SIMPSON ALH3225-S Aluminum 3200 PSI @ 2.5 GPM, Gas Pressure Washer KOHLER SH265 ENGINE

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SIMPSON ALH3225-S Aluminum 3200 PSI @ 2.5 GPM, Gas Pressure Washer KOHLER SH265 ENGINE

SIMPSON ALH3225-S Features:

  • The SIMPSON ALH3225-S is run by a KOHLER® SH265 OHV Engine. This engine is designed to be started easily and offer high power. It is a Direct Drive engine and pump for streamlined power from the engine to the pump. The pump on this model is an AAA™ Industrial Triplex Pump with PowerBoost™ Technology. This gas-powered unit has a 1-quart fuel tank.
  • This model sprays water at 3200 psi and a flow rate of 2.5 gpm. The high pressure hose has Easy Connectors for easy connection with the Dial-N-Wash® Spray Gun and Wand, and five Quick Connect Nozzles. There is also a downstream detergent injection system.
  • This unit has 10-inch premium pneumatic tires. It has an aircraft grade aluminum platform with brushed extruded aluminum tubing 1 and ¼ inches round. There is also available storage on board.
  • The SIMPSON ALH3225-S has a Limited Warranty for Commercial use. It comes with 2 years for the Kohler engine, 5 years for the AAA pump, 10 years for the frame components, and 90 days for the spray accessories.


SIMPSON ALH3225-S Aluminum Gas Pressure Washer is a perfect, portable power washer, suitable for anyone from pro to amateur. It can handle rigorous demands of the professional contractor thanks to its SIMPSON® Aluminum Series frame, made of aluminum alloy. It’s lighter than many other steel designs, making it even better for on-the-go performance. Use this helpful tool anytime for power washing walls, decks, paint, and more.

The SIMPSON ALH3225-S has plenty of power for the job. It offers 3200 psi and a flow rate of 2.5 gpm, coming from a hose system with Easy Connectors, and a Dial-N-Wash® Spray Gun and Wand, as well as five Quick Connect Nozzles. It also has a downstream detergent injection system.

This power comes from a KOHLER® SH265 OHV gas-powered engine with a 1-quart fuel tank. This engine has an easy start for easy use and high power. The KOHLER® SH265 is a Direct Drive engine and pump for streamlined power. The pump on this unit is the AAA™ Industrial Triplex Pump with PowerBoost™ Technology.  

If you need a portable pressure washer, look no further. Contact Nationwide Generators today and find out more!

Model: ALH3225-S Short Description:
SIMPSON Aluminum 3200 PSI @ 2.5 GPM, Gas Pressure Washer
Item # 60686 UPC 8 79399 00132 1     Ships UPS? No
• Direct Drive Engine & Pump for Streamlined Power Transmission from Engine to Pump
• KOHLER® SH265 OHV Engine Designed for Easy Start and High Output
• AAA™ Industrial Triplex Pump w/ PowerBoost™ Technology
• Aircraft Grade Aluminum Platform with Brushed Extruded Aluminum Tubing
• 10" Pneumatic Tires
• 1 Qt. Fuel Tank
• 5/16" x 35' MorFlex™ High Pressure Hose with Easy Connectors
• Downstream Detergent Injection System
• Dial-N-Wash® Spray Gun & Wand with 5 Quick Connect Nozzles
Water Pressure 3200 PSI
Flow Rate 2.5 GPM
Engine  KOHLER® SH265 OHV Engine
Pump   AAA Industrial Triplex with POWERBOOST™
Wheels 10" Premium Pneumatic Tires 
Pump/Hose Easy Connector Yes
Hose 5/16" x 35' MorFlex Hose with Easy Connectors
Hose/Gun Easy Connector Yes
Wand Type Quick Connect Spray Wand
Engine Orientation Horizontal 
Frame Aircraft Grade Aluminum Platform with Brushed Extruded Aluminum Tubing
Frame Tube Style 1-1/4" Round
Frame Handle Style Horizontal 
Accessory Storage On-board
Warranty Limited Warranty - Commercial Use - 2 Years on KOHLER engine, 5 Years on AAA pump, 10 Years on frame components, 90 Days on spray accessory items
Master Length (inches) 23.5 Product Length (inches) 34
Master Width (inches) 21 Product Width (inches) 21.5
Master Height (inches) 22.25 Product Height (inches) 22.5
Master Weight (pounds) w/o pallet 74 Product Weight (pounds) 67
Assembled in the USA of Domestic and Foreign Components

8 Reviews

  • 5
    Great Unit and at Great Price

    Posted by Mark J. on 13th May 2018

    I am so satisfied with this purchase. Works great and does an outstanding job on all surfaces. Cleaned a brick sandstone planter WOW! Looks so good.... I am very happy with my selection of this Simpson model and National Generators thanks for the great service on this purchase!

  • 5
    power washer extreme

    Posted by billy on 22nd Feb 2018

    Easy set up and easy to use quick start powerful I washed the house already. The wand was damaged upon arrival I made a call and and new one should be on the way.

  • 5
    Very Well Pleased

    Posted by James D. on 16th Aug 2016

    Started on the first pull and did a really good job on a very dirty driveway. I highly recommend this machine

  • 5
    Great, Reliable Machine!

    Posted by Ed K. on 29th Jul 2016

    I found this pressure washer to have more then enough power and it is easy to use. If you follow the proper procedure each time to start it up, it works fine. Be sure to add some fuel stabilizer unless you will change the fuel each week. The stabilizer keeps the gasoline viable with no problems. This engine has 2 oil fills because it is used on various machines and some have access on different sides. You can fill the oil on either side but changing oil should probably be done on the side with the drain hole on the deck plate, look for it. Adding oil is easier with a tapered end funnel. To start it follow the instructions. Be sure to turn on the fuel by moving the fuel switch to on, close the choke, move the slow fast lever to fast (Rabbit) then connect your hose which is turned on full. Remember to pull the trigger on the pressure hose to release pressure otherwise you will not be able to pull the cord.

    The handle is a little short so be prepared to stoop to move the unit. You may also have to put air in the tires as I did. The unit ships with the handle assembled backwards and the diagram isn't very clear. Remove the handle and reverse it to bolt it on to the lower portion of the unit. It would be useful to have a 3-5" extension on the handle to make it easier to move the unit around. It does vibrate when running so be prepared to chock the wheels or sit it on the grass so it doesn't move as easily. The rubber feet on the bottom came off so I added a split washer to the screws so they will not loosen again. Overall, I am very pleased with this pressure washer. I have had it about a week and used it 3-4 times during that period with a surface washer attachment a several nozzles. The wand that is supplied with the unit is a little short and needs to be replaced with a longer one for use with the surface cleaner attachment. Apparently the nozzle holder has been upgraded since it is now rubber so the nozzles no longer vibrate out as has been reported. Very pleased with its service so far and delivery was right on time. Thanks.

  • 5
    Simpson pressure washer

    Posted by Unknown on 18th Jul 2016

    I have only had this unit for a little less than 1 week but so far I am impressed starts easy and has plenty of power. Best of all was the supper fast shipping.

  • 5
    Money well spent

    Posted by Vincent on 5th Jul 2016

    Every thing I was looking for and more. Easy hook up also easy start with pressure control in wand.

  • 5
    Great product

    Posted by Jim on 19th May 2016

    Easy to start, great pressure,adjustable pressure works great.Great company to deal with.Ordered one day arrived the next.

  • 5
    Great Machine!

    Posted by Keith Schmidt on 26th Feb 2016

    Awesome Machine. Glad I did my homework. Best deal out there for a Triplex pump. Engine fired first pull, you absolutely can't go wrong with this machine. Couldn't be happier with my purchase.

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