Alkota SG Diesel Series
Alkota 557S – Technical Specifications
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Flow Rate: 5 GPM (gallons per minute)
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Pressure: 5000 PSI (pounds per square inch)
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Drive Type: Belt-Driven System
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Engine Type: Kohler KDW1003 Diesel Engine with Electric Start
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Pump Style: Oil Bath Crankcase | Triplex Ceramic Plunger
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Wand Type: Trigger-Style Wand
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Hose Length: 50 ft Industrial Pressure Hose
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Hose Diameter: ⅜ inch
Unit Dimensions & Weight
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Length: 37 in
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Width: 39 in
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Height: 41 in
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Weight: 725 lbs
Alkota 557S – Portable Diesel-Powered Cold Water Pressure Washer
If you're searching for a portable cold water pressure washer that delivers power, performance, and long-lasting reliability, look no further than the Alkota 557S. Designed for industrial pressure washing but versatile enough for a range of cleaning applications, this diesel-powered cold water pressure washer is engineered for professionals who demand consistent results.
Built for Industrial Strength and Portability
The Alkota 557S combines a durable belt-driven pump system with a diesel engine for dependable cleaning power. Its heavy-duty welded roll cage frame and integrated lifting hook make it easy to transport and ideal for tough job sites. The quiet operation and low vibration system ensure smoother performance and a longer equipment life.
Why Choose the Alkota 557S Cold Water Pressure Washer?
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Powered by a diesel engine – built for heavy-duty, off-grid, and remote use
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Belt-driven pump system – delivers consistent pressure with minimal wear
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Welded roll cage frame with lifting hook – rugged, job site-ready design
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Portable and reliable – perfect for industrial, commercial, and agricultural applications
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Proven track record – the S Series has been an industry leader for years
Included FREE with Every Unit:
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50 ft industrial pressure hose with swivel end and bend restrictor
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Professional-grade insulated trigger gun with safety lock
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Insulated wand for safe handling and extended use
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Quick-connect nozzles for easy spray changes
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Winterizing valve – protects your system in freezing conditions
With the Alkota 557S, you're getting one of the best portable cold water pressure washers on the market—engineered for performance, built to last.
Diesel engine drive • Electric Start • Belt drive tri-plex pump • 50 ft Hose • Trigger gun and Wand • Flat Free wheels • 15, 25 & 40 Degree nozzles • Group 24 Battery Required on All Models
The Kohler engine control module (ECM) is an electronic control unit that manages the engine’s performance. It monitors various sensors and adjusts fuel injection, ignition timing, and other critical engine functions to optimize fuel efficiency and reduce emissions.
Kubota DSE Module Auto Start/Stop Controller Monitors engine speed, oil pressure, coolant temperature, voltage and current. The modules will give comprehensive engine and alternator protection. This will be indicated on the largest back-lit LCD icon display in its class via an array of warning, electrical trip and shutdown alarms.
| MODEL | PERFORMANCE | ENGINE | WT. |
| 537S | 5.0 GPM / 3500 PSI | Kohler KDW1003 Diesel (Electric) with ECM | 725 |
| 557S | 5.0 GPM / 5000 PSI | Kohler KDW1003 Diesel (Electric) with ECM | 725 |
| 837S | 8.0 GPM / 3000 PSI | Kohler KDW1003 Diesel (Electric) with ECM | 750 |
| 787AC | 7.0 GPM / 8500 PSI | V2403 Kubota Diesel Engine (Electric) with DSE | 925 |
| 337S | 3.4 GPM / 3000 PSI | Kohler KD440 Diesel (Electric) | 435 |
| Pneumatic Wheels in place of Flat-Free |
| Downstream Detergent Injector Assembly (3 to 5 GPM only) |
