---
product_id: 34952121
title: "Aluminum Series"
brand: "simpson"
price: "€ 2168.66"
currency: EUR
in_stock: null
reviews_count: 8
category: "Simpson"
url: https://www.desertcart.hr/products/34952121-aluminum-series
store_origin: HR
region: Croatia
---

# 10-inch pneumatic tires for terrain 3600 PSI @ 2.5 GPM power Maintenance-free AAA triplex pump Aluminum Series

**Brand:** simpson
**Price:** € 2168.66
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Clean like a pro, roll like a boss!

## Quick Answers

- **What is this?** Aluminum Series by simpson
- **How much does it cost?** € 2168.66 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/34952121-aluminum-series)

## Best For

- simpson enthusiasts

## Why This Product

- Trusted simpson brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smooth Mobility:** Premium 10" pneumatic tires glide over any jobsite terrain
- • **Plug & Play Setup:** Threaded M22 connections and quick-connect nozzles speed assembly
- • **Pro-Grade Powerhouse:** Honda GX200 engine + 3600 PSI pump crush grime fast
- • **All-Inclusive Pro Kit:** Morflex hose, 5 nozzle tips, steel wand & safety-lock spray gun included
- • **Rugged Yet Lightweight:** Aircraft-grade aluminum frame resists corrosion & cuts weight

## Overview

The SIMPSON Aluminum Series ALH3425 is a commercial-grade gas-powered pressure washer featuring a reliable Honda GX200 engine paired with a maintenance-free AAA industrial triplex pump delivering 3600 PSI at 2.5 GPM. Built on a corrosion-resistant aircraft-grade aluminum frame with 10-inch pneumatic tires, it offers durability and easy maneuverability across tough terrains. Equipped with a 35-ft kink-resistant Morflex hose, five quick-connect nozzles, a professional spray gun with safety lock, and thermal relief to prevent overheating, this 49-state compliant unit is designed for contractors and serious DIYers tackling deck cleaning, wood restoration, and concrete prep.

## Description

Built for pros, the SIMPSON Aluminum Series ALH3425 delivers 3,600 PSI at 2.5 GPM for fast, deep cleaning. Honda’s GX200 commercial engine teams with a maintenance-free AAA industrial triplex pump with PowerBoost for higher pressure at the nozzle. The aircraft-grade aluminum frame with brushed, extruded tubing resists corrosion and cuts weight, while 10" pneumatic tires roll easily over jobsite terrain. Includes a 35-ft MorFlex 5/16" high-pressure hose (non-marring, kink and abrasion resistant), ergonomic professional spray gun with safety lock-out, 16" steel wand, and 5 quick-connect nozzles (0°, 15°, 25°, 40°, soap). Threaded M22 connections speed setup; thermal relief helps prevent overheating. 49-state compliant and easy to start, this cold-water gas power washer is ideal for contractors handling deck cleaning, wood restoration, paint prep, equipment and concrete.

Review: This thing is a beast! - I read a LOT of reviews here on desertcart and other online resources before deciding to make such a sizable investment in this 4200 PSI/4.0 GPM machine. This is not my first pressure washer, but my third actually. Each time I upgraded in both PSI and gallons per minute. This is my first pressure washer that is categorized as commercial use. Having finally taken the time to put this machine to the test, I can honestly say this thing has more than enough power to satisfy the average homeowner or DIY’er. As I said in the title: this thing is a beast! Mine arrived complete and undamaged. Other reviewers reported scratches and dents but that was not my experience at all. Assembly was quick and easy. My shipment contained a quart of Amsoil synthetic 10W-30 for the engine crankcase but I have seen other reviewers that got their oil in a plastic pouch. Once assembled, the crankcase filled with the supplied oil, and the fuel tank filled 1/2 way, I hooked up the garden hose and bled the air out for 30+ seconds as recommended. Set the throttle to half-way and closed the choke and gave the starter a quick pull and it fired right up on the first attempt. After allowing the engine to run at partial throttle with the trigger open to keep the water flowing and the pump cooled for a few minutes, I increased the engine speed to approximately 3/4 and started cleaning the concrete patio as my first project with this unit. The pressure even at less than wide open on the Honda GX390 was more than enough to get the accumulated grime blasted off effortlessly. Next up, I connected my 15” surface cleaner which really sped up the process. The 4240 pressure and water flow are a perfect match for the Karcher 15” surface cleaner. With all of the positive attributes of this machine, there is one thing that I feel is a negative: the hose. It’s more than long enough for most jobs but the stiffness makes moving around with it a real challenge. Given the higher than average PSI capabilities of the ALH-4240 it’s not surprising that the pressure hose is more on the stiff side, but as others have commented, it would be a good idea to upgrade to a better hose. Honestly, at this price point, a better quality hose should come with it. Overall, the ALH-4240 is a great pressure washer that has all of the power that the average person could want for DIY use. The high PSI and GPM make short work out of even the toughest cleaning projects. Time will tell if it lives up to the Simpson advertised claims of dependability and reliability.
Review: Honda + CAT pumps = Quality - I'd like to start out by saying I own and operate a power washing company and this is my main work horse every day. I've owned the machine for a full year now so I figured I'd get desertcart my review. I've used this machine for over 6-700 hours in 100 degree heat to down into the 40s. It has never given me one hiccup or issue. I've changed the pump oil 3 times and the engine oil twice. I gave it a new Denso spark plug just because I was doing the maintenance on it. Pulled spark plug could have easily gone wagly longer. Machine starts on one pull every time. I do recommend the use of non ethanol gasoline and your carborator will never give you a problem gumming up. Do the maintenance! Honda delivers and excellent product with the GX390. I've used them for years. CAT pumps are top of the line and this little pump proves its worth every day. There are some cons, not with the machine but with the frame. The rubber feet that come on the front to support the machine and dampen vibration completely left chat maybe a week into using it and I leave the machine on the truck when it's in use soni had to improvise with some rubber pads so it wont vibrate a hole into the composite truck bed. The delivery people (UPS) delivered it upside down, thankfully the machine had no issues. Frame was bent up pretty badly to the point where the detachable handle didn't fit, I had to force it on and now it's stuck and the wheel was severely crooked rubbing on the side of the frame. I had to kick that like a mule to straighten it to the point where the rub is minor now. I'm not driving the thing cross country so this doesn't bother me at all. They did not pad the machine in the box barely at all. I believe they could do a lot better there. I looked past it and the machine works flawlessly The accessories that come with the machine were mostly junk. I always throw the gun in a box because they always fall apart after a month or so. The hose lasted a long time. I do not use the on board injector because my chemicals are not good for them so I always use my own downstream injector. Never fails with these machines that the exhaust housings rust out on them and usually fall apart after a couple years. They make all the parts for this machine still thankfully.

## Features

- Professional Performance: Easy-to-assemble and easy-to-start with its HONDA GX200 commercial series engine, the Aluminum Series power washer is great for contractors who specialize in deck cleaning, wood restoration, and all other professional services
- Power and Durability: A powerful, reliable, maintenance-free AAA industrial triplex plunger pump delivers 3600 PSI at 2.5 GPM and includes thermal relief to prevent overheating; PowerBoost Technology delivering higher pressure at the nozzle
- Sturdy and Portable: The aircraft grade aluminum platform with brushed extruded aluminum tubing offers durability and corrosion resistance; 10-inch premium pneumatic tires deliver ease of maneuverability across various terrain and uneven ground
- Includes Quality Simpson Accessories: Morflex 5/16-inch x 35-foot high-pressure hose is kink- and abrasion-resistant; 5 Quick connect nozzle tips: 0°, 15°, 25°, 40° and Soap; 16-inch steel wand/lance; Professional spray gun with safety lock-out
- Important Notes: 49-State Compliant; Keep max fuel level 1/2 Inch below bottom of filler neck to avoid spillage; Pump/Hose Connection: Threaded M22 connection

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00U30KGXI |
| Best Sellers Rank | #91,734 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #516 in Pressure Washers |
| Brand | SIMPSON |
| Color | Black & Red |
| Customer Reviews | 4.0 4.0 out of 5 stars (1,545) |
| Global Trade Identification Number | 00879399001352 |
| Hose Length | 25 Feet |
| Item Weight | 78.8 pounds |
| Item model number | ALH3425 |
| Manufacturer | Simpson Cleaning |
| Maximum Flow Rate | 2.5 Gallons Per Minute |
| Power Source | Gas Powered |
| Product Dimensions | 30"L x 24"W x 21"H |
| Specification Met | CARB, 49-State Compliant |
| Tank Volume | 2.5 Gallons |
| UPC | 879399001826 879399001352 |

## Product Details

- **Brand:** SIMPSON
- **Color:** Black & Red
- **Global Trade Identification Number:** 00879399001352
- **Hose Length:** 25 Feet
- **Item Weight:** 35.83 Kilograms
- **Maximum Flow Rate:** 2.5 Gallons Per Minute
- **Power Source:** Gas Powered
- **Product Dimensions:** 30"L x 24"W x 21"H
- **Specification Met:** CARB, 49-State Compliant
- **Tank Volume:** 2.5 Gallons

## Images

![Aluminum Series - Image 1](https://m.media-amazon.com/images/I/81HRGjn+KfL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Is the pressure adjustable on this washer?.**
A: Simply use a 5000 psi ball valve… You can adjust the pressure out of the tip to anything you want

**Q: What is the return policy? If I return it do I have to pay shipping?**
A: As far as I know you can return it without shipping cost, but I don't think you will want to, it's a great machine.

**Q: How many CC is the motor**
A: Hello,

196 CC's

**Q: Is the pump a cat pump?  why does description say aaa pump?**
A: The newer ones come with a blue Colored CAT pump. Now all the pump models are the same, depends on what you ordered. Mines 4200 4gpm

## Customer Reviews

### ⭐⭐⭐⭐⭐ This thing is a beast!
*by K***. on September 17, 2024*

I read a LOT of reviews here on Amazon and other online resources before deciding to make such a sizable investment in this 4200 PSI/4.0 GPM machine. This is not my first pressure washer, but my third actually. Each time I upgraded in both PSI and gallons per minute. This is my first pressure washer that is categorized as commercial use. Having finally taken the time to put this machine to the test, I can honestly say this thing has more than enough power to satisfy the average homeowner or DIY’er. As I said in the title: this thing is a beast! Mine arrived complete and undamaged. Other reviewers reported scratches and dents but that was not my experience at all. Assembly was quick and easy. My shipment contained a quart of Amsoil synthetic 10W-30 for the engine crankcase but I have seen other reviewers that got their oil in a plastic pouch. Once assembled, the crankcase filled with the supplied oil, and the fuel tank filled 1/2 way, I hooked up the garden hose and bled the air out for 30+ seconds as recommended. Set the throttle to half-way and closed the choke and gave the starter a quick pull and it fired right up on the first attempt. After allowing the engine to run at partial throttle with the trigger open to keep the water flowing and the pump cooled for a few minutes, I increased the engine speed to approximately 3/4 and started cleaning the concrete patio as my first project with this unit. The pressure even at less than wide open on the Honda GX390 was more than enough to get the accumulated grime blasted off effortlessly. Next up, I connected my 15” surface cleaner which really sped up the process. The 4240 pressure and water flow are a perfect match for the Karcher 15” surface cleaner. With all of the positive attributes of this machine, there is one thing that I feel is a negative: the hose. It’s more than long enough for most jobs but the stiffness makes moving around with it a real challenge. Given the higher than average PSI capabilities of the ALH-4240 it’s not surprising that the pressure hose is more on the stiff side, but as others have commented, it would be a good idea to upgrade to a better hose. Honestly, at this price point, a better quality hose should come with it. Overall, the ALH-4240 is a great pressure washer that has all of the power that the average person could want for DIY use. The high PSI and GPM make short work out of even the toughest cleaning projects. Time will tell if it lives up to the Simpson advertised claims of dependability and reliability.

### ⭐⭐⭐⭐⭐ Honda + CAT pumps = Quality
*by M***D on April 20, 2024*

I'd like to start out by saying I own and operate a power washing company and this is my main work horse every day. I've owned the machine for a full year now so I figured I'd get Amazon my review. I've used this machine for over 6-700 hours in 100 degree heat to down into the 40s. It has never given me one hiccup or issue. I've changed the pump oil 3 times and the engine oil twice. I gave it a new Denso spark plug just because I was doing the maintenance on it. Pulled spark plug could have easily gone wagly longer. Machine starts on one pull every time. I do recommend the use of non ethanol gasoline and your carborator will never give you a problem gumming up. Do the maintenance! Honda delivers and excellent product with the GX390. I've used them for years. CAT pumps are top of the line and this little pump proves its worth every day. There are some cons, not with the machine but with the frame. The rubber feet that come on the front to support the machine and dampen vibration completely left chat maybe a week into using it and I leave the machine on the truck when it's in use soni had to improvise with some rubber pads so it wont vibrate a hole into the composite truck bed. The delivery people (UPS) delivered it upside down, thankfully the machine had no issues. Frame was bent up pretty badly to the point where the detachable handle didn't fit, I had to force it on and now it's stuck and the wheel was severely crooked rubbing on the side of the frame. I had to kick that like a mule to straighten it to the point where the rub is minor now. I'm not driving the thing cross country so this doesn't bother me at all. They did not pad the machine in the box barely at all. I believe they could do a lot better there. I looked past it and the machine works flawlessly The accessories that come with the machine were mostly junk. I always throw the gun in a box because they always fall apart after a month or so. The hose lasted a long time. I do not use the on board injector because my chemicals are not good for them so I always use my own downstream injector. Never fails with these machines that the exhaust housings rust out on them and usually fall apart after a couple years. They make all the parts for this machine still thankfully.

### ⭐ Powerful BUT it is VERY HARD to START, NO customer service al all
*by C***I on March 8, 2022*

When it is working, it’s so powerful and smooth. Design and built seems and feels high end and durable, however, it is VERY HARD to start. If the first full doesn’t start, no chance to start at second attempt. I owned gas pressure washer for almost 30 years, none of previous ones does that. It is way more pickier than my previous Excel. The Excel lasts 15 years for me. First, it is picky about fresh gas, it refused to start while brand new maybe just because the gas was two months old, now again, it won't start because the gas was almost two months again. My previous Excel can use gas more than 6 months old, Simpson engine is a princess--high maintenance picky machine. Second, the pressure built up so fast, if the first attempt wasn't successful, no way to start at the second. Even my neighbor who got a cheaper model of Simpson said this one is TIGHT. I'm so SCARED of starting it every time, needs a lot of pulls and luck. Excel only needs about 1-2 seconds of release pressure , this Simpson really needs 30 seconds to try my second luck. To start the machine is a TWO man job, one has to release the trigger on the other end constantly!! Third, even if I'm lucky to start it, it coughs/farts often and I have to be very careful to move the engine from choke to normal SLOWLY, otherwise it stops. Fourth, it gives farts loud several times when switched to off position. None of my previous ones did that, not once. Now I have to get used to the random noise after spending $800! Ordered one electric pressure washer last night, I'm done with the gas one especially with NO HELP from the seller...weird from day 1 Tech support is NOT responsive at all! My question never received answer.

## Frequently Bought Together

- Simpson Cleaning 3600 PSI Gas Pressure Washer, 2.5 GPM Power Washer for Commercial Use, Honda GX200 Engine, 35-Foot MorFlex Hose, Aluminum Series, 49-State (ALH3425)
- Simpson Cleaning 80143 3600 PSI Universal Turbo Pressure Washer Nozzle, 1/4-Inch Quick Connect, Hot- or Cold-Water Use, Black
- Simpson Cleaning 40226 Morflex Series 3700 PSI Pressure Washer Hose, Cold Water Use, 5/16 Inch Inner Diameter, 50 Feet, Natural

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-04*