Skip to content
4TH OF JULY SALE: Save Up to 40% for Americas 250th Shop Now >
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 11/01/26.
  • 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

Powerhorse Gas Hot Water Pressure Washer with Diesel Heater, 4000 PSI, 4 GPM, Senci Engine

Item# 6398849
Powerhorse Gas Hot Water Pressure Washer with Diesel Heater, 4000 PSI, 4 GPM, Senci Engine

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 Hot Water Pressure Washer with Diesel Heater, 4000 PSI, 4 GPM, Senci Engine

Click or Tap image to Zoom

$2999.99

  • Shipping: 

    Free shipping (lower 48 states) - Available now

    Heavy/large item. Lift gate service available.

  • Store Pickup: 

    Not Available
  • Heavy-Duty Cleaning Power: Powerful 4,000 PSI and 4 GPM output delivers commercial-duty cleaning performance
  • Hot Water Performance: Diesel-powered burner heats water up to 212°F for faster grease and grime removal
  • Adjustable Heat Control: Adjustable thermostat allows water temperature settings from 100°–212°F
  • Reliable Engine Performance: Dependable 459cc Senci gasoline engine with electric and recoil start capability
  • Commercial-Grade Pump: Triplex pump with ceramic-coated plungers for durability and long service life

See full description

  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Warranty

  • Compare

Product Summary

The Powerhorse Gas Hot Water Pressure Washer with Diesel Heater delivers powerful hot water cleaning performance for tackling grease, oil, mud and heavy grime up to 2x faster than cold water systems. Powered by a dependable 459cc Senci engine and producing 4,000 PSI @ 4 GPM, this unit is built for demanding agricultural, home and property maintenance applications. The diesel-powered vertical heater rapidly heats water up to 212°F for maximum cleaning effectiveness, while the durable triplex pump, adjustable thermostat and heavy-duty steel frame provide long-lasting performance in tough working environments.

What's Included

    (1) Powerhorse Hot Water Pressure Washer with Senci Engine (1) Lance (1) Spray gun (5) Quick-connect nozzles (1) 49.2ft. dual-layer hose (1) Spark plug wrench

Downloads

Product Manual
Safety Data Sheet
Play Item Video

Features + Benefits

  • Heavy-Duty Cleaning Power: Powerful 4,000 PSI and 4 GPM output delivers commercial-duty cleaning performance
  • Hot Water Performance: Diesel-powered burner heats water up to 212°F for faster grease and grime removal
  • Adjustable Heat Control: Adjustable thermostat allows water temperature settings from 100°–212°F
  • Reliable Engine Performance: Dependable 459cc Senci gasoline engine with electric and recoil start capability
  • Commercial-Grade Pump: Triplex pump with ceramic-coated plungers for durability and long service life
  • Extended Pump Life: Belt-drive pump system helps reduce vibration and wear
  • Heavy-Duty Construction: Rugged stainless steel and powder-coated steel frame built for demanding use
  • Built-In Safety Protections: Features low-oil shutdown, water shortage protection, flame detection monitoring, thermal overload protection and a trigger safety lock
  • Portable Design: Pneumatic tires and cart-style frame improve mobility around jobsites
  • Complete Accessory Package: Includes 49.2ft. dual-layer high-pressure hose, spray gun, lance and 5 quick-connect nozzles

Key Specs

AttributeSpecification

item#

6398849

Brand

Powerhorse

Manufacturer's Warranty

3 year limited warranty

Ship Weight

407.0 LB

Pressure

4,000 PSI

Flow

4 GPM

Engine Brand

Senci

Engine Model

SV460

Engine Displacement

459 cc

Fuel Type

Gasoline

Pump

Triplex pump with relief valve and ceramic sprayed surface plunger

Drive Style

Belt

Number of Tips Included

4

Adjustable Pressure

Yes
AttributeSpecification

Start Type

Electric and Recoil

Engine Oil Included

No

Engine Oil Type

10w-30

Fuel Capacity

1.85 Gal

Chemical Injector

No

Hose Length

49.2 ft

Nozzle Type

0° 15°, 25°, 40° and Soap

Quick Connect Nozzle

Yes

Pump Oil Included

Yes

Pump Oil Type

Yes (15w-30)

Low Oil Shutdown

Yes

Thermal Protector

No

Product Weight

392.4000 lb

Dimensions L x W x H (in.)

36.8 x 40.0 x 33.4 in

Reviews

Questions & Answers

6 Reviews This action will navigate to reviews.

Questions

1–10 of 16 Questions  
Sort by:

  1. I’m looking for the parts diagram. Those pages are missing from the manual .  I need the oil pump for 6398849

    1 answer

    1. The oil pump, part #PH6398849.H12, can be purchased through our sister company, Jacks Small Engines. Please visit www.JacksSmallEngines.com for pricing and availability.

      Helpful?

  2. Is the burn temp control in Celsius or Fahrenheit?

    1 answer

    1. The original version of this pressure washer used a temperature control calibrated in Celsius. However, a later revision changed the control to Fahrenheit.

      Helpful?

  3. DOES THIS HAVE AN HOUR METER ON IT ?

    1 answer

    1. This pressure washer is not equipped with an hour meter.

      Helpful?

  4. Can this machine suck up chemical and dispense it through the wand?

    1 answer

    1. This machine is equipped with a chemical injector to dispense detergent through the wand.

      Helpful?

  5. Is this electric start or pull start?

    1 answer

    1. This pressure washer features an electric starter with a recoil (pull-start) backup.

      Helpful?

  6. What kind of packaging is this item shipped in

    1 answer

    1. The item is shipped on its own pallet and enclosed in a large cardboard box. It is secured on all four sides with plastic straps and wrapped in plastic for added protection.

      Helpful?

  7. What is the warranty? Online says 3 yr, the Manual says 1 yr

    1 answer

    1. This pressure washer is backed by a 3-year limited warranty for residential use. When used in a commercial or professional setting, the limited warranty coverage is 1 year.

      Helpful?

  8. Does this have an unloader valve/ if not can one be added?

    1 answer

    1. This machine is equipped with an unloader valve that regulates the pressure.

      Helpful?

  9. Is this only hot water or can it be used as cold water too?

    1 answer

    1. This pressure washer can operate without the burner running.

      Helpful?

  10. Does it have a soap dispenser hosr

    1 answer

    1. This pressure washer does not include a hose for the chemical injector.

      Helpful?

Warranty

Manufacturer's Warranty

3 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 Hot Water Pressure Washer with Diesel Heater, 4000 PSI, 4 GPM, Senci Engine
3.0 out of 5 stars. 6 reviews

Powerhorse Gas Hot Water Pressure Washer with Diesel Heater, 4000 PSI, 4 GPM, Senci Engine

Item # 6398849

$2999.99