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๐ Clean like a pro, move like a boss!
The SIMPSON Aluminum Series 4200 PSI Gas Pressure Washer combines a powerful Honda GX390 engine with a durable CAT triplex pump and a 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 to tackle everything from deck cleaning to graffiti removal. With premium pneumatic tires and advanced thermal protection, this pressure washer delivers unmatched performance, mobility, and reliability on any job site.

















| ASIN | B00U77BYF6 |
| Best Sellers Rank | #24,387 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #144 in Pressure Washers |
| Brand Name | SIMPSON |
| Color | Red |
| Customer Reviews | 4.1 4.1 out of 5 stars (522) |
| 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 Highlight | Gas Power Washer For Professionals. CAT Triplex Pump, 50' Hose, Aluminum Frame, 5 Nozzles. 49-State Compliant. ALH4240 |
| 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 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Gasoline |
| Tank Volume | 2.5 gallons |
| UPC | 879399001345 |
| Unit Count | 1 Count |
| Wand Length | 31 inches |
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