Written by 12:11 am Pressure Washers, Product Guides

The Ultimate Guide to the Magnum 4000 Pressure Washer

magnum 4000 pressure washer

If you’re looking to buy a pressure washer that is reliable, powerful, and easy to use, the Magnum 4000 Pressure Washer is an excellent choice. These pressure washers are made by a renowned cleaning industry specialist, Nilfisk, based in Denmark. The company designs, manufactures, and sells various products, from vacuum cleaners and floor sweepers to industrial scrubbers and pressure washers. Their Magnum 4000 lineup is specifically designed and built for the US market.

These pressure washers are industrial & commercial grade, meaning they are meant for heavy-duty jobs and may not be an ideal choice for personal household use. For home use, read our review of one of the best pressure washers available in market, the Active 2.0 by Active Products. Magnum 4000 lineup offers the most reliable pressure washers under the 4000 PSI pressure washer category. If you are in the cleaning industry, run your own pressure-washing business, or are just a pressure-washing enthusiast, then you can count on the Magnum 4000 to get the job done.

Magnum 4000 Pressure Washer Lineup

The Magnum 4000 lineup contains 2 different variants based on the type of drive and pressure capacity.

4000 PSI VS 4200 PSI Models

The Magnum 4000 line of pressure washers offers two models: the 4000 PSI and the 4200 PSI. Both models are powerful enough to tackle tough jobs and are designed to be used in residential, commercial, and industrial settings. These machines are powered by a Honda GX390 OHV engine and produce 4 gallons per minute of water flow.

They are ideal for medium to large cleaning jobs, such as decks, patios, driveways, and storefronts, and also for cleaning heavy-duty surfaces, such as industrial equipment and machinery. They have a 50-foot high-pressure hose, gun/lance assembly, and quick-connect nozzles for various cleaning applications.

Direct drive VS Belt drive

Magnum 4000 lineup also offers two more types: direct drive and belt drive. Each type has advantages and disadvantages, so it’s important to understand the differences before purchasing. Direct drive pressure washers are more compact and lightweight, which makes them easier to move and store. They are also relatively low-maintenance since they don’t have any belts or pulleys that could break.

On the downside, they tend to be less powerful than belt drive models, so they may not be suitable for heavier-duty tasks. Belt drive pressure washers, on the other hand, are more powerful. However, they are also heavier and more expensive than direct-drive models. Ultimately, the choice between direct drive and belt drive pressure washers depends on your needs and budget.

Direct and belt drive models both have 4000 PSI and 4200 PSI options.

Magnum 4000 pressure washers are diesel fired hot water pressure washers.

These pressure washers use diesel fuel to heat water to high temperatures, allowing for fast, effective cleaning of large surfaces. The heated water is then forced out of the nozzle at high pressure, removing dirt, grime, and other materials from the surface. 

Hot water pressure washing is a powerful and efficient way to clean surfaces. The advantages of hot water pressure washing include the following:

– It effectively removes stubborn grime, grease, and other contaminants from surfaces.

– Hot water pressure washing is faster and more efficient than traditional cleaning methods, saving time and money.

– The high pressure of the hot water can reach cracks and crevices that traditional cleaning methods can’t reach.

– Hot water pressure washing is also more sanitary than traditional cleaning methods, as the high heat kills bacteria and germs.

These pressure washers utilize gasoline to power the engine and diesel fuel for the water heater.

Technical Breakdown

Here is a technical breakdown of magnum 4000 pressure washer:

magnum 4000 pressure washer

Features of Magnum 4000 Pressure Washers

Powerful engine

The magnum 4000 pressure washers are powered by a 4-stroke Honda GX390 engine capable of delivering a net power of 11.7 hp. This allows it to handle the toughest cleaning jobs with ease.

Long Hose

All models come with high pressure 50 feet hose equipped with durable stainless steel quick-connect nozzles


5 color-coded quick-connect spray nozzles and one long-range chemical shooter nozzle are provided. These nozzles help you to adjust the water spraying pressure, angle, and flow.

Robust build

The pressure washer’s frame is made of stainless steel roll cage frames with a lifetime warranty. Stainless steel is strong and lightweight, while the roll cage frame provides a stable structure and compact design. 


All models come with dual rupture discs to prevent high temperature and pressure damage

Adjustable pressure

You can easily adjust the pressure output of the washer using the included regulator. This lets you customize the washer to your specific cleaning needs.

Heavy-duty burner

All units have a Beckett 12-volt DC commercial-grade oil burner Burner is capable of putting out a whopping heat at 245,000 to 770,000 BTU/hr.

Adjustable temperature

These units come with a burner control box equipped with an adjustable thermostat to control the temperature of ejected water.

Vibration protection

The engines of pressure washers are the most significant source of vibration. To protect against vibrations caused by the engine, these models are equipped with anti-vibration isolators.

Large fuel tank

All magnum 4000 units are pre-fitted with a large 8-gallon HDPE diesel fuel tanks. HDPE plastic is extremely safe for use with gasoline and other flammable liquids.


All units have 12-inch flat-free tires for maximum portability

Easy to use

The pressure washer has an easy-to-understand manual that makes it simple to set up and use.


The Magnum 4000 Pressure Washers are a great choice for anyone who needs a powerful and reliable pressure washer. With its powerful 11.7 HP engine and 4000 psi of pressure, this pressure washer is perfect for tackling tough jobs. The heavy-duty frame and construction make it durable and reliable, while the heavy-duty hose is resistant to kinks and abrasions. The easy-to-use controls make it simple to adjust the pressure, and the onboard detergent tank makes it easy to apply soap or other cleaning agents.

Overall, the Magnum 4000 pressure washer by Nilfisk is a reliable, powerful, and versatile tool well-suited for residential and commercial cleaning tasks. Its high-quality components and user-friendly design make it a top choice for anyone needing a heavy-duty machine under the 4000 PSI hot pressure washer category.

Check out the official Nilfisk website here.

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