---
product_id: 653578629
title: "Aluminum Series 4200 PSI Gas Pressure Washer, 4.0 GPM, Honda GX390"
brand: "simpson"
price: "4617776CFA"
currency: XOF
in_stock: true
category: "Simpson"
url: https://www.desertcart.sn/products/653578629-aluminum-series-4200-psi-gas-pressure-washer-4-0-gpm
store_origin: SN
region: Senegal
---

# 4.0 GPM flow rate 4200 PSI power blast Honda GX390 pro engine Aluminum Series 4200 PSI Gas Pressure Washer, 4.0 GPM, Honda GX390

**Brand:** simpson
**Price:** 4617776CFA
**Availability:** ✅ In Stock

## Summary

> 🚀 Power through grime like a pro with SIMPSON’s unstoppable pressure washer!

## Quick Answers

- **What is this?** Aluminum Series 4200 PSI Gas Pressure Washer, 4.0 GPM, Honda GX390 by simpson
- **How much does it cost?** 4617776CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/653578629-aluminum-series-4200-psi-gas-pressure-washer-4-0-gpm)

## 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

- • **Built to Last:** Honda GX390 engine with low-oil shutdown and CAT triplex pump with thermal relief for extended life.
- • **Precision Control:** Five quick-connect nozzles plus a professional spray gun with safety lock for versatile cleaning.
- • **Effortless Mobility:** 13" pneumatic tires and balanced design glide smoothly over any terrain.
- • **Pro-Grade Durability:** Aircraft-grade aluminum frame resists corrosion and keeps weight low for easy transport.
- • **Unmatched Cleaning Power:** 4200 PSI and 4.0 GPM deliver contractor-grade performance for every tough job.

## Overview

The SIMPSON Aluminum Series 4200 PSI Gas Pressure Washer combines a powerful Honda GX390 engine with a rugged CAT triplex pump and lightweight aircraft-grade aluminum frame. Designed for professional contractors, it offers 4.0 GPM flow, a 50-foot kink-resistant hose, and five quick-connect nozzles for versatile cleaning. Its durable build and smooth mobility make it ideal for demanding commercial and residential cleaning tasks.

## Description

The SIMPSON Aluminum Series pressure washer 4200 PSI at 4.0 GPM is great for construction, equipment upkeep, and facility and fleet maintenance cleaning. With a powerful HONDA GX390 engine, reliable CAT triplex pump, and ultra lightweight aircraft grade aluminum frame, this pressure washer is the optimum blend of maneuverability and performance. The ALH4240 also comes with a 50’ hose, ergonomic spray gun, and 5 Quick Connect nozzles. Designed to meet the rigorous demands of the cleaning professional, the SIMPSON Aluminum Series frame is crafted of 100% aircraft grade aluminum, making it lighter in weight than most steel frame pressure washer designs. Perfect for contractors who specialize in deck cleaning, wood restoration, paint preparation, graffiti removal and all other professional cleaning services. The SIMPSON Aluminum Series designed for optimum performance in the harshest environments. Easy-to-assemble and easy-to-start, the Aluminum Series power washer is great for contractors who specialize in deck cleaning, wood restoration, and all professional services. 10 Year Limited Frame Warranty, 5 Year Limited Pump Warranty, 3 Year Limited Engine Warranty. Includes: Pressure Washer, Hose, Gun, Wand, 5 Quick connect nozzle tips, Detergent siphon tube with filter, Engine Oil, Quick start set up guide, Owner's manual.

## Features

- SIMPSON PRESSURE WASHER FOR PROFESSIONALS: The Simpson Aluminum Series gas power washer cleans decks, driveways, siding, fencing, equipment, and graffiti; The cold water machine is great for contractors; 49-State Compliant (Not for sale in California)
- ENGINE & PUMP: HONDA GX390 engine starts easily & includes low-oil shutdown; 4200 PSI 4.0 GPM CAT triplex plunger pump includes thermal relief to prevent overheating; Advanced oil seal technology & ceramic coated pistons extend seal life
- LONG HOSE REACH: The Simpson Monster series 50' dual-braided high-pressure hose resists kinks and abrasion; Non-marring polyurethane jacket helps protect finished surfaces; Threaded M22 pump/hose connection
- EASY MOBILITY: 13" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; Aircraft grade aluminum frame with powder-coated finish is easy to assemble and resists corrosion; 38" L x 23.5" W x 29" H; 133 lb
- PRO PRESSURE WASHER ACCESSORIES: Five quick-connect pressure washer tips (0°, 15°, 25°, 40°, and soap nozzle) cover tasks from stripping paint to car cleaning; Professional QC spray gun with safety lock-out and 16" spray wand included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00U77BYF6 |
| Best Sellers Rank | #26,606 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #159 in Pressure Washers |
| Brand Name | SIMPSON |
| Color | Red |
| Customer Reviews | 4.1 4.1 out of 5 stars (518) |
| Global Trade Identification Number | 00879399001345 |
| Hose Length | 50 inches |
| Included Components | Aluminum 4200PSI,4.0GPM,Gas GX390 |
| Item Dimensions L x W x H | 38"L x 23.5"W x 29"H |
| Item Type Name | Gas Pressure Washer, 4.0 GPM Commercial Power Washer, Cold Water, Honda GX390 Engine, 50' Hose, Aluminum Series, 49-State Compliant (ALH3228-S) |
| Item Weight | 124 pounds |
| Manufacturer | SIMPSON |
| Manufacturer Part Number | ALH4240 |
| Manufacturer Warranty Description | Warranty Details: Engine - 3 Year Limited Commercial Warranty | Pump - 5 Year Limited Warranty | Frame - 1 Year Limited Warranty |
| Maximum Flow Rate | 4 gpm |
| Maximum Pressure | 4200 psi |
| Model Number | ALH4240 |
| Power Source | Gasoline |
| Tank Volume | 2.5 gallons |
| UPC | 879399001345 |
| Unit Count | 1 Count |
| Wand Length | 31 inches |

## Product Details

- **Brand:** SIMPSON
- **Color:** Red
- **Global Trade Identification Number:** 00879399001345
- **Hose Length:** 50 inches
- **Item Weight:** 124 pounds
- **Maximum Flow Rate:** 4 gpm
- **Maximum Pressure:** 4200 psi
- **Power Source:** Gasoline
- **Product Dimensions:** 38"L x 23.5"W x 29"H
- **Tank Volume:** 2.5 gallons

## Images

![Aluminum Series 4200 PSI Gas Pressure Washer, 4.0 GPM, Honda GX390 - Image 1](https://m.media-amazon.com/images/I/81ggnYtX-eL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does this have container for soap or chemicals?**
A: No . Not a container, it has a siphon tube that draws directly from your supplied container ..IE gallon , quart, 5 gallon container.

**Q: Does the 4200 psi model have an adjustable cat pump and chemical hose attachment?**
A: Hello! Yes, this model has an adjustable cat pump and chemical hose attachment. Thanks.

**Q: Does it include surface cleaner?**
A: No it does not

**Q: do this take a oil filter?**
A: I have a slightly different model, but no oil filter. Just change the oil regularly. Dump out on one side. Put same amount back in. Honda commercial engines are bullet proof!

## Frequently Bought Together

- Simpson Cleaning 4200 PSI Gas Pressure Washer, 4.0 GPM Power Washer for Commercial Use, Honda GX390 Engine, 50-Foot Steel-Braided Hose, Aluminum Series, 49-State (ALH4240)
- BE Pressure 4000 PSI Whirl-A-Way Surface Cleaner Size: 20"
- Raincovo Pressure Washer Quick Connect 3/8 Inch, Pressure Washer Fittings, Adapter Set, Male Thread, 4 Pieces

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**Shop now:** [https://www.desertcart.sn/products/653578629-aluminum-series-4200-psi-gas-pressure-washer-4-0-gpm](https://www.desertcart.sn/products/653578629-aluminum-series-4200-psi-gas-pressure-washer-4-0-gpm)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-09-15*