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Simpson MSH3125-S - Spec Breakdown

The Simpson MegaShot MSH3125-S is a gas-powered pressure washer offering a maximum water pressure of 3200 PSI and flow of 2.5 GPM. (Read full specs)

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Simpson MSH3125-S 3200PSI Gas Pressure WasherSimpson MSH3125-S 3200PSI Gas Pressure WasherSimpson MSH3125-S 3200PSI Gas Pressure WasherSimpson MSH3125-S 3200PSI Gas Pressure Washer
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Price History
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Price history for the Simpson MSH3125-S
Latest updates:
  • $370.00 - September 2, 2022
  • $343.00 - August 29, 2022
  • $370.00 - August 23, 2022
  • $343.99 - July 27, 2022
Data source: ebay.com
Since: July 27, 2022
  • Highest Price: $370.00 - August 23, 2022
  • Lowest Price: $343.00 - August 29, 2022

Features and Specifications

General
FuelGas-Powered
HandlingWheelbarrow
WaterCold
PSI3200
GPM2.5
Cleaning Units8000
Engine187 cc 6 HP Honda GC190 4-stroke OHC
PumpAxial Cam
SeriesMegaShot
Other model numbers60551
Features
FrameWelded steel
Soap injectionVia siphon hose
Soap dilution7:1
Nozzles0°, 15°, 25°, 40°, Soap
Quick connect nozzlesYes
Onboard storageYes
Hose25 ft, ⌀1/4
Hose storageHooks
Misc
Dimensions
(D x W x H)
Approx. 34 x 21 x 24 in
Weight55 lbs
Wheels2 wheels, ⌀10", pneumatic
Included accessoriesOil, steel wand, spray gun, high pressure hose, soap hose, 5 nozzles
SecurityTrigger lock and thermal relief valve
EmissionsEPA
Warranty5 years
UPC879399000959

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

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Description

With the SIMPSON MegaShot 3200 PSI @ 2.5 GPM pressure washer, you receive an optimum performance for minimum effort. Clean siding, driveways, cars, prep for painting and more quickly and easily. This is a perfect option for homeowners, because it’s lightweight, easy to maneuver and can be transported by one person. The MSH3125 is powered by a Honda engine and comes with a 25’ hose, ergonomic spray gun and 5 Quick-Connect nozzles. (source: Simpson (opens in a new tab))

Zoom on the Simpson MSH3125-S

The Simpson MSH3125-S, a heavy duty, commercial pressure washer, gives its user an all-around versatile cleaning experience, topped off by the following features:

  • spot cleaning of hard, paint-free surfaces and out-of-reach areas
  • intense cleaning of tough, paintless surfaces
  • cleaning of painted and fragile surfaces
  • applying detergent and cleaning solutions

The following sections will present you in detail its power characteristics and design, its main features and all the additional features it has to offer.

Power

The Simpson MSH3125-S in use

The Simpson MSH3125-S

The Simpson MSH3125-S's axial cam pump, powered by a 187 cc (6 hp) engine, can provide a pressure of up to 3200 PSI (approximately 53 times more than a standard garden hose) and a flow of up to 2.5 GPM (CETA-certified values). The Simpson MSH3125-S thus has a cleaning power of 8000 Cleaning Units.

The Honda GC190 engine of this gas-powered pressure washer gets started by a classic pull-start mechanism.

The fuel is stored in a tank, which can hold up to 0.48 gallon of gasoline.

Design & Handling

The wheelbarrow design of the Simpson MSH3125-S grants mobility and stability to the unit. Its sturdy welded steel frame provides longevity to the assembly. The handle adds to the MSH3125-S convenience of transport.

Most users can maneuver this model easily, as it weighs just 55 lbs. One of the largest contributors to its weight are its 187 cc Honda GC190 engine and its welded steel frame. But, as the MSH3125-S does have a set of two 10" pneumatic wheels, it can be easily maneuvered and manipulated.

Main Features

The Simpson MSH3125-S in use

The Simpson MSH3125-S

The Simpson MSH3125-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: Detergent is fed in through a siphon hose, since the device lacks a soap tank. The Simpson MSH3125-S has an automatic soap dilution mechanism, which dilutes the detergent using a 7:1 ratio. The detergent will be added automatically to the water when a soap nozzle is attached.
  • Pressure hose: The included 25 ft ⌀1/4" high-pressure hose can be neatly stored on the unit when idle thanks to a set of convenient hooks.
  • Spray gun and wand: A side hook enables you to easily store the included classic ergonomic spray gun and its steel wand.
  • Nozzles: The 5 nozzles included with the device, and the respective surfaces which they’re the most suitable for, are shown in the following table.
 


15°

25°

40°

Soap
Concrete, brick, masonryUse with cautionSuitableSuitableSuitableSuitable
Siding, gutters, houseNot recommendedUse with cautionUse with cautionSuitableSuitable
Fencing, deck, patioNot recommendedUse with cautionUse with cautionSuitableSuitable
Lawn equipment, boat, RVNot recommendedUse with cautionUse with cautionUse with cautionSuitable

Note: The shape of the nozzles above is for illustration purposes only and may differ.
Red cross: Not recommended. Green check: Suitable. Orange check: Use with caution.

Other Features

Some of the accessories of the Simpson MSH3125-S

Some of the included accessories

  • Onboard storage: The Simpson MSH3125-S allows you to be always fully prepared, as it features a handy storage area, where nozzles and accessories can be stored.
  • 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: On top of an owner's manual (opens in a new tab) and the usual documentation to get you swiftly started, the Simpson MSH3125-S also comes with spray gun, wand, pressure hose, soap hose and oil.
  • Emissions: The Simpson MSH3125-S is NOT CARB-compliant. Therefore, it is not available in California for sale nor purchase.

Product Videos

The Simpson MSH3125-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 MSH3125-S compare to similarly priced pressure washers.

  • With 3200 PSI, the Simpson MSH3125-S ranks as one that can reach an above average pressure, amongst the gas-powered products that cost between $300 and $400. If you're going after the highest possible power of the water stream, one of the best in this price range is the Westinghouse WPX3400 that can reach up to 3400 PSI.
  • With a maximum GPM of 2.5 (gallons per minute), this washer belongs to the top in terms of water flow, in its respective price range. If rinsing away debris most efficiently is your priority, one of the devices with the highest GPM in this price range is the Predator 3200, which can reach up to 2.8 GPM.
  • Boasting with 8000 Cleaning Units (PSI X GPM), the MSH3125-S is one of the more efficient devices in its respective price range. If you are after the highest overall cleaning power, the Predator 3200 with its 8960 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 this interactive chart, when compared to other gas-powered washers between 8000 and 8500 Cleaning Units, the Simpson MSH3125-S is on the cheap side of the price range.

It can therefore be a really good buy if you're looking to acquire a budget pressure washer.

The bottom line

STRENGTHS:
  • Inexpensive
  • Honda engine
  • Designed to be stable
  • Good range of nozzles included
  • Automatic detergent dilution
  • Onboard storage
  • Several security features
  • 5 year (limited) warranty
  • High PSI for the price
  • High GPM for the price
  • High CU for the price
WEAKNESSES:
  • No soap tank
  • Not CARB-compliant

Do you own the Simpson MSH3125-S and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

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. 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 MSH3125-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.

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