handle. As such, a longer wand would have saved my back! Get this and you won't be disappointed! March 10, 2015
Rated 5.0 out of 5.0 by Fantastic!!! I have used more than one 2700 psi washer over several years, but this Simpson 3100 psi was significantly stronger. It worked twice as fast as my older (I wore it out) washer. So much pressure, I had to hold on to the wand with both hands!!! It really did speed up my jobs. Well worth the price. It will help me make more money quicker with more client satisfaction because it does such a good cleaning job so quickly. I bought it because of the Honda GC 190 and it has not disappointed me. October 21, 2014
Rated 5.0 out of 5.0 by Great spray choices. Easy to select right one My only complaint is u can't use Clorox. Great machine. Rolls around great. Spray nozzles have easy storage and r marked to show which one to use. Love it. March 21, 2015
Rated 5.0 out of 5.0 by Good power. Quick delivery and it has power to Spare! Nice machine. March 23, 2015
Rated 3.0 out of 5.0 by Jury is still out. I used it for 30 minutes, and it blew a gasket, which allowed water to enter the crankcase. This, of course, rendered the machine useless. Home Depot was excellent in allowing me to easily return it to a local store for a full refund. I will buy another one, as I consider this experience a probable fluke. February 3, 2015
Rated 4.0 out of 5.0 by Solid machine Excellent product. No issue with gas tank size or exhaust location. Would like to see a feature allowing various Pressure settings, otherwise I'd give it 5 stars. Hose storage on handle is very awkward, but that's been my experience with all pressure washers. Someday someone will invent a better mousetrap for that. July 29, 2014
  • 2015-05-02T10:54:24.800-05:00
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