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4000 PSI Pressure Washers

4000 PSI pressure washers from Mi-T-M for demanding industrial and fleet cleaning. Hot-water diesel models from 3.5 to 4.5 GPM cut through grease, oil, and baked-on grime.

Original price $3,540.00 - Original price $3,540.00
Original price
$3,540.00
$3,540.00 - $3,540.00
Current price $3,540.00

Mi-T-M CBA-4004-1MAK Aluminum Belt Drive Pressure Washer – 4000 PSI, 3.4 GPM, Kohler

Mi-T-M
In stock

Mi-T-M CBA-4004-1MAK — Belt-Drive 4000 PSI with Kohler CH440 and AR Pump The CBA-4004-1MAK delivers 4,000 PSI at 3.4 GPM through an AR pump belt-dr...

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Original price $3,540.00 - Original price $3,540.00
Original price
$3,540.00
$3,540.00 - $3,540.00
Current price $3,540.00

4000 PSI Pressure Washers for Concrete and Heavy Contracting

What 4000 PSI Actually Cleans

The 4000 PSI band is where pressure washers stop being yard tools and start being commercial equipment. Concrete sidewalks, parking lots, loading docks, and graffiti come off in a single pass at the right GPM and tip combination. Sealed concrete and stamped surfaces need the 0-degree or 15-degree tip; broom-finished concrete and brick respond better to 25 degrees with a surface cleaner attachment. Below 4000 PSI the same job often needs two or three passes plus chemical, which is the productivity gap that justifies stepping up.

Pump and Engine Pairings to Verify

At 4000 PSI most builds run a Honda GX390 or Kohler Command CH395 paired with a triplex AR or Cat pump rated 4 GPM. Check that the pump is sized to the engine: a 4 GPM pump on a smaller engine will choke and shorten service life under sustained load. Belt drive and direct drive both work at this tier; belt drive runs cooler, lasts longer, and is the right pick for crews running 20-plus hours per week. Direct drive is lighter and cheaper to acquire, which suits part-time and seasonal use.

Related: Gas Pressure Washers · Commercial Pressure Washers · 3500 PSI Pressure Washers · 5000 PSI Pressure Washers · Pressure Washers for Concrete Cleaning

Surface Cleaners Are Not Optional at 4000 PSI

A surface cleaner attachment cuts cleaning time on flat concrete by roughly 60 percent compared with the wand alone. The dual rotating jets distribute pressure evenly across a 15 to 24 inch path, which prevents the zebra striping that hand-wanding produces on parking lots and sidewalks. Match the surface cleaner GPM rating to the unit. A 4 GPM unit running a 4 GPM surface cleaner gives full coverage; a 4 GPM unit running a 5 GPM surface cleaner will lose pressure and leave streaks. Add a soft brush attachment for building exteriors and stamped concrete to avoid etching.

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