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Simpson MSH3125-S - 3200 PSI 2.5 GPM Gas Pressure Washer With Honda Engine

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:
  • $400.94 - April 14, 2024
  • $309.99 - April 11, 2024
  • $400.94 - March 31, 2024
  • $364.49 - March 27, 2024
Data source: ebay.com
Since: March 27, 2024
  • Highest Price: $400.94 - March 31, 2024
  • Lowest Price: $309.99 - April 11, 2024

Features and Specifications

FuelGas-Powered
HandlingWheelbarrow
WaterCold
PSI3200
GPM2.5
Cleaning Units8000
Engine187cc 6 HP Honda GC190 4-stroke OHC
PumpAxial Cam
SeriesMegaShot
Other model numbers60551
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
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.

Zoom on the Simpson MSH3125-S

The Simpson MSH3125-S is a heavy duty, commercial pressure washer, that provides its users with an all-around versatile cleaning experience, and enables:

  • spot cleaning of hard, paintless surfaces and reaching far-away areas
  • intense cleaning of tough, paintless surfaces
  • cleaning of painted or delicate surfaces
  • use of 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

Its axial cam pump, which utilizes a 187cc (6 hp) engine, may deliver a pressure of up to 3200 PSI (almost 53 times more than a standard garden hose) and a flow of up to 2.5 GPM. These values correspond to a cleaning power of 8000 Cleaning Units.

A classic pull-start mechanism is responsible for starting the gas-powered pressure washer’s Honda GC190 engine.

Gasoline storage is facilitated by a fuel tank with a maximum capacity of 0.48 gallon.

Design & Handling

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

The device can be maneuvered with ease by most, since it only weighs 55 lbs. Its 187cc Honda GC190 engine and welded steel frame account for a good chunk of that weight. The MSH3125-S can still be easily manipulated and maneuvered, thanks to its two 10" pneumatic wheels.

Main Features

The Simpson MSH3125-S in use

The Simpson MSH3125-S

The Simpson MSH3125-S comes with a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, which are detailed below.

  • Soap injection: While the device doesn't feature a soap tank, detergent supply is ensured by a siphon hose. The detergent is diluted with a 7:1 ratio by the Simpson MSH3125-S's automatic soap dilution mechanism. Whenever a soap nozzle is connected, the detergent is automatically added to the water.
  • 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: Both the classic ergonomic spray gun and its steel wand may be conveniently stored in a side hook.
  • Nozzles: The 5 included nozzles, and the respective surfaces they’re appropriate for, are listed in the table below.


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 features a handy storage area, which allows you to neatly store nozzles and accessories and be always prepared by having everything needed at hand.
  • 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: 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 pressure hose, spray gun, soap hose, oil and wand.
  • Emissions: The Simpson MSH3125-S is NOT CARB-compliant and so you cannot buy it nor sell it in California.

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 its 3200 PSI max pressure output, the Simpson MSH3125-S is in the expected pressure range, for gas-powered units in the $400-500 price range. If the highest possible power of the water stream is your priority, one of the champions in this price range is the Simpson PS61201 with 3500 PSI.
  • In its respective price range, the water flow of this washer, 2.5 GPM (gallons per minute), ranks as average. If maximum rinsing efficiency is your top priority, one of the devices with the highest water flow in the same price range is the Lifan LFQ3370E, with a GPM of 3.
  • In comparison to other gas-powered units of similar price, the 8000 Cleaning Units (PSI X GPM) of the MSH3125-S are average. If the highest overall cleaning power is your top priority, the Lifan LFQ3370E, which can reach up to 9900 Cleaning Units, is one of the most efficient of the devices in the current price range.

Price comparison

As you can see from these interactive charts, when compared to other gas-powered washers between 8000 and 8500 Cleaning Units, the Simpson MSH3125-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

STRENGTHS:
  • In the expected price range
  • Honda engine
  • Designed to be stable
  • Good range of nozzles included
  • Automatic detergent dilution
  • Onboard storage
  • Several security features
AVERAGE SPECS:
  • Decent PSI for the price
  • Decent GPM for the price
  • Decent 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, 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 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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