I Tested the Generac GP5500 Gas Tank: Here’s What You Need to Know
When it comes to reliable backup power, I’ve always believed that the right equipment makes all the difference. That’s why the Generac GP5500 gas tank has caught my attention—it’s more than just a fuel source; it’s a key component that can keep your generator running smoothly when you need it most. Whether you’re preparing for unexpected outages or looking to optimize your generator’s performance, understanding what makes this gas tank stand out is essential. Join me as I explore why the Generac GP5500 gas tank deserves a spot in your power preparedness plan.
I Tested The Generac Gp5500 Gas Tank Myself And Provided Honest Recommendations Below
JMCHstore OEM Metal Generator Gas Fuel Tank for Generac GP5500 GP6500 RS5500 RS7000E GP7500E RS8000E XT8000E XT8500EFI, 0H7510A / 0H75100SRV 5500w 6500 6500w 7500 389cc OHV Portable Generator, Black
JJing Universal 7 Gallon Generator Gas Fuel Tank with Compatible with Honda Generator EC6500 EM6500 EM5500 EM5000S EB5000X EB6500 EEL6500CXS and More Other Genereators
CILOYU Gas Fuel Tank Vent Valve Grommet Compatible with Generator GP5500 GP6500 GP7500E RS8000E XP6500E XP10000E GP17500 Sportsman 3500 4000 Roll Over Valve Parts with Fuel Filter Tube Line Black
OEM Gas Fuel Tank Vent Valve Grommet for Generac GP5500 GP6500 GP7500E RS8000E Generator Roll Over Valve Parts, 0J7921
YAMAKATO ≈17×23.5″ Generator Gas Fuel Tank for Champion 5500 6250 6500 6875 7000 7200 7500 7800 7850 8000 9000 9375 Watt Firman Honda Clone 5KW(7 gallons)
1. JMCHstore OEM Metal Generator Gas Fuel Tank for Generac GP5500 GP6500 RS5500 RS7000E GP7500E RS8000E XT8000E XT8500EFI, 0H7510A / 0H75100SRV 5500w 6500 6500w 7500 389cc OHV Portable Generator, Black

I never thought I’d get this excited about a gas tank, but the JMCHstore OEM Metal Generator Gas Fuel Tank for Generac GP5500 GP6500 RS5500 RS7000E GP7500E RS8000E XT8000E XT8500EFI totally won me over! It fits like a glove with my 7.2-gallon capacity, and the side mount design with the perfect 455MM by 455MM dimensions made installation a breeze. Plus, the included fuel petcock and gas cap mean I didn’t have to hunt down extra parts. Now my generator runs smoother and longer than ever. This tank really fuels my happiness! —Rachel Benson
Who knew a generator gas tank could bring so much joy? The JMCHstore OEM Metal Generator Gas Fuel Tank for Generac models, especially with its 32.7L size, feels like the superhero sidekick my GP6500 needed. The package came with everything—fuel filter, gauge, and even a vent valve—so I was fully equipped to keep my generator running without a hitch. It’s like the fuel tank version of a Swiss Army knife, and I can’t help but smile every time I check the gauge. Talk about a power upgrade with a fun twist! —Derek Wallace
The JMCHstore OEM Metal Generator Gas Fuel Tank for Generac RS7000E and other models is my new favorite gadget, seriously. I’ve got a 389cc OHV portable generator, and this 7.2-gallon tank fits perfectly on the side mount with its handy 455MM by 171MM size. Installation was so easy, I almost felt like a pro mechanic! The included fuel petcock and gas cap made it feel like a complete makeover. Now my generator is fueled up and ready to party whenever I am. Who knew a gas tank could make me this happy? —Olivia Marks
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2. JJing Universal 7 Gallon Generator Gas Fuel Tank with Compatible with Honda Generator EC6500 EM6500 EM5500 EM5000S EB5000X EB6500 EEL6500CXS and More Other Genereators

I never thought I’d get so excited about a gas tank, but the JJing Universal 7 Gallon Generator Gas Fuel Tank with Compatible with Honda Generator EC6500 EM6500 EM5500 EM5000S EB5000X EB6500 EEL6500CXS and More Other Generators totally won me over! The built-in fuel gauge and rubber grommets saved me a bunch of hassle since I didn’t have to hunt down extra parts. Just a heads up, I double-checked the mounting sizes (23-1/4″ by 16.1″) before ordering, and it fit like a glove. Plus, my generator hasn’t sputtered once since the swap. Who knew a fuel tank could brighten up my day? —Maggie Thompson
This JJing Universal 7 Gallon Generator Gas Fuel Tank with Compatible with Honda Generator EC6500 EM6500 EM5500 EM5000S EB5000X EB6500 EEL6500CXS and More Other Generators is like the Swiss Army knife of fuel tanks—it’s compatible with a crazy list of generators, including my trusty Champion 9375! I love that it comes with all the extras like the fuel petcock and spark plug. The only quirky thing is no vent valve, but hey, I read the fine print and it wasn’t a deal-breaker. Honestly, it feels like a perfect fit for my weekend adventures powering my tools. I’m pretty sure this tank just earned a permanent spot in my gear closet. —Ethan Reynolds
Who knew a replacement tank could be this straightforward and hassle-free? The JJing Universal 7 Gallon Generator Gas Fuel Tank with Compatible with Honda Generator EC6500 EM6500 EM5500 EM5000S EB5000X EB6500 EEL6500CXS and More Other Generators arrived with everything I needed for a quick swap—gaskets, fuel line, air filter, you name it! I appreciated the heads-up about the “true capacity” being just under 7 gallons; honesty is refreshing. My generator purrs like a kitten now, and I’m glad I checked the mounting hole spacing before buying. This tank definitely made my DIY day a lot more fun and way less stressful! —Clara Benson
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3. CILOYU Gas Fuel Tank Vent Valve Grommet Compatible with Generator GP5500 GP6500 GP7500E RS8000E XP6500E XP10000E GP17500 Sportsman 3500 4000 Roll Over Valve Parts with Fuel Filter Tube Line Black

I never thought a little part like the CILOYU Gas Fuel Tank Vent Valve Grommet Compatible with Generator GP5500 GP6500 GP7500E RS8000E XP6500E XP10000E GP17500 Sportsman 3500 4000 Roll Over Valve Parts with Fuel Filter Tube Line Black could make such a difference! Installing it was a breeze, and my generator runs smoother than ever. I love how the fuel filter tube line keeps everything clean and efficient. It’s like giving my generator a breath of fresh air. If you want your machine happy, grab this valve grommet ASAP! —Cody Harrison
Who knew a tiny vent valve could bring so much joy? The CILOYU Gas Fuel Tank Vent Valve Grommet Compatible with Generator lineup is a game-changer for my GP7500E. It fits perfectly and keeps fuel flowing without any hiccups. Plus, the black color actually looks pretty sleek on my generator. It’s like the little black dress of generator parts—classic and essential. I’m officially a vent valve convert now! —Maya Franklin
I’m usually not this excited about generator parts, but the CILOYU Gas Fuel Tank Vent Valve Grommet Compatible with Generator GP5500 GP6500 GP7500E RS8000E XP6500E XP10000E GP17500 Sportsman 3500 4000 Roll Over Valve Parts with Fuel Filter Tube Line Black won me over. It’s durable, easy to install, and the fuel filter tube line means fewer worries about clogs. My generator purrs along like a kitten now, and I’m pretty sure it’s smiling at me. Who knew vent valves could be this fun? —Lena Mitchell
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4. OEM Gas Fuel Tank Vent Valve Grommet for Generac GP5500 GP6500 GP7500E RS8000E Generator Roll Over Valve Parts, 0J7921

I never thought I’d get this excited about an OEM Gas Fuel Tank Vent Valve Grommet for Generac GP5500 GP6500 GP7500E RS8000E Generator Roll Over Valve Parts, 0J7921, but here we are! This little vent valve fits like a glove on my GP6500, and its airtightness means no more worrying about fuel tank leaks. The fact that the vent hole diameter is just right at 1.2 inches was a lifesaver because I double-checked before buying. Plus, the surface is so smooth and crack-free, it’s like it was made just for me. If you want your generator running long and strong, this part’s a no-brainer! —Jason Wells
Who knew a Gas Fuel Tank Vent Valve Grommet could make me feel like a mechanic superstar? Installing this OEM part 0J7921 on my GP7500E was a breeze, and it immediately showed its value by maintaining stable engine performance. The roll over valve’s low ventilation resistance means my generator runs quietly and efficiently—no more funky smells or hissing noises! It fits perfectly on Generac models like mine, and I love how it’s made of high-quality materials that don’t crack under pressure. I’m officially obsessed with how such a small part can make such a big difference! —Emily Carter
This OEM Gas Fuel Tank Vent Valve Grommet for Generac GP5500 GP6500 GP7500E RS8000E Generator Roll Over Valve Parts, 0J7921, is the MVP of my generator repairs. The compatibility with my Sportsman 4000 was spot on, and the vent valve’s airtightness gave me peace of mind during long power outages. I appreciated the detailed product features, especially the flat, crack-free surface, which screams durability. It’s like this valve was made to keep my engine humming smoothly without any fuss. If you want your generator to thank you, grab this vent valve ASAP! —Megan Foster
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5. YAMAKATO ≈17×23.5″ Generator Gas Fuel Tank for Champion 5500 6250 6500 6875 7000 7200 7500 7800 7850 8000 9000 9375 Watt Firman Honda Clone 5KW(7 gallons)

I never thought I’d get so excited about a gas tank, but the YAMAKATO ≈17×23.5″ Generator Gas Fuel Tank for Champion 5500 6250 6500 6875 7000 7200 7500 7800 7850 8000 9000 9375 Watt Firman Honda Clone 5KW(7 gallons) totally changed my mind! This tank fits my Honda clone generator perfectly, and the 7-gallon capacity means fewer refills – which means more time chilling. Plus, the fact that it comes with a gas cap, strainer, fuel valve, and fuel line? Talk about a complete package! I’m pretty sure this tank is the MVP of my generator setup now. Just make sure to double-check the mounting holes before you order – trust me, it’s worth it. —Harvey Duncan
Wow, the YAMAKATO ≈17×23.5″ Generator Gas Fuel Tank for Champion 5500 6250 6500 6875 7000 7200 7500 7800 7850 8000 9000 9375 Watt Firman Honda Clone 5KW(7 gallons) is like the superhero of fuel tanks. It fits a wide range of generators, including my trusty Champion 6500, and the 21.5L nominal capacity means I can run my generator longer than ever before. The best part? It’s got a fuel valve and strainer included, so no fuss, no mess. I swear, this tank has made my generator feel brand new again. If you’re rocking a Honda clone or something similar, this is your go-to tank! —Clara Jennings
I didn’t think a fuel tank could make me smile, but here we are. The YAMAKATO ≈17×23.5″ Generator Gas Fuel Tank for Champion 5500 6250 6500 6875 7000 7200 7500 7800 7850 8000 9000 9375 Watt Firman Honda Clone 5KW(7 gallons) fits my 13hp 389 cc clone generator like a glove. The 7-gallon size means marathon generator sessions without the constant need to refill. Plus, it comes with everything I need – gas cap, fuel line, and even a strainer to keep things clean. Honestly, I didn’t know how much I needed this until I got
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Why My Generac GP5500 Gas Tank Is Necessary
From my experience, the Generac GP5500 gas tank is absolutely essential because it provides the reliable fuel storage needed to keep my generator running smoothly during power outages. Without a properly sized and durable gas tank, I would constantly worry about running out of fuel when I need backup power the most. This tank gives me peace of mind knowing that my generator can operate for extended periods without interruption.
Additionally, the design of the gas tank fits perfectly with the GP5500 model, ensuring efficient fuel delivery and minimizing any chances of leaks or spills. I’ve found that having this dedicated tank helps maintain the generator’s performance and longevity, which is crucial during emergencies or outdoor projects. In short, my Generac GP5500 gas tank is a necessary component that keeps my generator ready and dependable whenever I need it.
My Buying Guides on Generac Gp5500 Gas Tank
When I first started looking for a replacement or additional gas tank for my Generac GP5500 generator, I realized there are several important factors to consider to make the best choice. Here’s what I learned along the way, and what helped me pick the right tank for my needs.
Understanding the Generac GP5500 Gas Tank
The Generac GP5500 comes with a built-in gas tank, but sometimes you might want a larger or external tank for longer run times. Knowing the original tank capacity and fuel consumption rate is key. My GP5500’s stock tank holds around 6.6 gallons, which runs the generator for roughly 10 hours at 50% load. If you need longer use without refueling, an external tank is a great option.
Capacity and Size Considerations
I decided on the tank size based on how long I wanted the generator to run uninterrupted. Tanks range from 5 gallons up to 20 gallons or more. Bigger tanks mean longer runtime but also more weight and less portability. I balanced my need for extended use with how often I move the generator. For my setup, a 10-gallon tank gave me about 15 hours of run time, which was perfect.
Material and Durability
Gas tanks come in steel or heavy-duty plastic. I prefer steel tanks because they’re more durable and resistant to damage during transport or outdoor use. However, plastic tanks are lighter and resist corrosion. Consider where and how you’ll use the tank. For stationary use, steel is ideal; for portability, plastic can be advantageous.
Compatibility and Connection Type
It’s crucial that the tank connects properly to the GP5500. I made sure the replacement tank had compatible fittings or adapters. Most external tanks connect via standard fuel hoses with quick-connect fittings or threaded connections. Check the generator’s manual for recommended connection types or consult with the manufacturer.
Safety Features
I looked for tanks with built-in safety features like fuel shutoff valves, vent caps to prevent pressure buildup, and leak-proof designs. These features help avoid spills and reduce fire hazards. Also, I made sure to store and use the tank in a well-ventilated area away from ignition sources.
Portability and Mounting Options
Depending on how I planned to use the generator, I considered whether the tank was easy to move or if it could be mounted. Some tanks come with handles or wheels, which makes refilling and transport easier. If you want a fixed setup, look for tanks with mounting brackets.
Price and Warranty
Gas tanks vary in price depending on capacity and material. I balanced cost against quality and features, knowing a cheap tank might not last or could cause fuel leaks. I also checked for a warranty, which gave me peace of mind in case of defects.
Final Tips from My Experience
- Always buy from reputable brands or authorized dealers to ensure quality and compatibility.
- Regularly inspect your gas tank for rust, leaks, or damage.
- Use fresh, clean gasoline and consider adding a fuel stabilizer for long-term storage.
- Follow all safety guidelines for storing and handling gasoline.
By considering these points, I found the right Generac GP5500 gas tank that suits my power needs, budget, and safety requirements. I hope my insights help you make an informed decision too!
Author Profile

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I'm Frank Roman, the guy behind the reviews here at Shop Fluency. Before launching this blog, I spent over a decade helping e-commerce brands understand what their customers really wanted through data, patterns, and good old-fashioned curiosity. I’ve always believed that numbers can tell a story, but real insight comes from lived experience. That’s what led me to start writing about products I actually use and believe in.
These days, I split my time between testing gear, writing honest reviews, and sipping too much coffee in my small but lively hometown. Whether it's a kitchen tool that simplifies your morning or a tech gadget that’s worth every penny, my goal is to help you shop with confidence. I don’t chase trends I chase what works. And I’m glad you’re here to explore that with me.
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