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About Outbax

We provide your camping and outdoor needs at consistently low prices,
without compromising quality.

At Outbax, our team of 60+ staff are passionate about offering quality products at a low price.

Customer service is the core of our business. We have 24 full-time customer service champions to answer all of your queries and you’ll never be caught unaware with our 60-day money back guarantee.

You can preorder this product. Dispatch: Dec 29th, 2023

Product highlights

Extra 15% off using the code WHITE
Hurry! Promo ends 13/12/23 11:59pm AEDT

  • Key, Remote, and Pull start
  • Runs quietly at 58dB @ 7 metres
  • 8.8L petrol capacity for 4.5 hours (100% load) run time
  • 610 x 415 x 495mm
  • 41.5 kg


Have a question? Ask our experts!

Product Details

The New 2022 Design Gentrax 4.2kW Inverter Generator boasts upgraded features housed in an ultra-portable 48kg unit with wheels and an ergonomic handle.

That's right—less lifting around while camping!

Powerful and parallel-capable

This new generation portable generator has a 4.2kW maximum output and a 3.5kW rated output, ideal for running all your camping appliances from aircon to fridge to lights.

Made with incredible power in mind, this brand-new generator is parallel-capable for increased output. Its dual AC sockets and USB ports allow you to run several appliances simultaneously.

Our most versatile generator yet

  • The generous 8.8L fuel tank gives you an uninterrupted 7 hours of smooth operation at 50% load, great for weekend camping or day trips.
  • You can choose between a key, remote, and pull start mechanism, adding immensely to your convenience.
  • This new generation portable generator comes fitted with an LCD so that you can check your unit's run time in just one glance.
  • It's backed with the Pure Sine Wave output, so even your most sensitive devices are safe to charge with this.

Peace of mind 

This quiet generator for camping comes with a 3-year warranty for an extended lifespan and extra convenience.

The New 2022 Design Gentrax 3.5kW Inverter Generator comes with a maintenance cover and funnel. Still trying to figure it out? Speak to our expert team at 02 888 10 333 now!

Suitable for:

  • Air Conditioners
  • Washing machines
  • Small Fridges
  • Televisions
  • Laptops / Computers
  • Microwaves
  • Power Tools
  • Gaming consoles
  • Water pumps

Need help with choosing the perfect generator for your needs?

Check out our generator buying guide to learn the basic terms and average power requirements for many appliances and use cases.


Perfect for:

  • Camping
  • Construction
  • Back up power
  • Off Grid
  • 60,000+ UNITS SOLD
    60,000+ units sold Australia wide since 2010
  • Winner since 2018. Rated Australia's best generator
  • Full Australian Warranty under Consumer Law
  • Quiet as a mouse

    All GenTrax generators operate at 58 decibels @ 7 metres. This is incredibly quiet – similar to TV playing on low volume.

  • Cleaner, Smoother, More Reliable

    All GenTrax generators use Pure Sine Wave technology, producing cleaner, smoother, quieter, and more reliable electricity.

  • Pass the test

    All of our GenTrax generators are EURO 5 certified, which means they pass the emission standards to be sold in Australia. You’re ensured your generator won’t harm the environment.

  • Weight and Size

    Our smallest GenTrax generator (800W) is 8.5kg and our most popular model, the 3.5kW, is only 28kgs. Equivalent models such as Honda (35kg) and Yamaha (67kg) are much larger.

over 4000+ 5 star reviews

With over 4000+ 5 star reviews across TrustPilot, ProductReview and left on our own website, you can be sure you’re making the right choice for your power needs.



  • Pure Sine Wave Smooth and efficient
  • 4 Stroke 157F engine
  • Low oil/overload protection
  • Super Quiet runs at 58dB
  • ECO mode for greater fuel efficiency
  • Real output claims Trusted engine supplier

After-Warranty-Replacement Guarantee

We are so confident our award-winning generators won't let you down, we're prepared to offer you an after-warranty replacement at any time for just $99! Our aim is to give every customer 100% confidence that they can have a Gentrax generator for life.



  • Meets Euro 5 emissions standards
  • RCM Australian Standards Approved
  • Low oil/overload protection
  • United States EPA Certified
  • Independently tested and authorized for safety and quality for Europe
  • Pure Sine Wave Smooth and efficient

Enjoy extra comforts even while off-grid and easily power an air conditioner or maybe a mini-fridge plus some lights. This portable generator runs quietly at 58dB for up to 8 hours, so you get to use your appliances for long without disturbing your fellow campers.

Need to charge a battery? No worries, it can also get the job done with its 12V 5amp outlet and included battery clips! You won't even need to worry about durability as this has dual Australian-approved, weatherproof 15amp AC outlets coupled with integrated overload protection for easy maintenance!

If you're looking for a quiet generator for camping, this is definitely your best pick. All of our Gentrax inverter generators for sale are EURO 5 certified too, which means they're not harmful to the environment. It's no wonder they've been voted by Product Review as the best generators in the market!

Technical specs


Model: 4000IE
Type: Inverter Generator
AC Voltage: 240V
Frequency: 50Hz
Max. Output: 4.2kw
Rated Output: 3.5kw
Power Factor: 1.0
DC Output: 12V/8.0A 5V/1A/2.1A (Option)
Noise Level: 58dB (7m)
Remote Control Range: 20-30m
Warranty: 3 Years


Type: Air-cooled, 4 cycle, OHV, Petrol Engine
Bore x Stroke: 70 x 58mm
Engine Displacement: 223 cc
Max. Output: 4.2KW / 3800rpm
Fuel: 91 RON
Fuel Tank Capacity: 8.8 litres
Lubricating oil: SAE 10W30
Lubricating oil Capacity: 0.70 litre
Starting System: Recoil + Electrical Starter + Remote Starter
Ignition System: C.D.I.
Spark Plug Type: F7RTC(TORCH)
Rated Continuous Operation: 7.5 hrs


Dimensions: 610 x 415 x 495mm
Weight: 41.5 kg


1 x Generator
1 x Battery Charger Cable
1 x Funnel
1 x Cigarette Lighter Wiring Harness
1 x Spark Plug Socket
1 x Screwdriver
1 x Dust Cover
1 x User Manual 




Is this generator parallel/series capable?
Can this generator run a 1.6kW air conditioner?
Is there a way to shut off the petrol supply so I can run the carborator dry?
Does the DC protector have to be ON at all times?
Can I use a T-plug adapter to connect a cigarette lighter to my generator?
What is an inverter generator and why does it matter?
What is pure sine wave and why does it matter?
What appliances can this generator power?
What type of oil is best for Gentrax inverter generators?
Can I use this generator in a National Park?

Shipping and delivery

  • Your item will be shipped next business day.
  • On average, items are delivered between 3 to 7 business days following shipping around Australia.
  • Check out our shipping and delivery calculator above for more information.
  • We can't ship products to PO Boxes, Parcel Lockers or Post Offices. We need to have an actual address to proceed with the order.


  • Outbax offers a 36-month warranty on the GenTrax Inverter Generator 4.2KW from the date of purchase unless otherwise stated. Outbax warrants its products against defects in materials and/or workmanship. This is further to your rights under Australian Consumer Law.
  • Outbax products come with a 60-day money-back guarantee. You must contact us within 60 days of receiving the product and it must be returned in its original condition.

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