Built to meet the rigorous demands of professional cleaning, the SIMPSON® pressure washer combines a powerful 420cc OHV Commercial Series engine with a durable AAA triplex pump and adjustable unloader. Delivering up to 4,400 PSI and 4.0 GPM, it is designed to tackle demanding cleaning jobs quickly and efficiently. A heavy-duty welded steel frame, steel axle, 13-inch pneumatic tires, onboard accessory storage, and a professional-style spray gun provide the durability, mobility, and convenience needed for extended cleaning applications. The included 50-foot Monster steel-braided hose and five stainless-steel quick-connect nozzles make it ready for a wide variety of cleaning tasks.

Key Features

SIMPSON® 420cc OHV Commercial Series Engine

The 420cc OHV Commercial Series engine delivers reliable power for professional cleaning applications.

• 420cc OHV engine
• Recoil starter
• 1.71-gallon fuel tank
• Low-oil shutdown for added engine protection
• 3-year limited engine warranty

AAA Triplex Pump with Adjustable Unloader

The AAA triplex pump is engineered for demanding pressure-washing applications and provides adjustable pressure to match the cleaning task.

• Up to 4,400 PSI
• Up to 4.0 GPM
• Adjustable unloader
• Runs cooler than axial-style pumps
• Rebuildable design
• 5-year limited pump warranty

Heavy-Duty Welded Steel Frame

The rugged welded steel frame is built to withstand demanding job-site conditions.

• Heavy-duty welded steel construction
• Steel axle
• Unique handle system
• Handle design helps protect the pump while providing additional leverage
• 10-year limited frame warranty

13-Inch Pneumatic Tires

Large 13-inch pneumatic tires provide easy maneuverability across varied terrain while helping absorb vibration during operation.

Onboard Accessory Storage

Integrated storage keeps essential accessories organized and accessible.

• Nozzle holder
• Spray gun hooks
• Hose storage
• Convenient onboard organization

Five Stainless-Steel Quick-Connect Nozzles

Five included nozzles provide different spray patterns for a range of cleaning applications:

• 0° nozzle
• 15° nozzle
• 25° nozzle
• 40° nozzle
• Soap nozzle

Pro-Style Spray Gun & Wand

The professional-style spray gun features an ergonomic grip and safety lock-out for improved comfort and control.

• Ergonomic comfort grip
• Safety lock-out
• 31-inch wand lance
• M22 connector
• Compatible with many accessories

Monster Steel-Braided Hose

The included 3/8-inch x 50-foot Monster Hose uses wire-reinforced construction for flexible durability.

• 50-foot length
• 3/8-inch diameter
• Wire-reinforced construction
• Quick-connect fittings
• Flexible and durable design

Cleaning Applications

The SIMPSON pressure washer is designed to tackle a variety of stubborn outdoor cleaning challenges, including:

• Dirt and mud
• Mildew
• Algae
• Mold
• Stains
• Watermarks
• Moss
• General residential and professional cleaning

Technical Specifications

Engine & Performance

Specification	Details
Engine	SIMPSON® 420cc OHV Commercial Series
Engine Brand	SIMPSON
Starter	Recoil
Engine Displacement	420cc
Fuel Type	Gas
Fuel Tank	1.71 gal.
Maximum Pressure	4,400 PSI
Maximum Flow	4.0 GPM
Pump	AAA Triplex
Pressure Control	Adjustable Unloader

Frame & Mobility

Specification	Details
Frame	Heavy-Duty Welded Steel
Axle	Steel
Tires	13" Pneumatic
Product Weight	138 lb.
Length	38"
Width	23.5"
Height	29"

Hose & Spray Equipment

Specification	Details
Hose	Monster Steel-Braided
Hose Length	50 ft.
Hose Diameter	3/8"
Hose Material	Wire Reinforced
Hose Connection	Quick Connect
Wand Length	31"
Wand Connection	M22
Spray Gun	Pro-Style with Ergonomic Grip
Safety Feature	Safety Lock-Out
Nozzles	0°, 15°, 25°, 40°, Soap
Nozzle Construction	Stainless Steel

Warranty Coverage

Component	Warranty
SIMPSON Engine	3-Year Limited Warranty
AAA Pump	5-Year Limited Warranty
Frame	10-Year Limited Warranty
Accessories	90-Day Limited Warranty

Note: The supplied specifications also list a 90-day consumer and commercial warranty, while the component-specific warranty information lists longer coverage for the engine, pump, and frame. The component-specific warranties are presented above as provided by the manufacturer information.

Model & Product Information

Specification	Details
Product Category	Pressure Washer
Power Type	Gas
Model Numbers	PS60843, PS61041-S
UPC	879399002670
Manufacturer	SIMPSON®

Built for Tough Cleaning Jobs

From removing stubborn mud and mildew to tackling moss, algae, mold, stains, and watermarks, this SIMPSON pressure washer is designed for demanding cleaning work. Its combination of a commercial-grade 420cc engine, rebuildable AAA triplex pump, adjustable pressure, rugged steel frame, and professional spray equipment provides a complete solution for serious cleaning applications.

Why Choose the SIMPSON 4400 PSI Pressure Washer?

• Up to 4,400 PSI and 4.0 GPM
• Powerful 420cc OHV Commercial Series engine
• Low-oil shutdown protection
• AAA triplex pump with adjustable unloader
• Rebuildable pump design
• Heavy-duty welded steel frame
• Steel axle and 13-inch pneumatic tires
• Onboard hose, gun, and nozzle storage
• Pro-style ergonomic spray gun
• 31-inch M22 wand lance
• 3/8" x 50' Monster steel-braided hose
• Five stainless-steel quick-connect nozzles
• Designed for demanding professional cleaning applications
• Long-term pump and frame warranty coverage

Maximum pressure and flow ratings are manufacturer specifications. Actual performance may vary depending on operating conditions, water supply, nozzle selection, and application.

• We currently ship within the United States only.
• Enjoy free standard shipping on all orders.
• Orders are processed within 1–2 business days.
• Estimated Total Delivery Time is 4–7 business days.
• Tracking information will be sent to your email within 24 hours after your order has been dispatched.
• For more information about our shipping process, please view our full Shipping Policy.

• Not satisfied? Return or exchange within 30 days.
• Items must be unused and in original condition.
• Damaged products are eligible for a refund or replacement.
• For more information about our return & refund process, please view our full Return & Refund Policy.

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