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NorthStar Gas Cold Water Pressure Washer — 3.5 GPM, 4000 PSI, Model# 15782020
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NorthStar Gas Cold Water Pressure Washer — 3.5 GPM, 4000 PSI, Model# 15782020

Item# 15782020

Was $1399.99
Sale $1299.99

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Manufacturer's Warranty: 4 Yr Consumer/2 Yr Commercial

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Product Summary


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This NorthStar Gas Cold Water Pressure Washer is designed to handle the most demanding professional and rental applications. The industrial-grade Honda GX390 389cc OHV engine features a cast iron sleeve, and a horizontal shaft design for up to five times longer life than vertical shaft engines. A premium-quality Cat direct drive axial pump with ceramic plungers and a forged brass manifold provide superior performance and durability.

NorthStar pressure washers undergo thousands of hours of rigorous testing to ensure peak performance, plus include an industry-leading warranty to give you extra peace of mind.

What's Included

  • (1) Pressure washer
  • (1) 50-ft. nonmarking high-pressure hose
  • (1) 3-ft. lance
  • (5) Quick-couple nozzles
  • (1) Downstream chemical injector
  • (1) Nozzle holder
High Performance

Ultimate Performance

Cleans Faster, Saves Time and Money

Even the toughest cleaning jobs are no match for this high-volume NorthStar Pressure Washer. With 3.5 GPM and 4000 PSI at your fingertips, you can blast through mud, dirt and debris quicker and more easily, boosting productivity and saving money. This high performance NorthStar Pressure Washer is an outstanding investment for protecting and maintaining equipment and property at home, job sites, factories, businesses and more.

Powerful Honda Engine

Never worry about your NorthStar Pressure Washer being ready for the task at hand. The commercial-grade Honda GX390 engine provides the ultimate reliability, plus easy-start convenience, improved power, greater fuel efficiency, longer run time and quieter operation.

Superior Quality and Durability

Proven Reliability

Equipped with a high-quality Cat triplex pump, this NorthStar Pressure Washer delivers field-proven dependability. The pump's direct drive design requires fewer moving parts, minimizing maintenance and maximizing value.

Greater Resistance, Longer Life

Small details make a big difference. The Cat pump used in this high-performance NorthStar Pressure Washer is designed with high-end ceramic plungers to provide maximum resistance to corrosion and abrasion, helping to extend pump life.

Rugged, Easy to Push, Low in Vibration

All of it adds up to a cart worthy of the NorthStar Pressure Washer. The premium push-down style cart with large 15in. pneumatic tires is easy to maneuver from job to job, saving time and effort. A rugged 1 3/8in. steel full roll cage provides maximum protection, an essential feature for withstanding the hard knocks of job sites. We took it a step further, engineering a unique vibration isolation system to help protect the pump and engine from excessive wear.

Superior Quality
Convenient Features

Convenience Features

Save Time and Effort

The NorthStar pressure washer goes beyond power and performance with a long list of convenience features. With the removable NorthStar nozzle holder, the right nozzle is at your fingertips at all times — simply attach it to the pressure washer or to your belt. Adjustable pressure means you're ready for virtually every job, big or small. Pump oil checks are quick and convenient using the handy sight glass. We've even made recoil pulling smoother and easier with Easy Start. A full complement of accessories is included but for even more options and capabilities, a full-featured accessory kit is available.

Proven Quality

Unparalleled Testing

No one builds pressure washers better. And no one tests pressure washers more. Northern Tool + Equipment engineers put each NorthStar pressure washer component through a series of extensive, real-world procedures in our Faribault, MN testing facility and in the field. Before you put your pressure washer to the test for the first time, you can feel confident that we already have.

Setting the Standard for Over 20 Years

For over two decades, NorthStar has set the standard for quality, performance and reliability. Contractors, professionals and do-it-yourselfers trust the superior quality of NorthStar to get the job done right the first time, every time.

Unparalelled Testing
Limited Warranty

The NorthStar Advantage

Industry Leading Warranty

NorthStar pressure washers are built to last. But to give you extra peace of mind, we stand behind our product with an industry-leading 4-year limited warranty.

Guaranteed Satisfaction

Shop in complete confidence, knowing that Northern Tool + Equipment protects your investment and is ready to provide you with the assistance and helpful resources you need.

Superior Service and Support

Should you ever need service or support, help is a phone call or e-mail away. NorthStar's field-trained technical staff is ready to help. For convenience, our professional in-store service department performs all repairs on site. Replacement parts are stocked at our Northern Tool + Equipment warehouse and ready to ship the same day your order is received.

Features + Benefits

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Features for NorthStar Gas Cold Water Pressure Washer — 3.5 GPM, 4000 PSI, Model# 15782020
  • Honda GX390 389cc OHV engine for quiet, reliable performance
  • Cat direct drive triplex pump for superior durability
  • Premium push-down style steel cart with roll cage for smooth, balanced maneuvering and protection
  • 15in. pneumatic wheels
  • Easy Start prevents pressure buildup for smoother, easier recoil pulling
  • Sight glass allows for quick, convenient pump oil checks
  • Removable NorthStar nozzle holder system attaches to pressure washer or user's belt for easy access
  • Includes 50-ft. gray nonmarking high-pressure hose, 3-ft. lance, downstream chemical injector and five quick-couple professional nozzles (0°, 15°, 25°, 40° and chemical/soap)
  • Full-featured accessory kit available, Item# 720156, sold separately
  • 4-year consumer limited warranty; 2-year commercial limited warranty; 3-year limited warranty on Honda GX engine

Key Specs

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Item#15782020
Ship Weight191.0 lbs
Pressure (PSI)4,000
Flow (GPM)3.5
EngineHonda
Engine ModelGX390
Engine Displacement (cc)389
Gross Torque18.5
PumpCat
DriveDirect
GunIndustrial rear entry w/ 3 ft. lance
Nozzle TypeQuick-connect
Orifice Size3.5
Hose50-ft. nonmarking high-pressure
Coupler Size (in.)3/8
CartPush-down style steel cart
Fuel Capacity (gal.)1.6
Max. Inlet Water Temp (°F)140
Max. Output Water Temp (°F)140
Fuel TypeGasoline
Chemical InjectorYes
Adjustable PressureYes
Engine Oil TypeSAE30
Pump Oil Type30W nondetergent
Engine Oil IncludedNo
Pump Oil IncludedYes
Low Oil ShutdownYes
Thermal ProtectorYes
Dimensions L x W x H (in.)42.25 x 26 x 42.25

Customer Reviews

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Product Question + Answer

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Featured Accessories — Hand Picked by our Product Experts

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Pressure Washer Accessory Kits

NorthStar Pressure Washer Accessory Kit — For NorthStar 3.5 GPM 4000 PSI Pressure Washer, Item# 15782020 NorthStar Pressure Washer Accessory Kit — For NorthStar 3.5 GPM 4000 PSI Pressure Washer, Item# 15782020
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NorthStar Pressure Washer Chemical Jug Kit, Model# 720160 NorthStar Pressure Washer Chemical Jug Kit, Model# 720160
Item# 720160
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Pressure Washer Turbo Nozzles

Super Heavy-Duty Turbo Nozzle
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Pressure Washer Chemical Cleaners

All-Purpose Pressure Washer Cleaner — 1 Gallon, Model# MGC1 All-Purpose Pressure Washer Cleaner — 1 Gallon, Model# MGC1
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Pressure Washer Pumps

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Safety Products

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3M Metaliks Sport Safety Eyewear, Gray Lens 3M Metaliks Sport Safety Eyewear, Gray Lens
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Hearing Protection

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Extended Warranty

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Service Protection Plus

Manufacturer Warranty:
4 Yr Consumer/2 Yr Commercial

Protect your purchase beyond the manufacturer's warranty
with Service Protection Plus!

DESCRIPTION (Click More Info for details) 1 Year Extension 2 Year Extension
Extended Warranty Repair Plan
Only $99.99
More Info
Only $169.99
More Info
Extended Warranty + Accidental Damage Repair Plan
Only $149.99
More Info
Only $249.99
More Info
View + Compare All Plans

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NorthStar Gas Cold Water Pressure Washer — 3.5 GPM, 4000 PSI, Model# 15782020 The price is $1,299.99.
NorthStar Gas Cold Water Pressure Washer — 3.5 GPM, 4000 PSI, Model# 15782020
(Not Yet Rated - New)
Item# 15782020
In Stock Online
Was $1399.99
Sale $1299.99
Hide Similarities
Pressure (PSI)
3,000 3,000 3,000 3,300 4,000
Flow (GPM)
2.5 2.5 2.5 3.0 3.5
Engine
Honda Honda Honda Honda Honda
Engine Model GC190 OHC GX160 OHV GX160 GX270 GX390
Engine Displacement (cc)
187 163 163 270 389
Gross Torque
8.3 7.6 7.3 13.1 18.5
Pump Comet AXD Comet AXD CAT 4DNX CAT 4SPX Cat
Drive Direct Direct Direct Direct Direct
Gun 3-ft. lance 3-ft. lance Industrial rear entry w/ 3 ft. lance Industrial rear entry w/ 3 ft. lance Industrial rear entry w/ 3 ft. lance
Nozzle Type Five quick-couple Five quick-couple Quick-connect Quick-connect Quick-connect
Orifice Size 3.0 3.0 3.0 3.5 3.5
Hose 25-ft. nonmarking high-pressure 50-ft. nonmarking high-pressure 50-ft. gray high-pressure 50-ft. gray high-pressure 50-ft. nonmarking high-pressure
Coupler Size (in.) 3/8 3/8 3/8 3/8 3/8
Cart Push-down style steel cart Push-down style steel cart Push-down style steel cart Steel push-down Push-down style steel cart
Fuel Capacity (gal.)
0.475 0.83 0.83 1.4 1.6
Max. Inlet Water Temp (°F) 140 140 140 140 140
Max. Output Water Temp (°F) 140 140 140 140 140
Fuel Type Gasoline Gasoline Gasoline Gasoline Gasoline
Chemical Injector Downstream Downstream Yes Yes Yes
Adjustable Pressure Yes Yes Yes Yes Yes
Engine Oil Type SAE30 SAE30 SAE30 SAE30 SAE30
Pump Oil Type Universal tractor transmission oil Universal tractor transmission oil SAE 30 nondetergent SAE 30 nondetergent 30W nondetergent
Engine Oil Included No No No No No
Pump Oil Included Yes Yes Yes Yes Yes
Low Oil Shutdown
No Yes Yes Yes Yes
Thermal Protector Yes Yes Yes Yes Yes
Dimensions L x W x H (in.)
33 x 21.5 x 38 33 x 21.5 x 38 33 x 21.5 x 38 33 x 21.5 x 38 42.25 x 26 x 42.25