Factory Direct
4000 Watt Gasoline Generator Supply
Our generators are developed to professional standards and we dedicate their durability rather than reducing costs. Our unique selling point in terms of the product is the use of 100% copper wire alternator. Thus your emergency power generator does not get too hot when worked. This gasoline powered backup generator has a high efficiency and consistent power output when supplemented by our industrial-quality OHV 4-stroke engine.
Advantages of 4000 Watt Gasoline Generator
We produce the Pegaso 4000 watt gasoline generator to give good performance in demanding environments. Considering the competition of consumer products, our products are on industrial grade components, which offer long life and stability to both construction site generators and residential backup.
100% Copper Winding Alternator
Copper has better electrical conductivity and dissipation of heat. This gives rise to the gas powered backup generator which still gives its best performance even in the case of a long run-time and this gives the machine a lot longer life than with aluminium alternatives.
High-Efficiency OHV Engine
Our PG series is based on a strong OHV 4-stroke engine. This is an air-cooled system that has a high fuel efficiency with low emissions. The overhead valve design enables the gasoline engine generator to operate at a colder and cleaner temperature, which gives the higher torque.
- 1-Cylinder, 4-Stroke, Air-Cooled
- Reliable Cold Starts down to -30°C
Outlet Construction and Safety Accreditation
In each unit we produce we put safety and world standards first. Our generators have the necessary protection systems such as Low Oil Auto-Shutdown, Overload protection to switch a portable generator safely during emergencies.
100% Safety
100% Copper Alternator vs. Aluminum
The trick to trustworthy power begins within the casing. We are also a professional manufacturer and we have been in the business over 13 years, and we do not cut corners. A lot of low-cost suppliers manufacture them with aluminium, which works to reduce the price, yet we also use 100% copper wire in all PEGASO generators.
Conductivity
Copper is a superior conductor which is the additional 10% efficiency.
Heat Mgmt
Operates at lower temperatures and thus withstands failures and minimises life span compared to aluminium.
Durability
Built for Strong implies that it could have years of life without power decrease, which was what has been observed with some inexpensive models.
We manufacture them to conserve your brand with clean, more than sufficient energy.
PEGASO 4kW Gasoline Generators
We engineer our 4000 watt gasoline generator line to meet the rigorous demands of both construction sites and residential backup needs. The OHV 4-stroke engine with a high efficiency giving consistent performance at load. You can get the same level of durability which is industrial grade.
4kW 4000W Inverter Generator
Lightweight (less than 60dB). Daily sine wave power that is safe in vulnerable electronics such as laptops and phones.
Portable 4000 Watt Gasoline Generator
Small fit suitcase with a comfortable ergonomic handle. Fits well in camping and tailgating. 2200W Peak Power.
4000W Parallel Inverter Generator
Place two units on them to increase your power to 4000W. Ideal in terms of running RV air conditioners.
4000W Open Frame Generator
Constructed to be used at job sites and other harsh conditions where noisy conditions are less of a concern.
4000W Dual Fuel Generator
Runs on Gasoline or LPG. Increased run-time and less polluting emissions. Very best with eco-friendly users.
OEM 4000W Gasoline Generator
Your brand, your color. Complete adjustability of voltage and design. Concept to mass production process in 20 days.
Need a specific configuration? Contact our engineering team.
Comparison of 4000W Gasoline Generator Models
| Model | Type | Rated/Peak Watts | Noise (dBA@7m) | Weight | THD (Clean Power) |
|---|---|---|---|---|---|
| 4000W Inverter Generator | Inverter | 3800W / 4000W | <60 dBA | ~30 kg | <3% (Safe for Electronics) |
| 4000W Open Frame | Standard | 4000W / 4500W | ~68 dBA | ~40 kg | Standard AVR |
| 4kW Dual Fuel | Hybrid | 3500W (LPG) / 4000W (LPG) | <60 dBA | ~35 kg | <3% |
4.0kW Gasoline Generator Data Table
The technical breakdown of our range of 4.0kW to 4.5kW is available below. Before exiting our production facility, we ensure that all our units are of high ISO9001 standard.
| Feature | Specification |
|---|---|
| Rated Output | 4000 Watts (4kW) |
| Max Surge Output | 4500 Watts |
| Engine Type | 4-Stroke OHV, Air-Cooled |
| Alternator | 100% Copper Brushless (1,000+ hrs) |
| Voltage Regulation | Smart AVR / Inverter (<2.5% T.H.D.) |
| Noise Level | <65dB @ 7m (Silent Operation) |
| Starting System | Recoil / Electric Start (Optional) |
| Certifications | CE, UL, EPA, ISO 9001 |
Voltage/Freq
110-240V | 50/60Hz Custom Configurable
Inlet/Outlet
NEMA, Schuko, BS, AU Standards
Cold Start
Reliable Operation down to -30°C
Key Features and Benefits Gasoline Generator 4000W.
Ergonomic Suitcase Handle
The grip is comfortable and built in to evenly distribute weight to be easy to lift and carry.
Low Oil Alerts
Sensitive sensor stops the machine and does not allow seizing the engine once the oil drops appear.
Space-Saving Design
Small size occupies small space, thus suitable to RVs, trunks of cars, or even very small storage.
Clean Power (Inverter)
THD of less than 2.5% is safe with microprocessors, drones and smartphones.
Smart Economy Mode(Inverter)
Our models have a smarter inverter which is engine speed controlled to fit the electrical demand. The engine also does not operate at peak RPM all the time, but it should throttle down when the demand is low.
Parallel Capability(Inverter)
A 2000W unit can be connected to another to achieve 4000W of power- sufficient power to drive heavy RV loads.
Designed 4KVA Gasoline Generator in All Situations
RV Ready & Camping
Ideal for powering 13,500 BTU ACs. Functions with a noise level of less than 65 dBA at the campsites. The benefit of pure Sine Wave is that it is safe on delicate electronics, such as laptop, and drone battery.
Home Backup
Stable power supply to necessities such as fridges, pumps and Wi-Fi. Our 4-Stroke OHV Engine has a carburetor that is good at cold starting in the winter storms.
Mobile Business
100% Copper Winding Alternator will last longer with heavy loads. There is the Smart Eco-Mode that saves up to 50 percent of fuel, thereby reducing operation expenses of food trucks.
Construction Tools
our motor "BUILD FOR STRONG" which is in strong frame engineering. Low THD Power safe charging battery tools such as battery circular saws and battery drills.
Extreme Generator Quality Inspection
PEGASO zero-defects inspection is performed on all those generators that leave PEGASO.
IQC (Incoming Quality Control)
Engine blocks and carbs are test -checked prior to assembling them.
On-Line Testing
Automated assembly voltage/frequency calibration.
Aging Test
Random samples operate at full load during 16 hours in order to cheque stability.
OQC (Outgoing Quality Control)
Ultimate cosmetic and performance cheque, and accessory package.
Generator R&D & Design Capabilities
It is not a simple affair of bolting parts together because we are designing, developing and production of 1 -20KW portable generators with years of experience.
Structural Design
Premium frames and improved ventilation, easy handles.
Aesthetic ODM
Exclusive shape of the fuel tank, customised panels, unusual colours to suit your brand.
Performance Tuning
Tweaking of carburetors to be used in high-altitude markets, cold-start optimization to colder climates.
Advanced R&D Lab
Precision Engineering
Prototype Assembly
OEM/ODM & Private Label Services
We provide complete OEM/ODM- logo on canopy, panel or packaging with a precise customization
| Branding | Logo on canopy and control panel as well as packaging. |
| Power Specs | 50Hz or 60Hz, 110V up to 480V options |
| Advanced Features | ATS, paralleling systems, remote control@30m |
| Packaging | Strong carton box or solid wooden cases |
| Design | Individual colours to suit brand name |
Certifications & Quality Assurance
Certifications are important when choosing a manufacturer of a generator. PEGASO is equipped with all significant international certifications and 3rd-party factory audits.
Pricing & MOQ
Wholesale Factory Price
Direct factory, volume-based, factory price.
- • Small orders: Starting at 20 units
- • Medium orders: 1×40'HQ container loads
- • Large orders: Custom bulk pricing
Need a Sample?
Low MOQ for testing quality.
Shipping & Delivery
Lead Time: 25 to 35 days from order confirmation.
Ports: Chongqing, Shanghai, or Ningbo.
Packaging:Good quality carton box. There are bulk wooden crates.
Join PEGASO as a Strategic Distributor
Cooperate with a good manufacturer of generators and we all grow together with YOU. One of the advantages of being part of our network is that you will receive special prices, priority production, and complete support of your supply chain as opposed to high-volume buyers and importers.
Exclusive VIP Benefits
- ● Flexible Terms: No inflexible contracts, switch to 30 - 90 days in case you are a long time partner; cash flow remains fluent.
- ● Priority Access:You get to by-pass the whole queue and have first choice over our stuff, 24/7 crew service, geese, and quicker production assignments--you are first.
- ● Complete Customization:We go all the way with ODM game - custom colours, custom logos, custom packaging, even custom designs to your specifications.
One-Stop Supply Chain
- ● End-to-End Logistics: factory to your front door. Shipment, Docs, and Tracking of 100+ countries.
- ● Cost Efficiency: Elegant customization helps to save up to 20% of tariffs and avoid unforeseen expenses- really valuable to you.
- ● Local Currency Payment: Pay local currency in USD limitless and rate riskless.
How to Import Generator from China
1. Inquiry & Quotation
Send us your specifications through the response form. Get a detailed quote.
2. PI & Deposit
Cheque the Proforma Invoice and place the order on a deposit.
3. Production & Inspection
Options Planning manufacturing, QC, third-party inspection.
4. Balance & Shipment
End of payment and export documents with safe delivery.
Frequently Asked Questions
Your questions, answered. Find quick solutions and technical details about our generator products and services.
What appliances can a 4000 watt gasoline generator run?
A 4000 watt gasoline generator is a versatile middleweight unit ideal for both residential backup and job sites. It has a good amount of capacity to run a few vital appliances within the household or power tools that are heavy-duty at the same time.
Common loads include:
- Home Essentials: Refrigerator/freezer, sump pump, microwave and lighting circuits.
- Climate Control: Window air conditioner (up to 13,500 BTU) or portable space heaters.
- Tools at the Workplace: Electric drills, circular saws and small air compressors.
In the nearest case that your power needs are slightly less, a similar power-to-weight ratio can be found in our our 3500 watt gasoline generator that will supply more weight when needed.
The alternator: What is the best lifespan of the copper and aluminium alternators?
Our PG series have been intensely produced using a 100 percent copper wire alternator. The electrical resistance of copper is very low when compared to aluminium, and this does not produce a lot of heat that would be generated by aluminium when conducting electricity.
- **Heat Resistance**: copper conductors do not get hot as they carry intensive loads, which causes insulation to break down.
- **Durability**: The Aluminium windings are liable to brittle nature and when exposed to thermal expansion, they tend to break.
- **Performance**: A copper alternator not only provides smoother amperage, but also offers more years of service to the small gasoline genset than an aluminium one.
What is the difference between starting watts and running watts?
This difference is essential when it comes to determining how much an emergency power supply is necessary.
- **Motor Starting Watts (Surge Watts)**: This is additional communication of starting electric motors (such as in a fridge or AC unit) over a few seconds. Normally the starting AMP will be double or triple.
- **Running Watts (Rated Watts)**: This is the amount of power that the generator will be generating once it has been started. As an example, one unit may be rated by a continuous load of 3500 running watts, but which requires that 4000W buffer to start a tool.
Does this generator work with delicate electronics such as laptops?
We have a generator with AVR voltage regulator (Automatic Voltage Regulator) yes. This system always controls and maintains the voltage output to a safe level (usually +-5%). This eliminates the spikes and surges of power and it is safe to charge and power mobiles, laptops and operate ordinary televisions during a power outage.
Related Power Solutions
Get Your Instant Quote in 30 Minutes
Contact us now for a fast response. Let's make your power solution simple.