Stealth Operator Series 8 GPM 4000 PSI Belt-Driven Commercial Pressure Washer Skid – Honda GX690 & General Pump TSF2021 (Electric Start)
Built for relentless performance in the field, this Operator Series 8 GPM, 4000 PSI skid-mounted pressure washer is our best-selling commercial unit — offering pro-grade components and the best price in the industry. Powered by the electric start Honda GX690 V-Twin 4-Stroke OHV engine and paired and features the industry-standard General Pump TSF2021 66 Series Triplex Plunger Pump. This belt-driven powerhouse is engineered for durability, smooth operation, and peak cleaning output.
Designed for long-term, high-output operation, this belt-driven system extends pump life while reducing heat and vibration. The aluminum skid ensures corrosion resistance and strength for tough job site conditions.
Every Stealth pressure washer comes prefilled with oil and includes an oil drain hose for both the engine and pump for easy maintenance. It also features a starter-side muffler (with an optional oil-filter-side configuration upon request).
This pressure washer is ready for action—whether you’re handling fleet washing, soft washing, or heavy-duty commercial power washing
What’s Included:
- Engine + Pump Assembly: Honda GX690 engine with belt-driven General Pump TSF2021
- General Pump YU21405 Unloader: Commercial 21 GPM, 4050 PSI rated unloader for smooth, consistent output
- Mount-Ready Aluminum Skid: Fits trailers, flatbeds, platforms, and shop bays
- Prefilled with Oil: Both engine and pump include oil + oil drain hoses for hassle-free maintenance.
Introducing the Operator Series: Built to Work. Ready to Lead.
The Operator Series is Stealth’s core lineup for professionals who demand powerful performance, long-term reliability, and rugged simplicity. These machines are designed for real-world jobsites—featuring high-flow output, premium engines, and durable builds that are made to run day in and day out. Whether you're expanding your business or upgrading to equipment that can truly keep up, the Operator Series is built to lead from the front.
Operator: The Backbone of Professional Cleaning. From large-scale property maintenance to fleet washing and heavy equipment cleanup, the Operator Series is trusted by contractors who can’t afford downtime. Each unit is built around field-proven components, with belt-drive systems, balanced GPM and PSI, and skid-mounted frames that drop cleanly into trailers, truck beds, or mobile setups. If you need serious pressure with no fluff—just clean, consistent results—the Operator Series delivers
Stealth 8 GPM 4000 PSI Commercial Pressure Washer | Features
- Honda GX690 Engine (Electric Start) – 688cc
- Reliable V-Twin 4-stroke OHV engine for high-performance power washing.
- Comes installed with a starter-side muffler (option to install on oil filter side upon request).
- General Pump TSF2021 66 Series High Flow Triplex Pump (Belt Drive)
- Industry-standard belt-drive triplex plunger pump—known for long life and easy rebuilds.
- Exclusive Lifetime Warranty on the Forged Brass Manifold for unbeatable durability.
- Belt-Driven System
- Reduces heat, vibration, and RPM, extending the pump’s life while lowering maintenance costs.
- Reduces heat, vibration, and RPM, extending the pump’s life while lowering maintenance costs.
- General Pump Trapped Pressure Unloader Valve
- Improves gun operation with reduced pressure loss for smoother performance.
- Universal setup with dual 1/2" NPT-F inlets, 1/2" NPT-F outlet, and dual 1/2" NPT-F bypass ports.
- Temperature-resistant design operates in conditions up to 200°F.
- Handles up to 21 GPM and 4,050 PSI, making it ideal for high-demand applications.
- Adjustable pressure regulation allows for precise system control.
- All-Stainless Steel Hardware
- Corrosion-resistant hardware built to handle tough job site conditions.
- Corrosion-resistant hardware built to handle tough job site conditions.
- Ready-to-Use Convenience
- Comes prefilled with oil for both the engine and pump.
- Includes oil drain hose for easy maintenance.
- Does not include a gas tank OR battery cables.
- Industry-Leading Warranty & Support
- Honda GX690 Engine: 3-Year Warranty.
- General Pump TSF2021 Pump: 5-Year Warranty with Lifetime Manifold Guarantee.
Stealth 8 GPM 4000 PSI Unit | Specifications
| Specification | Details |
| Brand | Stealth |
| Made In | USA |
| Engine | Honda GX690 V-Twin OHV, 4-Stroke (Electric Start) |
| Engine Displacement | 688cc |
| Pump | General Pump TSF2021 (Triplex, Belt-Driven) |
| Pump Max Flow Rate | 8.5 GPM @ 3600 PSI |
| Operational Flow Rate | 8.0 GPM @ 4000 PSI |
| Unloader Valve | General Pump Trapped Pressure Unloader |
| Unloader Rated Pressure | 4050 PSI (Max 4500 PSI) |
| Unloader Max Flow Rate | 21 GPM |
| Skid Material | Aluminum |
| Muffler | Starter-side muffler (can be relocated to oil filter side upon request) |
| Included | Oil & Oil drain hoses |
| Not Included | Gas tank, battery cables |
| Warranty - Engine | 3 Years (Honda GX690) |
| Warranty - Pump | 5 Years (General Pump) + Lifetime Forged Brass Manifold Guarantee |
Stealth 8 GPM Pressure Washer | Owner's Manual
Warranty Information
| Component | Warranty Coverage | Warranty Coverage |
| Honda GX690 Engine | 3 Years | Covers defects in material and workmanship under normal use. Warranty service available through authorized Honda dealers. See More |
| General Pump TSF2021 | 5 Years | Covers defects in material and workmanship. Includes a Lifetime Manifold Warranty on the forged brass manifold. |
Call us for warranty details: 561-964-3228
