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Simpson 4000SP 4,000 PSI 3.3 GPM Gas Pressure Washer
Model#: SMPN4000SP
Condition: New

Simpson 4000SP 4,000 PSI 3.3 GPM Gas Pressure Washer

Model#: SMPN4000SP
Out of Stock
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A heavy-duty pressure washer, this unit is for professional or do-it-yourselfers with a lot of surface area that needs constant cleaning. Provides the quickest and cleanest results for extremely large areas and heavily soiled areas. These units will do all of the medium or light-duty jobs PLUS remove oil stains, wash the siding on your house and even remove graffiti!
IMPORTANT: This product is not CARB Compliant and may not be used in the state of California.
  • Powered by a Subaru EX27 Overhead Cam Engine
  • 4,000 PSI and 3.3 GPM
  • Welded steel frame construction for long lasting use
  • Convenient low oil shutdown
  • 13-in premium pneumatic wheels (double sealed) for easy portability and maneuverability
  • 4,000 PSI 3.3 GPM Gas Pressure Washer - 4000SP
  • 3/8-in x 50-ft Steel-Braided High Pressure Hose
  • (5) Quick Connect Nozzles
  • Pro-Style Spray Gun


Flow Rate: 3.3 GPM
High Pressure Hose: 50-ft
Hose Diameter: 3/8-in
Motor: Subaru EX27
Number of Quick Connect Nozzles Included: 5
Operating Pressure: 4,000 PSI
Pump Type: Triplex Plunger
Type: Heavy-Duty
Wheel Size: 13-in
Wheel Type: Pneumatic


Product Reviews


by PowerReviews

(based on 1 review)

Reviewed by 1 customer

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(2 of 2 customers found this review helpful)


Simpson is a quality product

By Charlie

from Huntsville, AL

Verified Buyer


  • No Surprise As Simpson S


    Best Uses

      Simpson manufactures and is recognized for manufacturing a quality product. The unit was delivered on time, packaged & pallet placement resulted in even box being in tact. Unit operated as expected and quality attachments. Had been looking for the unit for a couple of months - an exceptional value for a new pressure washer.

      • Was this a gift?:
      • No

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      Questions & Answers

      Do you have questions about this product?

      get answers from real customers and in-house experts with AnswerBox.

      4 Questions | 3 Answers
      Displaying questions 1-4
      • Q:

        Is the hose 50 inches long or 50 feet long?
        Asked on 9/22/2013 by ConcreteCleaner from Raleigh

        1 answer



          The hose is 50 feet.

          Answered on 9/23/2013 by Ken from Atlanta, GA
      • Q:

        Is the pressure adjustable on this model? Is this a close-out on this model?
        Asked on 9/11/2013 by LMT

        1 answer



          No the pressure is not adjustable.

          Answered on 9/12/2013 by Ken from Atlanta, GA
      • Q:

        What type of Triplex pump is used on this package? Cat, AAA, ect.
        Asked on 9/6/2013 by tkemz from New Orleans, La

        0 answers

      • Q:

        If this unit a 3.3gpm or a 2.4gpm. It states 3.3 in title and 2.4gpm in the description
        Asked on 9/5/2013 by tkemz from New Orleans

        1 answer



          This correct is 3.3 GPM. We are in the process of updating our listing.

          Answered on 9/6/2013 by Ken from Atlanta, GA
      Displaying questions 1-4

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