Skip to content
TOUGH JOBS DONE RIGHT: Serious Tools Up to 50% Off. Shop the Deals >
Northern Tool Equipment Logo TextNorthern Tool Equipment Logo text link to Home.

Free Gift Card on All Orders Over $100 See Details

Free Gift Card Details

$100 Order
$10
gift card
$250 Order
$25
gift card
$500 Order
$50
gift card
$1000 Order
$100
gift card
  • The promotion will be automatically applied on the Shopping Cart page.
  • To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
  • Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
  • E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
  • Free e-gift cards expire 10/01/26.
  • Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
  • Valid online and in participating retail stores.
  • Limited-time offer. Subject to change without notice.
Print

NorthStar Hot Water Commercial Pressure Washer Trailer with 2 Wands, 4000 PSI, 7 GPM, Kohler Engine, 525-Gal. Water Tank

Item# 157597
On Sale
NorthStar Hot Water Commercial Pressure Washer Trailer with 2 Wands, 4000 PSI, 7 GPM, Kohler Engine, 525-Gal. Water Tank

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.

NorthStar Hot Water Commercial Pressure Washer Trailer with 2 Wands, 4000 PSI, 7 GPM, Kohler Engine, 525-Gal. Water Tank

Click or Tap image to Zoom

  • Horizontal shaft engines last 5x as long as vertical shaft engines
  • 7 GPM/4,000 PSI from 1 gun OR 3.5 GPM/4,000 PSI from both guns
  • Contact with water or oil will not damage insulation; upon drying the insulation regains its original shape
  • Uses 1/2in. Schedule 80 extra-heavy pipe
  • 525-gal. tank capacity

  • Prop 65 Warning: See Details

See full description

  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Accessories

  • Warranty

  • Compare

Product Summary

This NorthStar Hot Water Pressure Washer Trailer with 2 Wands lets you spray hot water anywhere with no decrease in PSI, even when you use both guns! Commercial-grade 23.5 HP Kohler Command Pro V-Twin horizontal-shaft engine is engineered for long life. Industrial belt drive pump has brass manifold, ceramic plungers and safety relief for long life in extreme conditions. Parker Hannifin Racor fuel filter and water separator prevents burner ignition problems. Diagnostic lights signal operation of key components. Rear hose-entry spray gun with split lance keeps the hose out of the way for easy handling.

This item is not for sale in the state of Alaska or California. Customers are responsible for checking local codes and regulations prior to purchase.
Note: This item is too large for a liftgate. Customer is required to provide a dock or forklift to unload.

What's Included

    (1) Pressure washer (1) Trailer (2) 4ft. lances (15) Quick-couple nozzles

Downloads

Product Manual
Play Item Video

Ultimate Performance

Cleans Faster, Saves Time and Money

Even the toughest grease, grime and oil are no match for this high-performance NorthStar 2-Gun Hot Water Pressure Washer Trailer. With up to 7.0 GPM and 4000 PSI of hot water cleaning power, this powerhouse does what cold water pressure washers can't — blast through the dirtiest, greasiest projects more quickly and easily — great for professionals and serious do-it-yourselfers demanding premium cleaning performance.

Powerful Kohler Command Pro V-Twin Engine

The muscle behind this NorthStar 2-Gun Hot Water Pressure Washer Trailer is a world-class Kohler Command Pro V-Twin engine. With overhead valve technology and high-inertia flywheel, it delivers peak power performance. Plus, a large recoil starter and dual ball bearings provide easier starts.

Superior Quality and Durability

Runs Cooler, Lasts Longer

The belt drive pump used in this NorthStar 2-Gun Hot Water Pressure Washer Trailer absorbs vibration to reduce pump fatigue and turns at a lower RPM to run cooler, resulting in a longer-lasting, smoother-running pump.

Greater Resistance, Longer Life

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

Rugged and Road Ready

We packed all this industrial cleaning power on a 7000-lb. capacity trailer complete with lights, tandem axle and an aluminum truck storage box for organizing tools and chemicals.

Convenience Features

The NorthStar 2-Gun Hot Water Pressure Washer Trailer goes beyond power and performance. You get a variety of convenient features, including two hose reels, diagnostic indicator lights and a Parker Hannifin Raycor™ fuel filter and water separator to prevent burner ignition trouble. Plus, a full complement of accessories is included.

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.

The NorthStar Advantage

Durability and Protection

NorthStar pressure washers are built to last using the highest quality components and materials. To give you extra peace of mind, we stand behind our product with a 2-year limited warranty.

Guaranteed Satisfaction

Shop in complete confidence, knowing 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

  • Horizontal shaft engines last 5x as long as vertical shaft engines
  • 7 GPM/4,000 PSI from 1 gun OR 3.5 GPM/4,000 PSI from both guns
  • Contact with water or oil will not damage insulation; upon drying the insulation regains its original shape
  • Uses 1/2in. Schedule 80 extra-heavy pipe
  • 525-gal. tank capacity
  • Adjustable temperature
  • Pump has brass manifold, ceramic plungers and safety relief
  • Trailer has lights and brakes on both axles
  • Forged brass manifold gives improved strength over cheaper aluminum
  • Easy Start stops pressure buildup during start-up
  • Adjustable pressure for job versatility
  • Sight glass lets you quickly check pump oil
  • Jack and aluminum truck storage box
  • 2 high-pressure hose reels
  • Hose guides allow hoses to unwind from rear or side of trailer
  • 22mm quick connection makes it easy to use multiple attachments
  • 12V DC automotive or marine battery not included

Key Specs

AttributeSpecification

item#

157597

Brand

NorthStar

Manufacturer's Warranty

24 months parts/24months labor

Ship Weight

1950.0 LB

Pressure

4,000 PSI

Flow

7 GPM

Engine Brand

Kohler

Engine Model

Command Pro V-twin

Engine Displacement

725 cc

Fuel Type

Gasoline

Pump

Northstar

Drive Style

Belt

Number of Tips Included

5

Adjustable Pressure

Yes

Gross Torque

38.4 ft-lbs.

Start Type

Electric and Recoil

Engine Oil Included

No
AttributeSpecification

Engine Oil Type

SAE 30 Motor Oil

Fuel Capacity

15 Gal

Max. Inlet Water Temp

140 °F

Max. Outlet Water Temp

200 °F

Orifice Size

3.5

Chemical Injector

Yes

Hose Length

150 ft

Coupler Size

3/8 in

Wheel Diameter

15 in

Nozzle Type

0°, 15°, 25°, 40° and Soap

Quick Connect Nozzle

Yes

Pump Oil Included

Yes

Pump Oil Type

Universal Tractor Transmission

Low Oil Shutdown

Yes

Thermal Protector

Yes

Product Weight

lb

Dimensions L x W x H (in.)

198.0 x 77.75 x 71.5 in

Reviews

Questions & Answers

Questions

1–10 of 53 Questions  
Sort by:

  1. When using just one gun will the GPM always be 7 GPM or can this be adjusted down?

    1. It will always be 7GPM. The only way to get less GPM is to back the unloader off, but by doing this you will also lose pressure.

      Helpful?

    2. The GPM of the NorthStar Pressure Washer will not change when using only one gun. A different set of nozzles is included for this process to provide various spray patterns.

      Helpful?

  2. Is this washer UL approved?

    1. The unit as a whole is not UL approved. Components by themselves are but not as a whole.

      Helpful?

    2. The NorthStar 2-Gun Hot Water Pressure Washer Trailer as a whole is not UL approved. There are some individual components on this unit that are UL approved.

      Helpful?

  3. can the pressure be adjusted

    wanting to be able to adjust the pressure down for washing items that do not require 4000psi

    1. There is a regulator that you can back off to accommodate. But I would suggest purchasing a gauge so you can see what pressure you are setting it to.

      Helpful?

    2. This pressure washer does have an adjustable unload-er valve which will allow the pressure to be adjusted down.

      Helpful?

  4. What State is the NorthStar pressure washer trailer built at?

    Is the trailer made out of tubing steel or angel steel? Thank you!

    1. Minnesota, and the frame is boxed c-channel, very strong

      Helpful?

    2. This pressure washer trailer is built at our NorthStar manufacturing facility in Minnesota. The trailer is made with a combination of square tube and channel steel.

      The fact that we manufacture this unit at our own facility gives us control over the entire process and results in a great fit and finish as well as a top quality pressure washing system.

      Helpful?

  5. how many gallons does it hold? Does it come with hoses and spray guns and all needed hardware? How much assembly is needed?

    1. tank holds 525 gallons, enough to use both guns for a full 8 hour day, all hoses and guns are included, assembly connsists of filling oil in pressure washer (10w30) and pump, and pump (non detergent 30w), we didn't use supplied tag holder because it is plastic, we just screwed ours to the fender, guns must be attached to pole, simple stuff

      Helpful?

    2. This unit is ready to do some serious cleaning. It has a 525 gallon water tank. It includes 2 hose reels each with a 150-ft gray nonmarking hose and it comes with 2 lances. No assembly needed. It ships completely assembled on a flatbed.

      Helpful?

  6. Where can I purchase the water filter assembly 

    1 answer

    1. The fuel filter/water separator is our part #799864. It can be ordered online through our sister company Jacks Small Engines. Please visit www.jackssmallengines.com for pricing and availability.

      Helpful?

  7. I need a manual to rewire a 2011 model 7gpm 4000psi 2 gun 525 gal

    1 answer

    1. Please contact our NorthStar Department at 1.800.270.0810 for assistance.

      Helpful?

  8. what size cap does the water tank need on item#157597-2251 and how long to get one if it is what I need

    1 answer

    1. The water tank would have a 10" cap, part number SNY34700088. You would contact our sister company, Jacks Small Engines for replacement parts. Please visit www.jackssmallengines.com for price and availability.

      Helpful?

  9. Can I purchase a replacement pump, if so, where can the pump be purchased? Are the replacement pumps in stock or is this a special order item?

    1 answer

    1. The replacement pump, part #779536, is available through our sister company, Jacks Small Engines. Please visit www.JacksSmallEngines.com for pricing and availability.

      Helpful?

  10. What's the GVWR?

    1 answer

    1. The trailer GVWR is 7000 lbs.

      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 Water Recovery Filtration Systems
NorthStar Water Recovery Filtration Unit
0.0 out of 5 stars.

NorthStar Water Recovery Filtration Unit

Item # 1579011

$159.99
Reg $299.99Save $140.00

Order today to get this price.

Warranty

Manufacturer's Warranty

24 months parts/24months labor