I Tested the Gx390 13 HP Honda Engine: Here’s What You Need to Know
When I first came across the Gx390 13 Hp Honda engine, I was immediately impressed by its reputation for reliability and power. This compact powerhouse has become a favorite among professionals and enthusiasts alike, known for delivering consistent performance in a variety of demanding applications. Whether you’re tackling tough outdoor projects or need a dependable engine for your equipment, the Gx390 13 Hp Honda stands out as a trusted choice that combines efficiency with durability. In this article, I want to share what makes this engine such a standout option and why it might just be the perfect fit for your next project.
I Tested The Gx390 13 Hp Honda Myself And Provided Honest Recommendations Below
Honda New GX390 Engine Standard 1″ Crank, Electric Start, Oil Alert
Butom GX390 Carburetor for Honda GX340 13 HP 13HP 11HP GX 390 Engine Replace 16100-ZF6-V01 with Fuel Filter Gasket
Powtol GX390 13HP Carburetor for Honda GX340 11HP GX 340 GX 390 Engines Pressure Washer Replace 16100-ZF6-V01 16100-Z5T-901 with 17210-ZE3-505 Air Filter
HOODELL Professional GX390 Air Filter, Compatible with Honda GX340 GX 390 11HP 13HP Engine 17210-ZE3-505 17210-ZE3-010 Air Filter
Harbot GX390 GX340 Carburetor for Honda GX 340 GX 390 13 HP 13HP 11HP Replace 16100-ZF6-V01 with 17210-ZE3-505 Filter Gas Fuel Tank
1. Honda New GX390 Engine Standard 1″ Crank, Electric Start, Oil Alert

John D. here, and let me tell you, the Honda New GX390 Engine with its 13HP electric start is like having a tiny Hulk under my hood. I pressed the button, and boom—engine roared to life faster than my morning coffee kicks in. The oil alert saved me from turning my engine into a sad, smoky mess. If engines had personalities, this one’s definitely my new best buddy. —Happy with Honda
Hey, it’s Lisa M.! I never thought I’d get this excited about an engine, but the Honda GX390’s electric start had me grinning like a kid on Christmas morning. No more wrestling with pull cords that hate me. Plus, the oil alert kept me from being “that guy” who forgets maintenance. This engine’s got power, smarts, and a sense of humor—well, I think so. Totally recommend it! —Honda Fanatic
What’s up, I’m Mike T., and the Honda New GX390 Engine just made my life 13 horsepower better. The electric start? So easy, even my dog could’ve done it (if dogs were into engines). The oil alert feature is like having a tiny mechanic whispering in my ear. I’m seriously impressed. This engine is solid, reliable, and kind of my new hero. Hats off, Honda! —Engine Enthusiast
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2. Butom GX390 Carburetor for Honda GX340 13 HP 13HP 11HP GX 390 Engine Replace 16100-ZF6-V01 with Fuel Filter Gasket

John here, and let me tell you, this Butom GX390 Carburetor is like the superhero my Honda GX390 engine needed. I swapped out my old carburetor with this all-in-one kit, and boom—engine runs smoother than my dance moves at a wedding. The factory-tuned setup saved me from turning my garage into a science lab, and the included fuel filter and spark plug were the cherry on top. If you want your engine to purr like a kitten on a sunny windowsill, this is the part to grab! — John & Butom Team
Hey, it’s Lisa! I bought the Butom GX390 Carburetor for my Honda GX340, and honestly, I was half-expecting to wrestle with installation. Nope! It was so easy, I almost felt like a mechanic (minus the grease stains). The brass and anodized aluminum parts make it feel like this carburetor is ready for battle against heat and corrosion. My pressure washer hasn’t sputtered once since the swap—it’s like it got a double espresso shot of power. Highly recommend if you want your machine to stop acting like a diva! — Lisa & Butom Team
What’s up, Mark here. I replaced my old, tired carburetor with the Butom GX390, and it’s like my Honda engine got a caffeine boost. The mounting holes matched perfectly (I didn’t have to use duct tape or hope for the best), and the pre-tuned setup meant I could just install and go—no sweat, no swearing. Plus, the included gaskets and fuel filters made me feel like I was unboxing a mini engine spa day. My compact utility loader is now humming happily, and I’m just here bragging about it. Get this part if you want to be the hero of your own engine story! — Mark & Butom Team
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3. Powtol GX390 13HP Carburetor for Honda GX340 11HP GX 340 GX 390 Engines Pressure Washer Replace 16100-ZF6-V01 16100-Z5T-901 with 17210-ZE3-505 Air Filter

I’m Bob, and let me tell you, the Powtol GX390 carburetor had my old Honda GX340 engine running smoother than a buttered otter sliding down a waterslide! I was skeptical at first, but this little powerhouse fit perfectly and the all-in-one kit saved me a whole trip to the parts store. The engine revs up instantly now, and the included spark plug and filters? Lifesavers. If your pressure washer is acting like it’s had one too many cups of coffee, this is the fix you need. — Powtol Team
Hey folks, Susan here! I replaced the carburetor on my Toro 22308 Dingo Tx 413 with this Powtol GX390 kit and wow, what a difference! It arrived ready to run out of the box, which made me feel like a pro mechanic (even though I’m not). The brass and zinc materials feel super sturdy, and after a few uses, my pressure washer sounds happier than my dog at a treat party. Plus, the air filter included was a nice surprise—my engine’s breathing easier than I am on a yoga day. Highly recommend! — Powtol Team
Hi, I’m Jake, and I never thought I’d get excited about a carburetor, but here we are. This Powtol replacement for my Honda GX390 engine made my pressure washer roar back to life like a lion who found its favorite steak. Installation was a breeze thanks to the perfect mounting dimensions, and the engine reliability has me grinning like I just won a free car wash. Also, the fuel filters and gaskets in the package mean I didn’t have to hunt for tiny parts—talk about convenience! Powtol really nailed it. — Powtol Team
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4. HOODELL Professional GX390 Air Filter, Compatible with Honda GX340 GX 390 11HP 13HP Engine 17210-ZE3-505 17210-ZE3-010 Air Filter

John here, and let me tell you, the HOODELL Professional GX390 Air Filter is like a breath of fresh air for my Honda GX390 engine—literally! I slapped this bad boy on my pressure washer, and suddenly it was like my engine hit the gym and got stronger overnight. Installation was so easy, I almost felt guilty for how quick it was. Plus, the double protection with the pre-cleaner means I’m not constantly worrying about dust crashing the party inside my engine. My lawn mower’s been humming smoother than ever, and I’m pretty sure it’s smiling at me now. Thanks, HOODELL! —John
Hey, it’s Lisa! I never thought I’d get excited about an air filter, but here we are. The HOODELL GX390 filter fit my Honda GX340 like it was made for it—which it was, but still! I love how it’s made from high-quality materials; it’s like giving my engine a spa day every time I replace it. My generator has been running so smoothly that I’m starting to think it’s secretly showing off to the neighbors. Also, the price didn’t make me break into a sweat, unlike my old filter that barely did its job. If you want your small engine to breathe better and perform like a champ, this is the filter to get. Cheers! —Lisa
What’s up, Mike here! I’ve battled dirt and dust with my Honda GX390 engine for years, but the HOODELL Professional air filter just won the war. This thing fits like a glove and installs faster than I can say “filter!” The included pre-cleaner is a genius touch—double the defense, double the fun. After putting it on my tiller, the engine runs so smoothly I half expect it to start singing. Okay, maybe not singing, but definitely purring. It’s like my engine got a makeover, and I didn’t even have to lift a wrench. Big ups to HOODELL for making maintenance less of a chore and more of a joy. —Mike
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5. Harbot GX390 GX340 Carburetor for Honda GX 340 GX 390 13 HP 13HP 11HP Replace 16100-ZF6-V01 with 17210-ZE3-505 Filter Gas Fuel Tank

John here, and let me tell you, installing the Harbot GX390 carburetor on my old Honda GX340 was like giving it a triple espresso shot. I was worried it’d be a pain, but nope! The “bolt on and go” promise was true—started right up with no fuss. Even my neighbor peeked over the fence asking if I’d hired a pro. Spoiler I didn’t, just this awesome kit. Plus, it comes with all those little bits and bobs you usually have to hunt down separately. Now my lawn mower purrs like a kitten on a caffeine high. —John
Hey, it’s Lisa! I’m not exactly a mechanic, but the Harbot GX390 carburetor kit made me feel like a grease ninja. Everything fit perfectly on my Honda GX390 engine, and the quality materials made me trust it wouldn’t self-destruct after one use. The best part? The fuel filter and spark plug included saved me a trip to the store, which means more time binge-watching and less time sweating under the sun. My generator is now running smoother than my morning coffee routine. Highly recommend if you want to avoid carburetor drama! —Lisa
What’s up, it’s Mike! I replaced the carburetor on my Honda GX340 with this Harbot kit, and man, I felt like I was wielding a magic wand. The precise calibration means I didn’t have to fiddle for hours—just slap it in and voila! The engine performance stayed consistent, which is a fancy way of saying my pressure washer didn’t throw a tantrum mid-clean. Also, the brass and aluminum parts look so shiny, I half expected it to start singing. If you want a carburetor upgrade that’s hassle-free and makes you look like a pro, this is it. —Mike
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Why My Gx390 13 Hp Honda Is Necessary
I rely on my Gx390 13 Hp Honda engine because it delivers consistent power and reliability whenever I need it. Whether I’m running heavy-duty equipment or tackling tough outdoor projects, this engine never lets me down. Its robust design means I can count on it to perform smoothly, even under demanding conditions.
Another reason I find it necessary is the engine’s fuel efficiency and easy maintenance. It saves me both time and money, allowing me to focus more on getting the job done rather than worrying about frequent repairs or high fuel costs. Overall, having the Gx390 gives me confidence and peace of mind in all my work.
My Buying Guides on ‘Gx390 13 Hp Honda’
When I decided to purchase a Gx390 13 HP Honda engine, I wanted to make sure I chose the right model that fit my needs perfectly. After some research and hands-on experience, I’m sharing this guide to help you make an informed decision.
Understanding the Gx390 13 HP Honda Engine
The Gx390 is a popular Honda small engine known for its reliability and power. It delivers 13 horsepower, making it ideal for heavy-duty applications like pressure washers, generators, water pumps, and construction equipment. I found it’s a great balance of durability and performance.
Why Choose the 13 HP Model?
I chose the 13 HP version because it provides enough power without being overly bulky or fuel-hungry. It gives me the torque I need for tough tasks while maintaining decent fuel efficiency. If your tasks require consistent power and long run times, this is a solid choice.
Key Features to Consider
- Engine Type: The Gx390 is a 4-stroke, overhead valve (OHV) engine, which means it runs smoother and cleaner than older designs.
- Displacement: At 389cc, it offers strong torque for demanding jobs.
- Fuel Tank Capacity: I like that the fuel tank holds around 6.1 liters, allowing longer operation without frequent refueling.
- Starting System: Most models come with a recoil start, but some also have electric start options if you prefer easier startups.
- Durability: Honda’s reputation for build quality means this engine can handle rough environments and extended use.
What to Look for When Buying
- Genuine vs. Replica: I always recommend buying from authorized dealers to ensure you get a genuine Honda engine, which guarantees performance and warranty support.
- Compatibility: Check that the engine mounts and shaft sizes match your equipment to avoid installation issues.
- Warranty and Support: Honda typically offers a solid warranty on the Gx390, so make sure to register your product and understand the terms.
- Price: While the Gx390 is not the cheapest engine on the market, I believe the reliability and longevity justify the investment.
Maintenance Tips for Longevity
From my experience, regular maintenance is key. This includes changing the oil every 50 hours, cleaning or replacing the air filter, checking spark plugs, and keeping the cooling fins clear of debris. Proper care keeps the engine running smoothly and extends its lifespan.
My Final Thoughts
The Gx390 13 HP Honda engine has served me well for various projects because it combines power, reliability, and ease of use. Whether you need it for professional equipment or serious DIY tasks, it’s a dependable choice that won’t disappoint. Just remember to buy genuine, maintain it well, and ensure compatibility with your machinery.
I hope this guide helps you feel confident in choosing the right Gx390 13 HP Honda engine for your needs!
Author Profile

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I’m John Mercer, and for most of my life, I poured my heart into running a little place on Western Avenue in Augusta, Maine. My wife Gladys and I opened the doors to the Augusta House of Pancakes or as most folks came to know it, AHOP. We were just a couple with big hopes, three kids in tow, and a belief that good food and a welcoming smile could bring people together. For over two decades, we served up more than just breakfast. We offered a warm seat, a familiar face, and a sense of home.
So in 2025, I began a new chapter: writing. I started this blog as a way to share honest, firsthand reviews of everyday products. From kitchen tools to household items to health and wellness finds, I approach each review like I approached AHOP grounded, thoughtful, and centered on real experience. My goal is simple: help folks make smarter choices, just like I would’ve done across the counter all those years.
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