Case IH 4,200PSI 4.2GPM Cold Water Gas Pressure Washer

Maximum Pressure. Commercial Power. Built to Last.

Featuring a Honda GX390 commercial-grade engine, a professional triplex pump, and a durable powder-coated steel frame, this washer combines raw power with built-in durability for unmatched results in the field or at the shop. With a massive 4,200 PSI and 4.2 GPM flow rate, it’s one of the most effective cold water pressure washers in its class.

This machine is purpose-built for contractors, industrial operations, agricultural equipment maintenance, and facilities management—anywhere pressure, flow, and uptime matter most.

Note: This model is for cold water use only and does not include a detergent injection system.

Key Features

• Max Pressure: 4,200 PSI

• Flow Rate: 4.2 GPM (gallons per minute)

• Engine: Honda GX390 – commercial-grade, fuel-efficient, and built to last

• Pump Type: Triplex – high-efficiency, low maintenance, long lifespan

• Unloader: Built-in – compact and integrated for reliable pressure control

• Soap System: Not included – designed for pressure-only cleaning

• Hose: 50′ steel-braided rubber – kink-resistant, flexible, and abrasion-resistant

• Nozzles: 4 Quick-connect spray tips – 15°, 25°, 40°, and Soaper

• Tires: 10″ flat-free – easy to maneuver across any terrain

• Frame: Heavy-duty powder-coated steel – corrosion-resistant and field-tough

• Fittings: Industry-standard quick connect – for hoses and nozzles

• Weight: 155 lbs

• Warranty: 3-Year limited warranty on Honda GX390 engine

Unmatched Power for Demanding Jobs

With an output of 4,200 PSI and 4.2 GPM, this Case IH pressure washer delivers a combined 17,640 cleaning units, making it an elite tool for:

• Stripping paint and graffiti

• Cleaning heavy machinery and construction equipment

• Degreasing shop floors and mechanical bays

• Washing farm implements and livestock trailers

• Preparing siding, concrete, and steel for refinishing

• Deep-cleaning driveways, patios, and walkways

Its raw pressure and high volume combine to cut through grime faster and more thoroughly than traditional washers, giving you better results in less time—no matter the job.

Honda GX390 Engine – Trusted by Pros

At the core of this powerhouse is the Honda GX390, one of the most respected small engines on the market. Known for exceptional reliability, easy starting, and fuel efficiency, the GX390 is the first choice for professionals who depend on their equipment to start and run every time.

Key engine features:

• OHV (Overhead Valve) design for fuel efficiency and cooler operation

• Precision camshaft for quiet, smooth performance

• Low-oil shutdown to protect the engine

• 3-Year commercial-use warranty

• Recoil start system designed for easy pull with minimal effort

It’s an engine built not only to perform—but to keep performing for years.

Triplex Pump – Built for Continuous Operation

This washer comes equipped with a triplex pump, the gold standard in commercial pressure washer design. With low RPM operation, improved efficiency, and longer life spans, triplex pumps are ideal for extended use and professional cleaning tasks.

Pump advantages include:

• Lower operating temperature compared to axial pumps

• Serviceable components for easy repair and maintenance

• Higher durability under constant, high-pressure use

• Integrated unloader for clean plumbing and pressure management

This pump system helps reduce wear on the engine and extends the overall life of the unit—saving time and cost on repairs down the line.

50-Foot Steel-Braided Rubber Hose

Included with the washer is a 50-foot high-pressure hose, built from steel-braided rubber. This hose is designed to:

• Resist abrasion, punctures, and kinking

• Handle high-pressure flow without expansion or blowouts

• Maintain flexibility in cold or hot weather

• Extend your reach without repositioning the machine frequently

Combined with quick-connect fittings, switching out tools or replacing hoses is fast and secure, getting you back to work with minimal downtime.

Spray Nozzle Versatility

The washer comes with four quick-connect spray nozzles, color-coded and precision-engineered for different cleaning needs:

• 15° (Yellow) – Focused stream for heavy-duty tasks

• 25° (Green) – General cleaning for driveways, decks, and vehicles

• 40° (White) – Wide spray for rinsing and gentle surfaces

• Soap Nozzle (Black) – Low-pressure setting for soap application (if used with an external injector)

These nozzles offer targeted cleaning control, allowing you to tailor the pressure to match the surface and avoid damage during cleaning.

Flat-Free Tires & Heavy-Duty Frame

Maneuvering a heavy-duty pressure washer on rough terrain can be a challenge—unless it’s equipped with 10″ flat-free tires and a rugged steel frame like this one.

• Flat-free tires eliminate downtime caused by punctures

• All-terrain tread makes it easy to move across gravel, grass, dirt, or pavement

• Powder-coated steel frame resists corrosion, impact, and weather exposure

• Low center of gravity enhances stability during operation

Whether you’re transporting it in a truck or rolling it around a job site, this washer is designed for real-world work.

Cold Water-Only Use

This model is a cold-water pressure washer, ideal for tasks that rely on mechanical pressure rather than heat. It's a dependable, powerful option for:

• Outdoor cleaning

• Prep work for painting or sealing

• Equipment washdown

• General industrial sanitation (non-sterile environments)

Note: It does not include a detergent injection system—so if soap is required, a downstream injector or foamer attachment should be used.

The Case IH 4,200 PSI 4.2 GPM Cold Water Gas Pressure Washer is a powerful and reliable tool built to perform at a commercial level. With Honda engineering, triplex pump efficiency, and high-capacity flow, it’s a must-have for professionals who demand results without compromise.

From concrete to equipment, it's your best defense against dirt, grease, and grime.

Get it done. Get it clean. Get it with Case IH.