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Kohler® Series Steam Boss 4000

Product Summary

AMP® Kohler® Steam Boss 4000 Hot Water/Steam pressure washer sprays hot water and steam up to 250°F @ 4 GPM and 3000 PSI. Coil assembly is fully encased in a custom-molded ceramic fiber refractory combustion chamber with low thermal conductivity and resistance to thermal shock. Rear hose-entry spray gun with split lance keeps the hose out of the way for easy handling. Includes a long-lasting, non-marking steel-braided rubber hose.

What’s Included

  • (1) Hot water pressure washer

  • (1) Quick connect industrial rear entry gun

  • (1) 36in. lance with nozzle quick connector

  • (1) 50ft. gray non-marking quick connect hose

  • (1) 5-pk. quick connect nozzles

  • (1) Quick connect steam nozzle

  • (1) Chemical injector

Ultimate Performance

Cleans Faster, Saves Time and Money

Even the toughest grease, grime and oil are no match for this high-performance AMP® Kohler Steam Boss 4000 Wet Steam/Hot Water Pressure Washer. With up to 4.0 GPM and 3000 PSI of hot water and wet steam, this model 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 Engine

Never worry about your AMP® Kohler Pressure Washer being ready for the task at hand. The commercial-grade Kohler sh265 engine provides the ultimate reliability, plus easy-start convenience, improved power, greater fuel efficiency, longer run time and quieter operation.

Superior Quality and Durability

Proven Reliability

Equipped with a high-quality triplex pump, this AMP®Kohler Pressure Washer delivers field-proven dependability. The pump’s direct drive design requires fewer moving parts, minimizing maintenance and maximizing value.

Greater Resistance, Longer Life

The big difference is in the small details. The pump used in this high-performance AMP® Kohler Pressure Washer is designed with top of the line ceramic plungers to provide maximum resistance to corrosion and abrasion, helping to extend pump life.

Durable, Easy to Push, Minimal in Vibration

All of it adds up to a cart worthy of the AMP® Kohler high-performance Pressure Washer. The premium cart with large 14in. pneumatic tires is easy to maneuver from job to job, saving time and effort. A rugged 1 1/4in. steel full roll cage provides maximum protection, an essential feature for withstanding the hard knocks of job sites. We took it a step further, engineering a unique vibration isolation system to help protect the pump and engine from excessive wear.


Proven Quality

Unrivaled Testing

No one builds pressure washers better. And no one tests pressure washers more. AMP® put each Steam Boss pressure washer component through a series of extensive, real-world procedures in our Round Rock, TX 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 10 Years

For over two decades, AMP® has set the standard for quality, performance and reliability. Contractors, professionals and do-it-yourselfers trust the superior quality of AMP® to get the job done right the first time, every time.

Features + Benefits

  • Kohler SH265 6.5 Hp Engine

  • Tripe Pump With Ceramic Plungers

  • Forged Brass Manifold

  • Chemical Injector With Soap Measuring Valve

  • LP or NP Gas Powered

  • Rugged Steel Frame

  • 50 ft High Pressure Hose


Key Specs

  • Item# - AKHWPW3000

  • Manufacturer’s Warranty - 1 year 

  • Kohler Engine Warranty - 2 year Limited

  • Ship Weight - 180.0 lbs

  • Pressure (PSI) - 4000

  • Flow (GPM) - 2.5

  • Engine - Kohler

  • Fuel Type - Gasoline

  • Engine Displacement (cc) - 196

  • Pump - AMP® Triplex

  • Drive - Direct

  • Heating Element - Propane

  • Hose - 50 ft. gray high-pressure

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