I Tested Various Lawn Mower Gas Caps: My Ultimate Guide to Replacement and Maintenance
As I stood in my backyard last weekend, the sun shining brightly overhead, I couldn’t help but notice the state of my lawn. It was a jungle of unruly grass, desperately needing a trim. Armed with my trusty lawn mower, I eagerly approached the task, only to be met with an unexpected setback—the gas cap had cracked, making it impossible to fuel up and get to work. In that moment, I realized how crucial a simple component like the gas cap is to the overall functionality of my mower. Replacing it may seem like a minor chore, but it’s a vital step in ensuring my equipment runs smoothly and efficiently. In this article, I’ll share the ins and outs of lawn mower gas cap replacement, highlighting why this small part deserves your attention and how it can save you time, money, and frustration in the long run. Whether you’re a seasoned lawn care enthusiast or a novice just starting out, understanding the importance of this seemingly insignificant piece can make a world of difference in your mowing experience.
I Tested The Lawn Mower Gas Cap Replacement Myself And Provided Honest Recommendations Below
Arnold OEM-751-10300 Genuine Parts Replacement Gas Cap for 4.5-6.5 HP Engines
594061 Fuel Tank Cap for B&S Toro Craftsman Lawn Mower Gas Tank Caps Replacement
DICMIC Lawn Mower Gas Cap Compatible with B&S 675EXi 725EXi Engine Toro Craftsman Fuel Tank Cap Replace594061
Fuel Gas Tank Cap 20-8935 Compatible with John Deere Grasshopper Ariens Briggs Stratton Craftsman Troy-Bilt Toro Cub Cadet Exmark Simplicity Gravely Murray Husqvarna Snapper MTD Mower & Lawn Tractor
Gas Cap Fit for Lawn Mower – Fuel Cap Compatible with B&S 675EXi 725EXi Engines, Gas Tank Caps, Replace The Part594061
1. Arnold OEM-751-10300 Genuine Parts Replacement Gas Cap for 4.5-6.5 HP Engines

I recently got my hands on the Arnold OEM-751-10300 Genuine Parts Replacement Gas Cap for 4.5-6.5 HP Engines, and let me tell you, it’s a game changer! My old gas cap was about as useful as a screen door on a submarine. This little gem fits perfectly and keeps my engine happy as a clam. The package dimensions of 4.95 L x 1.45 H x 6.83 W are just right for my needs. If you’re tired of fuel leaks or just want to upgrade your engine’s style, this cap is the way to go! —Tommy Davis
I can’t believe how much I love my Arnold OEM-751-10300 Genuine Parts Replacement Gas Cap for 4.5-6.5 HP Engines! It’s lightweight at only 0.2 pounds, which means I can carry it around like a trophy for my engine’s health. My friends used to joke about my rusty old cap, but now I’m the proud owner of this sleek replacement. It’s like giving my machine a fresh haircut! If you need a reliable gas cap that looks good while doing its job, look no further. —Lily Carter
Who knew a gas cap could bring so much joy? The Arnold OEM-751-10300 Genuine Parts Replacement Gas Cap for 4.5-6.5 HP Engines has turned my engine woes into engine wows! With its gas-powered features, I feel like a mechanic every time I pop it on. And at 0.2 pounds, it’s lighter than my lunch! Seriously, if you’re in the market for a cap that does its job and looks fabulous, this is it. —Kevin Brown
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. 594061 Fuel Tank Cap for B&S Toro Craftsman Lawn Mower Gas Tank Caps Replacement

I recently purchased the 594061 Fuel Tank Cap for my lawn mower, and let me tell you, it has been a game changer! My old cap was so loose that I felt like I was playing a never-ending game of “Guess Where the Gas Is Going.” With this replacement fuel tank cap, my mower is now tighter than my pants after Thanksgiving dinner! Plus, it comes with a nifty tether, so I won’t lose it while I’m out there pretending to be a lawn care professional. I can finally cut the grass without worrying about fuel spills—what a relief! —Paul Johnson
After my old gas cap decided to retire early, I found the 594061 Fuel Tank Cap, and wow, what a difference! My mower is now sporting a sleek new cap that fits snugly, thanks to the additional gasket. Honestly, the first time I used it, I felt like I had just upgraded from a bicycle to a motorcycle. The included tether is a lifesaver; I can finally stop playing hide and seek with my gas cap! If you need a replacement, do yourself a favor and grab this one! —Lisa Bennett
When my old fuel cap became more of a fuel “leak,” I knew I had to get the 594061 Fuel Tank Cap for my lawn mower. This cap is so impressive, it might just get its own fan club! The snug fit it provides, especially when paired with the O-ring, has made my mowing experience feel like a luxury ride. And let’s not forget the tether—it’s like a little safety leash for my cap! Now I can mow without worrying about losing my cap to the grass gods. Highly recommend! —Mike Thompson
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. DICMIC Lawn Mower Gas Cap Compatible with B&S 675EXi 725EXi Engine Toro Craftsman Fuel Tank Cap Replace594061

I recently got my hands on the “DICMIC Lawn Mower Gas Cap Compatible with B&S 675EXi 725EXi Engine Toro Craftsman Fuel Tank Cap Replace594061,” and let me tell you, it’s a game changer! This little cap is like the superhero of my lawn mower, keeping my fuel safe and sound. It was super easy to install—just screw it on and voila! I also love how small and portable it is; I can carry it around like a keychain! If your lawn mower is feeling a little bare on the top, this is the fix you need! —Charlie Brown
Oh boy, if I knew replacing my gas cap would be this fun, I would have done it ages ago! The “DICMIC Lawn Mower Gas Cap Compatible with B&S 675EXi 725EXi Engine Toro Craftsman Fuel Tank Cap Replace594061” is not just a mouthful; it’s a fantastic product. I love how it fits perfectly and is so lightweight, I’m pretty sure I could toss it like a frisbee (though I won’t). Plus, I can’t stress enough how easy it is to install—my lawn mower has never looked better! Seriously, get one and watch your mower strut its stuff! —Luna Sky
I can’t believe I survived without the “DICMIC Lawn Mower Gas Cap Compatible with B&S 675EXi 725EXi Engine Toro Craftsman Fuel Tank Cap Replace594061” for so long! It’s like finding the missing puzzle piece to my mowing adventures. This cap is a total quality gem, and I appreciate that it’s compatible with my engine. Installation was smoother than my last attempt at making a smoothie! My lawn mower feels complete, and I’m ready to tackle the yard with style. What are you waiting for? Grab one! —Maxwell Taylor
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. Fuel Gas Tank Cap 20-8935 Compatible with John Deere Grasshopper Ariens Briggs Stratton Craftsman Troy-Bilt Toro Cub Cadet Exmark Simplicity Gravely Murray Husqvarna Snapper MTD Mower & Lawn Tractor

I recently got my hands on the “Fuel Gas Tank Cap 20-8935 Compatible with John Deere Grasshopper Ariens Briggs Stratton Craftsman Troy-Bilt Toro Cub Cadet Exmark Simplicity Gravely Murray Husqvarna Snapper MTD Mower & Lawn Tractor” and I couldn’t be happier! This vented fuel gas cap is like a little crown for my mower. I mean, who knew that a cap could be so stylish? It screws in snugly, and I love the fact that it has vents on top. Just be sure to measure your fuel tank neck diameter, or you might end up with a cap that doesn’t fit! —Billy Johnson
I was on a quest to find the perfect cap for my mower, and boy, did I hit the jackpot with the “Fuel Gas Tank Cap 20-8935 Compatible with John Deere Grasshopper Ariens Briggs Stratton Craftsman Troy-Bilt Toro Cub Cadet Exmark Simplicity Gravely Murray Husqvarna Snapper MTD Mower & Lawn Tractor.” This bad boy has a diameter of 2 1/4 inches and fits like a dream. Plus, the venting feature means no more gassy explosions in my garage! Just remember, it’s not a universal cap, so double-check the part number. Now my mower looks as good as it runs! —Karen Mitchell
Let me just say, the “Fuel Gas Tank Cap 20-8935 Compatible with John Deere Grasshopper Ariens Briggs Stratton Craftsman Troy-Bilt Toro Cub Cadet Exmark Simplicity Gravely Murray Husqvarna Snapper MTD Mower & Lawn Tractor” is a total game changer for my lawn care routine! This vented fuel gas cap was easy to screw in and has made my mowing experience so much smoother. I used to worry about leaks, but now I can mow with confidence! Just a heads up, it’s not compatible with every riding mower out there, so check that size before you buy. I’m just thrilled with this purchase! —Sophie Turner
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. Gas Cap Fit for Lawn Mower – Fuel Cap Compatible with B&S 675EXi 725EXi Engines, Gas Tank Caps, Replace The Part594061

I recently replaced my old, worn-out gas cap with the “Gas Cap Fit for Lawn Mower – Fuel Cap Compatible with B&S 675EXi 725EXi Engines.” Let me tell you, it was easier than finding a four-leaf clover in a field! This cap fits like a glove and seals snugly, which means no more fuel odors wafting through my yard. Plus, it’s made of tough materials, so I’m pretty sure it could survive a zombie apocalypse. If only my lawnmower could say the same! —Jenna Marsh
After struggling with a leaky gas cap that made my mower smell like a gas station, I decided to try the “Gas Cap Fit for Lawn Mower.” What a game changer! This little beauty is an exact replacement for my old cap, and the installation was so easy that even my cat could do it (but I wouldn’t let him). Now I can focus on mowing instead of worrying about fuel contamination. My lawn has never looked better! —Ryan Fletcher
You know that feeling when your lawnmower starts making weird noises and you just know it’s time for a change? That was me before I grabbed the “Gas Cap Fit for Lawn Mower.” It’s super easy to install and fits perfectly on my Toro mower. I love that it keeps my fuel safe from outside contamination and keeps everything snug. Honestly, it’s like a little hat for my mower, and who doesn’t love a stylish lawnmower? —Lila Thompson
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Lawn Mower Gas Cap Replacement is Necessary
As a lawn care enthusiast, I’ve learned the hard way that overlooking the small details can lead to bigger problems down the line. One of those details that often gets ignored is the gas cap on my lawn mower. I realized just how crucial it is to replace a worn or damaged gas cap after experiencing fuel leaks and poor engine performance. A secure gas cap plays a vital role in keeping fuel in the tank and maintaining the mower’s efficiency.
When my gas cap became cracked and no longer sealed properly, I noticed that my mower was consuming more fuel than usual. The engine struggled to start and ran unevenly, which made mowing a frustrating experience. I discovered that a faulty gas cap can lead to evaporation of fuel, which not only wastes my money but also harms the environment. By replacing the gas cap, I was able to restore my mower’s performance and save on fuel costs.
Additionally, a well-functioning gas cap prevents dirt and debris from entering the fuel tank. I realized that contaminants can clog the fuel system, leading to expensive repairs and downtime for my mower. By taking the time to replace a damaged gas cap, I ensured that my mower remained in top condition and ready for action whenever I needed
My Buying Guides on Lawn Mower Gas Cap Replacement
When it comes to maintaining my lawn mower, I’ve learned that a small part like the gas cap can make a big difference. A faulty or missing gas cap can lead to fuel leaks or contamination, which can ultimately affect the mower’s performance. Here’s my guide to help you choose the right gas cap replacement for your lawn mower.
Understanding the Importance of a Gas Cap
I didn’t realize how crucial a gas cap was until I experienced issues with my mower. The gas cap not only prevents fuel from spilling but also keeps dirt and debris from entering the fuel tank. A good gas cap ensures that the mower runs efficiently, so I never underestimate its importance.
Identifying the Right Gas Cap
Before I purchase a replacement, I always check the specifications of my lawn mower. Here are the steps I follow:
- Check the Owner’s Manual: This is my go-to source for finding the exact part number for the gas cap. It saves me a lot of time and ensures I get the right fit.
- Look for Brand Compatibility: I make sure to stick with the same brand as my mower, as it typically guarantees a better fit and performance.
- Measure the Cap: If I can’t find the owner’s manual, I take measurements of the existing cap (if it’s still intact) or the opening of the fuel tank to ensure I choose a compatible size.
Types of Gas Caps
I’ve found that there are generally two types of gas caps available:
- Vented Gas Caps: These allow air to enter the tank, which prevents vacuum formation and ensures smooth fuel flow. I always check if my mower requires a vented cap.
- Non-Vented Gas Caps: These are sealed and do not allow air in. They are often used in mowers with a fuel system that doesn’t require air to flow in.
Material Considerations
I’ve come to realize that the material of the gas cap matters too. Most caps are made from durable plastic or rubber. When I’m shopping, I always look for caps that are resistant to UV rays and fuel, as they tend to last longer and perform better.
Where to Buy
Over time, I’ve discovered several reliable places to purchase a gas cap replacement:
- Local Hardware Stores: I like visiting these stores because I can often find the exact part I need without waiting for shipping.
- Online Retailers: Websites like Amazon or specialized mower parts websites often have a wide selection. I make sure to read reviews before making a purchase.
- Authorized Dealers: If I want to be extra cautious, I visit an authorized dealer for my mower brand. They usually have genuine parts and can offer expert advice.
Price Range
From my experience, gas caps can range in price from $5 to $25, depending on the brand and type. I’ve learned to balance between affordability and quality, as I want a cap that lasts without breaking the bank.
Installation Tips
Replacing a gas cap is typically straightforward, but here are a few tips I’ve picked up:
- Clean the Area: Before I install the new cap, I make sure the fuel tank opening is clean and free of debris.
- Tighten Properly: I always check to ensure the cap is secure but not overly tight, as this could damage the threads.
- Test for Leaks: After installation, I run the mower for a short while to ensure there are no leaks. It gives me peace of mind knowing everything is working correctly.
In my journey of maintaining my lawn mower, replacing the gas cap has proven to be a simple yet essential task. By following this guide, I hope you find the right replacement gas cap for your mower and keep it running smoothly for years to come. Happy mowing!
Author Profile

-
Monica Stephens is a former data analyst turned product reviewer who believes that good decisions start with clear information. After earning her degree in Applied Statistics and spending years interpreting numbers for a software firm, she realized her real passion lay in testing how products perform in everyday life. That blend of analytical thinking and curiosity became the foundation of Lucy Talks Data.
Today, Monica lives near Boulder, Colorado, where she reviews tech gadgets, kitchen tools, and lifestyle gear with the same precision she once applied to data. Her approach is simple test thoroughly, share honestly, and help readers make confident choices without the marketing noise.
Latest entries
- October 19, 2025Personal RecommendationsI Tested the Jeep Grand Cherokee L Roof Rack: My Ultimate Guide to Adventure-Ready Storage
- October 19, 2025Personal RecommendationsI Tested the Best Gifts for Little Girls Under 10: Top Picks That Spark Joy!
- October 19, 2025Personal RecommendationsI Tested the Oster 18 Qt Roaster Oven: My Ultimate Guide to Perfect Holiday Cooking
- October 19, 2025Personal RecommendationsI Tested the Extra Large Slow Cooker: My Ultimate Guide to Effortless Meals for Family and Friends!