If your old generator's stopped working or you just want reliable built-in power, the QG 4000 delivers quiet, dependable performance. It runs your A/C and essentials so you can stay comfortable and enjoy camp without worrying about power.
If your old generator has worn out or you're stepping up to cleaner, more efficient power, this QG 4000 EVAP onboard generator delivers dependable performance for the essentials that make RV life more comfortable. It provides enough output to run one 13,500 BTU air conditioner along with your fridge, outlets, and small appliances, so you can enjoy morning coffee, charged devices, and cool air wherever you park.
If you're replacing a previous Onan QG 4000 the overall layout is very similar. Intake, exhaust, and drain locations generally align with earlier models, so major bay modifications usually aren't required. You'll still need to reconnect the fuel line, electrical wiring, and exhaust components, and minor adjustments may be necessary depending on your RV's setup. As with most onboard generators, working with an experienced installer can help ensure everything is set up correctly the first time. You can use etrailer's installer locator to find a qualified shop near you and get help with install.
After a long drive or when the weather turns wet and rainy, nobody wants to wrestle with a bulky generator. With one-touch start, automatic choke, and remote switching capability, powering up is always simple, rain or shine. All you have to do is press the power button and relax. And the built-in shutoffs handle low oil, overloads, and engine quirks automatically, so you can settle in for the night with your fridge cold, your CPAP on, and no worries about unexpected shutdowns.
This generator uses sound-dampening technology and a special muffler to help keep things peaceful. You won't have to raise your voice for campfire stories, cut conversations short, or lose sleep to engine noise. It also meets National Park Service noise guidelines, so you can experience brilliant fall foliage in the Great Smoky Mountains or glimpse the gold and violet sunset at the Grand Canyon without worrying about generator noise.
From routine oil changes to replacing the air filter, regular service is straightforward. You don't need to be a mechanic - basic tools and standard maintenance intervals are usually all it takes to keep things running reliably for years to come. And with built-in self-diagnostic capability, troubleshooting issues is quicker and easier so you can spend less time tracking down problems and more time enjoying your RV.
For many RV owners, an onboard generator quickly becomes something they rely on every trip. It allows you to manage heat, power appliances, and stay comfortable without planning around hookups. That kind of reliability matters more the longer you own your rig. If you're replacing an older unit, upgrading to more power, or adding an onboard generator for the first time, the QG 4000 supports travel that's less restricted by weather, location, or campground availability. It's an upgrade that continues to pay off over years of use.
California residents: click here
Do you have a question about this Generator?
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.