Pulsar Products GX400BN, 4000W Portable Ultra-Quiet Dual Fuel & Parallel Capability, RV-Ready, Handle & Wheels, with CO
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Availability:
In Stock.
Arrives
Sunday, Oct 4
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Style: 4000 Watts + Dual Fuel + Wheel Kit + RV Ready + CO Shutdown
Features
- 4000 peak watts / 3200 running watts on gas
- 3600 peak watts / 2800 running watts on propane
- High speed 5.5HP 149cc engine, good for emergency home backup power
- Ultra-Quiet, making around 62db at half-load.
- trolley design
Description
Pulsar Products GX400BN, 4000W Portable super-quiet Dual Fuel & Parallel Capability, CO function Inverter Generator, ultra-lightweight and RV Ready, 4000-Watt Gray
Brand: Pulsar
Wattage: 3200 watts
Fuel Type: Gasoline, Liquefied Petroleum Gas
Power Source: Fuel Powered
Recommended Uses For Product: Camping, Residential
Item Weight: 55 pounds
Voltage: 120 volts
Output Wattage: 4000
Special Feature: CO Sensor, Dual Fuel, Low Oil Shutdown, Overload Protection, Short Circuit Protection
Included Components: Inverter Generator
Wattage: 3200 watts
Fuel Type: Gasoline, Liquefied Petroleum Gas
Power Source: Fuel Powered
Recommended Uses For Product: Camping, Residential
Voltage: 120 volts
Output Wattage: 4000
Additional Features: CO Sensor, Dual Fuel, Low Oil Shutdown, Overload Protection, Short Circuit Protection
Engine Type: 4 Stroke
Ignition System Type: Compression
Tank Volume: 1.18 gallons
Engine Displacement: 149 cubic centimeters
Total Power Outlets: 4
Engine Power Maximum: 5 hp
Starting Wattage: 4000 watts
Running Wattage: 3200 watts
Frequency: 60 hertz
Runtime: 6 hours
Color: GRAY
Material Type: Plastic
Brand Name: Pulsar
Included Components: Inverter Generator
Model Name: 4000w Dual Fuel Inverter Generator with Handle & CO Sensor
Model Number: GX400BN
Number of Items: 1
UPC: 814726028176
Manufacturer: PULSAR PRODUCT
Item Type Name: Portable Inverter Generator
Manufacturer Part Number: GX400BN
Warranty Description: 3 year manufacturer
Item Weight: 55 pounds
Item Dimensions L x W x H: 20"L x 12.2"W x 18.9"H
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Oct 4
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Style: 4000 Watts + Dual Fuel + Wheel Kit + RV ...
This is a great little generator. I ordered it a few hours after we lost power in a major storm, and it was delivered the next day. It has enough capacity to handle my sump pump, refrigerator, and freezer, without getting anywhere close to half capacity. That left plenty of power to charge phones and other devices. Because motors and appliances produce power surges when starting up, the manufacturer recommends introducing one load at a time, to distribute the startup load. It is very easy to start (pull start), and runs for about 12 hours on a tank of gas at my load level. It comes with wheels and a pull bar to roll smoothly across flat surfaces. It is light enough to carry (about 50 pounds). It ran for 48 hours non-stop (other than during fuel refills, which must be done with the generator stopped and cooled down to avoid a potential fire), and got us through the rest of our power outage. Makes sure you have enough long heavy-duty outdoor extension cords to reach your devices (12 or 14 gauge), and I highly recommend a heavy duty power splitter so that you can plug multiple extension cords into one generator power outlet (it has two 20-amp outlets, and a 30-amp outlet). Please note that they say this device "ultra quiet" 62db, but note that this is at half load. We were using much less than a half load, but I certainly would call it ultra quiet. It wasn't as noisy are our neighbors' larger generators on either side of us, but it was not "ultra quiet". The generator does have an "ECO" mode which switches it to a reduced RPM mode, which is supposed to be quieter. I did not get a chance to try that yet, as I was more concerned with making sure I had enough capacity whenever one of the devices kicked in and needed more power. All-in-all, this turned out to be the perfect size for our needs, and got us through what would have been a much tougher power outage without a generator!
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Reviewed in the United States on August 16, 2026 by jleejapan
Style: 4000 Watts + Dual Fuel + Wheel Kit + RV ...
I had a WEN Gen Duel Fuel i4000w and Loved it. I became ill and was not able to lift it. #1 PUT REGULAR OIL IN IT. THEN MAKE SURE YOU RUN UNIT 30-40 MINUTES with medium load and idle !! CHANGE THE OIL !! Then Run unit again 30-40 minutes half to medium load. THEN CHANGE ( Look for Metal Flakes in oil ) if good drain and refill with the oil of choice( I like Valovine Motorcycle synthetic 10-30. If Flakes still visible Run as many times as necessary to remove all flakes ( average 3-4 times ) This Eliminates head aches and major problems down the road or off road. I used this Pulsar 4000 for a 34’ rv dual AC, two refrigerators 120 & 12v this unit WILL run one AC 15,000 btu’s 1690 run watts along with several other appliances. Very Pleased Just Wished It had Push Start. 5- Stars. Quality Workmanship Pull Handle , wheels and easy to MOVE Around , oWeight 60#’s Stores NICELY. REMEMBER PREMIUM FUEL WITH STABILIZER. GREAT COMPACT GENERATOR GREAT VALUE FOR YOUR MONEY. PLENTY OF POWER AND A LOW NOISE LEVEL
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Reviewed in the United States on September 10, 2024 by ECA
Style: 4000 Watts + Dual Fuel + Wheel Kit + RV ...
This unit is amazing. I am so happy for the purchase. Have not been disappointed with Pulsar. They are amazing!!!! Upgraded to a 4000 from a 2000. Both I totally recommend....100 percent!!!
Reviewed in the United States on August 27, 2026 by Tom Contos
Style: 4000 Watts + Dual Fuel + Wheel Kit + RV ...
I got this in January 2024, which is when this was still a new unit on the market. When I got it, it was definitely a little flawed and rough around the edges. Correctable things. Once corrected, this has turned out to be a pretty descent generator. I wish they could get this to be CARB compliant again as it cannot be purchased in my region now. Here is the list of things that were wrong with this early batch: 1. Rattling wheels. Can take apart and shim to make the rattle go away. 2. Valve lash clearances way wrong. Had to manually adjust straight out of the box. My understanding from more recent reviews is they fixed this problem. A problem with an early unit. 3. Spark plug. The spark plug in this unit was complete garbage. Totally could not handle propane, in general the crappy material the spark plug was made of quickly corroded in real world use as in an hour or two the material was shot, and the generator with both the valve lash clearance issue and the spark plug issue would idle so rough that the generator would surge and sputter until it got out of whack enough to stall. Changing the spark plug and adjusting the valve lash clearances fixed this. Also re-gapped for propane optimized operation. A descent spark plug works just fine, so why not just start with a good one instead of some cheap Chinese knock-off plug? 4. Even after making these adjustments, the generator still idles a bit rough on propane. Under any load and it sounds fine. All of the digging into this I did came up with in order to get to CARB compliance, they had to lean it out. So, probably why this generator is no longer CARB compliant. But really, it runs and from what I hear many generators idle a little rough when CARB compliant due to running on the lean side. It sounds like the engine on the older model handles running lean a little better than this engine, so this is a regression between the models in this line. This is really a small thing after correcting out the other issues that exacerbated it. 5. Clean electric output. This is an inverter generator with floating a floating (unbonded) neutral. This is not specific to this generator, but instead how all of them are setup and even stand-alone inverters. You need a ground-neutral bond. You can get a cheap plug to bond it. I went as far as making a TT-30 adapter cable to bond it that I then plug my long TT-30 extension cable into. When you look at the electrical output, night and day how much cleaner the output is with this bond. These inverters just need a capacitative reference voltage to stabilize the output and the generator chassis helps a lot with this. It is also a lot safer and more in NEC compliance to have a ground-neutral bond. If you are powering an RV, you probably also want an Earth ground and for backup power to your house, you want to tie into house ground. Even cleaner inverter output, better than the grid with this grounding with a ground-neutral bond in place. Just don't use a suicide plug with hot and neutral as you may harm an electrical worker trying to restore your power. Instead, only hook up generator ground to house ground. If you want to be a little 'lazy' about it, I built a simple adapter cable that has an extra ground wire split off with a lighted plug on the end that only has ground hooked up so I can hook generator ground to house ground by simply plugging into the extension cord running into my house from the generator and then plugging into a wall outlet to only hook up ground. The plug going into the house outlet will light up when utility power is back. With this setup, I have plugged my computer UPS into the generator and the UPS sits fine and happy and the computer happily accepts this power. I did a test with some old analogue security camera's floating around and without the ground-neutral bond, they had trouble even turning on and when I did get one to turn on, full of strong harmonic distortion. Just doing the ground neutral bond helped out a lot and adding the house ground, the video was cleaner on generator power than grid power. So yeah, with electronics, you need these things. The equipment is inherently good, just needs to be hooked up right. With issues corrected, both me fixing up my generator and reports I have of newer batches having key issues fixed, I added a star back. For the price this is a good generator. It would be nice if they could work out something to get this generator CARB compliant again. And there are things about this generator that are nicer than the previous 4000W model: 1. This has a nice display that gives you a lot of useful information. The older model does not have this. Really, if you want to see what is going on and get what you need to say track when it is time to do maintenance again, it is so much easier when you can get the information straight off the generator. 2. Outlets on the generator. The older model gives you an old L5-30 plug and a NEMA 5-15. A bit janky. This model gives you a TT-30 (Travel Trailer) plug, something you see at campgrounds, and two NEMA 5-20 plugs. That is just much nicer. And if you go camping, you can alternate between using your extension cord to the power box at the campground and plugging into this generator when the box is not available with the same extension cord. 3. Larger gasoline tank. While I prefer to only use propane, if you do use gasoline, this has twice the fuel tank capacity. The difference between a very short run time and a useful run time. 4. Wheel kit. The older one doesn't have a wheel kit. This generator is light enough to not really need it and the rear isolator feet are too far back and the wheels don't protrude out enough, so the back of the generator drags as you use the wheel kit, plus you need to fix the rattle, but there is technically a wheel kit on the newer generator. 5. Reports I have seen suggest the newer model is slightly quieter than the older model.
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Reviewed in the United States on January 14, 2024 by BatteryKing
Style: 4000 Watts + Dual Fuel + Wheel Kit + RV ...
Very quiet and efficient. Great buy for our rv.
Reviewed in the United States on August 26, 2026 by Kris Meagher
Style: 4000 Watts + Dual Fuel + Wheel Kit + RV ...
I absolutely love this geni. I live and travel in my van so this is one of my main sources for power. It works great and is not loud at all. Would highly recommend.
Reviewed in the United States on May 22, 2025 by Crystal
Style: 4000 Watts + Dual Fuel + Wheel Kit + RV ...
Probably a good generator but beware the pull start bezel. I grabbed hold and gave it a tug, sliced my finger nail in half on try that sharp edge. Be careful or apply some tape over the edges.
Reviewed in the United States on June 21, 2026 by Andrew J. Cunningham
Style: 4000 Watts + Dual Fuel + Wheel Kit + RV ...
So far so good. Haven't tried the RV AC yet as it is still in the break in period but it runs on propane, is relatively easy to lift (55lbs ish), and fairly easy to use. Shipping was great and item is in perfect condition.
Reviewed in the United States on May 31, 2026 by Alex R