Model # PW4070

Internet #203243379

Campbell Hausfeld 4,000 psi 3.5 GPM CAT Pump Gas Pressure Washer

Discontinued Campbell Hausfeld

4,000 psi 3.5 GPM CAT Pump Gas Pressure Washer

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Frequently Bought Together

Product Overview

Powerful and reliable commercial grade engine is tough enough for any job. Top of the line pressure washer features CAT pump and Honda GX390 engine (compliant in 50 states). Commercial CAT 67DX pump has solid ceramic plungers and special high pressure seals providing a long-life pump. This heavy duty pressure washer is hard working and long lasting. Ideal for use by contractors, on jobsites, and with cleaning heavy equipment cleaning.

  • Powered by a GX390 Honda engine
  • Features a commercial CAT 67DX pump with solid ceramic plungers
  • Durable steel constructed cart is welded and powder coated
  • Features pneumatic tires for easy mobility
  • Conveniently holds gun with steel lance, spray tips and 50 ft. hose
  • Professional spray gun with steel lance and 5 quick connect spray tips
  • Pump soap from 1 or 5 Gal. container using soap/chemical injector tube
  • Includes 50 ft. high pressure hose, spray gun, steel lance, and 5 quick connect spray tips
  • Commercial grade pressure washer
  • 3-year limited warranty
  • Choose the best nozzle that fits your pressure washer needs:

    Pressure Washer Nozzle Selection Guide

Info & Guides

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Assembled Depth (in.)
34 in
Assembled Height (in.)
30.5 in
Assembled Width (in.)
22 in
Hose Diameter (In.)
3/8 in
Hose length (in.)
Wheel Diameter (in.)
10 in


Assembly Required
CA (CARB) Compliant
CARB Compliant
Connection Type
1/4 in. Universal Quick Connect Wand/Nozzle
Engine Displacement (cc)
Engine Make
Engine Type
Air cooled 4 stroke OHV
Chemical/detergent injection,Foldable handle,Quick connect tips
Fuel Tank Capacity (gallons)
Hose Material
Onboard cord storage,Wheels
Maximum Pressure (PSI)
Nozzle Type
Number of tips included
PSI Range
3200+ PSI
Pressure Washer Power Type
Product Weight (lb.)
Pump Brand
Pump Type
Start Type
Recoil Start
Translucent fuel tank
Water capability

Warranty / Certifications

Manufacturer Warranty
3 Year Limited Warranty

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Customer Questions & Answers

Which model is shipped - two different display pictures

In the images of the product, two different looking models are shown. One is black and one is chrome. Which one will be shipped if purchased?
Asked by: DZ35
The frame/handle area on the PW4070 is black.
Answered by: CampbellHausfeld
Date published: 2015-09-20

Does Engine Oil come included with the washer? Or, do I need to purchase this seperately?

Asked by: Mike
Yes you need to purchase a good quality four cycle motor oil ahead of time. It uses a little less than a quart of 10w-30.. Standard or synthetic, either is fine. I also suggest you get a small funnel..
Answered by: DJM
Date published: 2015-10-06

How fast does the chemical draw from down stream injector

Asked by: Joc11
The chemical should draw up almost immediately if the pressure washer is set up for detergent use and the mix of the detergent is 10:1.
Answered by: CampbellHausfeld
Date published: 2015-12-09

Can you tell us what can be added to determine the exact pressure in PSI coming out of the unit? Also what type of oil and weight should be used?

Asked by: Robert
The PW4070 engine uses 10W30 oil. Mobile One full synthetic is recommended. You would need to add a t-fitting at the outlet of the pump and the hose then put a gauge in the t-fitting to get an exact pressure reading in PSI.
Answered by: CampbellHausfeld
Date published: 2015-09-20
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Customer Reviews

4,000 psi 3.5 GPM CAT Pump Gas Pressure Washer is rated 4.7 out of 5 by 3.
Rated 5 out of 5 by from Was the right choice for my purposes The cat pump promises to be more durable than alternatives. Gave up psi, gpm and price tor this promise. Hope it pays off in the end. So far is very easy to start and use.
Date published: 2012-06-14
Rated 4 out of 5 by from great product Product is great. The durability seems good. Have only had it for about 3 months but the material is good quality. I am happy about the purchase.
Date published: 2014-02-11
Rated 5 out of 5 by from powerful pressure washer Simple to assemble and set up. Must remember to purchase engine oil ahead of time !! Extremely powerful and useful. Does exactly what it was bought for.
Date published: 2015-07-21
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