Skip to content
STOCK YOUR SHOP: Save Up to 50%. Shop Now >
Northern Tool Equipment Logo TextNorthern Tool Equipment Logo text link to Home.
Print

Powerhorse Gas Cold Water Pressure Washer, 4400 PSI, 4.2 GPM

Item# 115179
Powerhorse Gas Cold Water Pressure Washer, 4400 PSI, 4.2 GPM

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

Powerhorse Gas Cold Water Pressure Washer, 4400 PSI, 4.2 GPM

Click or Tap image to Zoom

$999.99

  • Shipping: 

    Free shipping (lower 48 states) - Available now

    Heavy/large item. Lift gate service available.

  • Store Pickup: 

    Not Available
  • 4,400 PSI, 4.2 GPM Cleaning Performance: Combines powerful pressure with high water flow to quickly remove dirt, grime, mildew and other buildup
  • Powerhorse DH420 Gas Engine: 420cc engine delivers dependable power and 23 ft./lbs. gross torque for demanding cleaning applications
  • NorthStar Direct Drive Pump: Triplex pump features ceramic-coated plungers for improved durability and service life
  • Portable Wheeled Design: Pull-up-style cart design includes pneumatic tires, 50ft. braided hose, spray gun with 4ft. lance and (4) quick-connect nozzles
  • Integrated Detergent Tank: Allows convenient application of pressure washer chemicals for enhanced cleaning performance

See full description

Step Up to Hot for Pro Results

Powerhorse Hot Water Pressure Washer
Cleans Grease + Grime 2x Faster

Check It Out

Complete Your Solution

  • Powerhorse Gas Cold Water Pressure Washer, 4400 PSI, 4.2 GPM
  • NorthStar Rotating Pressure Washer Turbo Nozzle, 4.0 Orifice, 3000-5100 PSI, Model# NYR51K40BP
  • Powerhorse Pressure Washer Surface Cleaner, 16in. Dia., 3500 PSI, 5 GPM
  • Honda Power Equipment 10W-30 Motor Oil, 1-Qt. Bottle
Price for all four:

$1422.96

Frequently Bought Together

  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Accessories

  • Warranty

  • Compare

Product Summary

The Powerhorse Gas Cold Water Pressure Washer is built for users who need maximum cold water cleaning performance. Producing 4,400 PSI and 4.2 GPM, it delivers the power and water flow required to clean large surfaces faster while removing stubborn dirt, mud, grease and grime from driveways, heavy equipment, trailers, farm machinery, buildings and commercial vehicles. Powered by a 420cc OHV engine, this pressure washer provides dependable performance for demanding cleaning jobs. A commercial-grade triplex pump delivers smooth, consistent pressure and is rebuildable for extended service life, while the downstream detergent injection system enhances cleaning performance without exposing the pump to concentrated chemicals. Complete with a commercial spray gun, steel lance, high-pressure hose and quick-connect nozzles, the Powerhorse Gas Cold Water Pressure Washer is engineered to provide professional-grade cleaning performance for contractors, farmers, property owners and commercial users.

What's Included

    (1) Powerhorse Gas Cold Water Pressure Washer (4) Quick-connect nozzles: 15°, 25°, 40° and detergent (1) 50ft. x 3/8in. steel braided rubber hose (1) Rear entry spray gun with lance

Downloads

Product Manual
Play Item Video

UNRIVALED CLEANING EFFICIENCY

Engineered to tackle the most challenging cleaning tasks, this pressure washer’s POWERFUL ENGINE and HIGH PSI OUTPUT ensure quick and thorough cleaning, making it ideal for both RESIDENTIAL and COMMERCIAL APPLICATIONS


BUILT FOR THE LONG HAUL

The DURABILITY of the TRIPLEX PUMP, coupled with ceramic-coated plungers, means this machine is designed to withstand rigorous use, ensuring years of dependable service


MOBILITY MEETS STABILITY

Its ANTI-DUMPING DESIGN and pneumatic tires provide SMOOTH TRANSPORTATION over uneven terrain, while the robust cart design offers stability during use, preventing tipping


VERSATILE CLEANING SOLUTIONS

With the inclusion of an ONBOARD SOAP tank and a variety of NOZZLES, this pressure washer adapts to any cleaning situation, from gentle washing to removing ingrained dirt and grime


EXTENDED REACH

The 50 FOOT REINFORCED HOSE offers EXTENSIVE REACH, allowing for EFFICIENT CLEANING over large areas without the need to constantly move the unit, enhancing productivity and ease of use

Features + Benefits

  • 4,400 PSI, 4.2 GPM Cleaning Performance: Combines powerful pressure with high water flow to quickly remove dirt, grime, mildew and other buildup
  • Powerhorse DH420 Gas Engine: 420cc engine delivers dependable power and 23 ft./lbs. gross torque for demanding cleaning applications
  • NorthStar Direct Drive Pump: Triplex pump features ceramic-coated plungers for improved durability and service life
  • Portable Wheeled Design: Pull-up-style cart design includes pneumatic tires, 50ft. braided hose, spray gun with 4ft. lance and (4) quick-connect nozzles
  • Integrated Detergent Tank: Allows convenient application of pressure washer chemicals for enhanced cleaning performance
  • Integrated Safety Features: Includes thermal protection and low oil shutdown
  • EPA and CARB Compliant: For safety and emissions standards

Key Specs

AttributeSpecification

item#

115179

Brand

Powerhorse

Manufacturer's Warranty

2 year limited warranty

Ship Weight

152.0 LB

Pressure

4,400 PSI

Flow

4.2 GPM

Engine Brand

Powerhorse

Engine Model

DH420

Engine Displacement

420 cc

Fuel Type

Gasoline

Pump

Triplex

Drive Style

Direct

CARB Compliant

No

Number of Tips Included

4

Adjustable Pressure

Yes

Gross Torque

23 ft-lbs.

Start Type

Recoil

Engine Oil Included

No
AttributeSpecification

Engine Oil Type

SAE 10W-30

Fuel Capacity

1.72 Gal

Max. Inlet Water Temp

104 °F

Max. Outlet Water Temp

104 °F

Orifice Size

4

Chemical Injector

Yes

Hose Length

50 ft

Coupler Size

3/8 in

Wheel Diameter

12 in

Nozzle Type

15, 25, 40 and Soap

Quick Connect Nozzle

Yes

Pump Oil Included

Yes

Pump Oil Type

SAE 85W-90

Low Oil Shutdown

Yes

Thermal Protector

Yes

Product Weight

159.4000 lb

Dimensions L x W x H (in.)

38.0 x 24.75 x 30.0 in

Reviews

Questions & Answers

51 Reviews This action will navigate to reviews.

Questions

1–10 of 16 Questions  
Sort by:

  1. What kind of oil does it use.for engine

    1 answer

    1. This pressure washer uses SAE 10W-30 engine oil.

      Helpful?

  2. does it have a bypass unloader

    1 answer

    1. The pressure washer will have an unloader valve. It is not recommended to alter the unloader valve's maximum pressure. Excess pressure can cause serious injury to the user and damage the machine. Any alteration other than turning the adjustment knob will void the manufacturer warranty.

      Helpful?

  3. i need a cover for my pressure washer 4400 PSI UNIT

    1 answer

    1. At this time, we do not have a cover that will fit this pressure washer.

      Helpful?

  4. Can you use bleach in this pressure washer?

    1 answer

    1. The chemical injector of this pressure washer is not rated for use with bleach.

      Helpful?

  5. what is the weight of this unit?

    1 answer

    1. This pressure washer weighs 142 lbs.

      Helpful?

  6. How was the 4400 psi determined? Is that working load? Instantaneous load? Max load? What is the working load psi variables with the different nozzles? 

    1 answer

    1. The 4400 PSI pressure rating represents the maximum pressure measured directly at the pump head, before the unloader, under ideal conditions. All included nozzles have the same orifice size, so the pressure (PSI) remains consistent across them; they simply produce different spray angles. This pressure washer comes with 15°, 25°, and 40° fan-pattern nozzles.

      Helpful?

  7. warranty

    1 answer

    1. The pressure washer will come with a 2 year limited warranty for consumer usage or a 90 day limited warranty for commercial usage.

      Helpful?

  8. Where is this machine made?

    1 answer

    1. This Powerhorse pressure washer is manufactured to Northern Tool's specifications in China.

      Helpful?

  9. What size (and thread) is the female port for the downstream injector? I removed the injector to fix the spring/ball, and I misplaced the injector. I would like to just plug it off.

    1 answer

    1. The chemical injector is not a standard NPT thread. It is not recommended to install a plug. The replacement injector kit is part number 806171. Parts are no longer available through Northern Tool. To order, please contact our sister company Jacks Small Engines through the link below. https://jackssmallengines.com/

      Helpful?

  10. DOES THIS MODEL COME WITH An ELECTRIC START OR IS IT JUST RECOIL

    1 answer

    1. This pressure washer is equipped with a recoil (pull) start only and does not offer an electric start option.

      Helpful?

Accessories We Recommend

This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.

See All Motor Oil + Transmission Fluids
Honda Power Equipment 10W-30 Motor Oil, 1-Qt. Bottle
4.9 out of 5 stars. 179 reviews

Honda Power Equipment 10W-30 Motor Oil, 1-Qt. Bottle

Item # 1707002

$12.99
See All Pressure Washer Telescoping Wands
Powerhorse Telescoping Pressure Washer Wand, 6ft.–18ft.L, 4000 PSI, 8 GPM
4.6 out of 5 stars. 117 reviews

Powerhorse Telescoping Pressure Washer Wand, 6ft.–18ft.L, 4000 PSI, 8 GPM

Item # 113826

$169.99
Reg $179.99Save $10.00

Order today to get this price.

Warranty

Manufacturer's Warranty

2 year limited warranty

Extend Your Warranty Coverage with a Northern Protection Plan (NPP)

Repair Plan — 1 Year

A Northern Protection Plan is available after adding the product to your shopping cart.

Recently Viewed Items

This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.

Powerhorse Gas Cold Water Pressure Washer, 4400 PSI, 4.2 GPM
4.5 out of 5 stars. 51 reviews

Powerhorse Gas Cold Water Pressure Washer, 4400 PSI, 4.2 GPM

Item # 115179

$999.99