Simpson 4400 PSI 4 GPM Gas Powered Cold Water Pressure Washer with 389cc Honda Engine

Product Overview

The Simpson 4400 PSI 4 GPM Gas Powered Pressure Washer is a commercial-grade cold water cleaning machine designed for demanding residential, industrial, and professional cleaning applications. Powered by a 389cc Honda GX390 engine, this pressure washer delivers exceptional cleaning performance capable of removing heavy dirt, grease, mud, mold, and stains from concrete, decks, equipment, vehicles, and commercial surfaces.

With a powerful output of 4400 PSI and 4.0 GPM, the washer combines high pressure with strong water flow to clean large surfaces quickly and efficiently. It features an AAA industrial triplex plunger pump, engineered for durability and long service life under heavy-duty use.

Built on a welded steel frame with large pneumatic tires, the Simpson pressure washer is designed for jobsite durability, portability, and long-term reliability. It is widely used by contractors, maintenance crews, property owners, and professionals who require serious cleaning power.

Key Features

Honda GX390 Commercial Engine
Provides reliable starting, strong torque, and extended engine life for demanding cleaning applications.

4400 PSI Maximum Pressure
Delivers aggressive cleaning performance for concrete, heavy grime, grease, and industrial cleaning tasks.

4.0 GPM Water Flow Rate
High water volume improves cleaning efficiency and faster rinsing on large surfaces.

AAA Industrial Triplex Pump
Commercial-grade plunger pump designed for durability and continuous heavy-duty operation.

Welded Steel Frame Construction
Heavy-duty steel frame increases durability and protects internal components during transport and operation.

50-Foot High-Pressure Hose
Long hose provides extended reach for large cleaning areas.

5 Quick-Connect Spray Nozzles Included
Includes 0°, 15°, 25°, 40°, and soap nozzles for multiple cleaning applications.

Premium Pneumatic Tires
Improves maneuverability across rough terrain and uneven job sites.

Uses

• Cleaning driveways, sidewalks, and concrete
• Washing heavy equipment and machinery
• Removing mold, grease, and stains
• Deck and fence restoration
• Commercial property maintenance
• Vehicle, trailer, and fleet cleaning

Benefits

Professional Cleaning Power
Commercial-level PSI and GPM provide fast and effective cleaning performance.

Efficient Large-Area Cleaning
Strong water flow reduces cleaning time on big surfaces.

Industrial Durability
Heavy-duty frame and triplex pump support long-term professional use.

Reliable Honda Engine Performance
Honda GX engines are widely trusted for durability and smooth operation.

Portable Jobsite Design
Large wheels and strong frame improve mobility during transport.

Advantages

• Commercial-grade cleaning capability
• Stronger than most residential pressure washers
• Reliable Honda GX390 engine platform
• Durable triplex pump for long lifespan
• Excellent for concrete and industrial cleaning
• Suitable for residential, commercial, and contractor use

Technical Specifications

Product Type: Gas Pressure Washer
Maximum Pressure: 4400 PSI
Water Flow Rate: 4.0 GPM
Engine: Honda GX390 389cc Commercial Engine
Pump Type: AAA Industrial Triplex Plunger Pump
Fuel Type: Gasoline
Hose Length: 50 feet
Frame Type: Welded Steel Frame
Wheel Type: Pneumatic Tires
Nozzles Included: 0°, 15°, 25°, 40°, Soap
Application: Residential / Commercial / Industrial Cleaning