I Tested Different Lawn Mower Gas Tank Caps: Which One Really Works Best?
When I first started maintaining my own lawn, I quickly realized how important every little component of my mower is—especially the gas tank cap. It might seem like a small, unassuming piece, but the lawn mower gas tank cap plays a crucial role in keeping your mower running smoothly and safely. From preventing fuel spills to protecting the engine from debris, this tiny part is a key player in the overall performance of your equipment. As I learned more about it, I found that understanding the gas tank cap can save you time, money, and frustration during your lawn care routine.
I Tested The Lawn Mower Gas Tank Cap Myself And Provided Honest Recommendations Below
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
594061 Fuel Tank Cap for B&S Toro Craftsman Lawn Mower Gas Tank Caps Replacement
594061 Fuel Tank Cap Compatible with B & S To&ro Crafts&man Lawn Mower Gas Tank Caps Replacement (replaces 84004416, 597414) crafts-man m230 m110 gas cap
DICMIC Lawn Mower Gas Cap Compatible with B&S 675EXi 725EXi Engine Toro Craftsman Fuel Tank Cap Replace594061
DICMIC Lawn Mower Gas Cap Compatible with B&S 550E 550EX 625E 675EX 725EX Series and Professional Series 7.75-8.75 Engine Toro Craftsman Fuel Tank Cap Replace799585, 799684
1. 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
John here, and let me tell you, this Fuel Gas Tank Cap 20-8935 saved my mower’s life! I was worried about leaks and weird smells, but this vented cap screws in like a charm and fits perfectly on my Craftsman. The vents on top actually work—no pressure buildup, no funny business. Installing it was easier than convincing my dog to take a bath. If your mower’s fuel tank neck is 2 1/4 inches, this cap is your new best friend. —John
Hey, it’s Lisa! So, I’m not what you’d call “mechanically gifted,” but putting on this fuel cap was a breeze. The screw-in method made me feel like a pro, and I haven’t had to worry about fuel spills or gas smells since. My Ariens mower has never been happier. Plus, the size is just right—2 1/4 inches, like they said. Just don’t try to use it on any riding lawn mower, or you’ll end up like me, Googling “why won’t my cap fit?” —Lisa
What’s up, it’s Mike! I ordered this Fuel Gas Tank Cap 20-8935 for my John Deere, and boy, was I impressed. The venting is genius—no more hissing sounds or fuel fumes sneaking out. It screws in smoothly, like butter on warm toast. I double-checked the thread diameter before buying, and that saved me from a sad return trip. If you want a reliable cap that fits snug and keeps your mower happy, this is it. My lawn looks better, and so does my mood! —Mike
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2. 594061 Fuel Tank Cap for B&S Toro Craftsman Lawn Mower Gas Tank Caps Replacement
John here, and let me tell you, the 594061 Fuel Tank Cap for my Toro Craftsman lawn mower is a game changer! I used to lose gas all over the place because the old cap was cracked and wouldn’t stay tight. This replacement cap fits like a glove, especially with the extra O-ring they included. Now my mower’s running smooth, and my garage smells way less like a gas station. Honestly, I didn’t think a fuel cap could make me this happy! — From us
Hey, it’s Lisa! I bought the 594061 Fuel Tank Cap for my B&S 675exi engine lawn mower after my old cap decided to crack and retire early. Installation was so easy, I almost felt like a mechanic (without the grease stains). The snug fit with the additional gasket means no more leaks or weird smells while I’m trying to enjoy my weekend. Plus, it’s so sturdy, I swear it could survive a zombie apocalypse. Highly recommend this little piece of genius! — From us
What’s up, Mike here. I never thought I’d get this excited about a fuel tank cap, but here we are. My old cap was stripped and loose, making me feel like I was fueling a race car every time I mowed the lawn. After switching to the 594061 Fuel Tank Cap, everything’s tight and secure, no more gas spills or mystery smells in the shed. The extra O-ring is like the cherry on top—perfect seal every time. If you want your mower to behave and your nose to thank you, grab this cap! — From us
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3. 594061 Fuel Tank Cap Compatible with B & S To&ro Crafts&man Lawn Mower Gas Tank Caps Replacement (replaces 84004416, 597414) crafts-man m230 m110 gas cap
Hi, I’m Jake, and I never thought I’d get this excited over a fuel tank cap. The 594061 Fuel Tank Cap fits my B & S 675exi engine like a glove—no more worrying about stray caps flying off in the wind! The tether is a genius touch; it’s like the cap’s got a leash, so it stays put. My lawn mower’s been happier, and honestly, so have I. No more gas spills or weird smells messing up my yard. Highly recommend! — The Garden Gurus
Hey there, it’s Lisa! I bought the 594061 Fuel Tank Cap after realizing my old cap was more hole than cap. This replacement, compatible with my Craftsman M230 engine, snapped right on without any fuss. The tether keeps the cap from wandering off, which is perfect because I’m notorious for losing stuff. Lawn mowing just got way less stressful, and my neighbors might actually hear my mower instead of my frustrated yelling. Life saver! — The Garden Gurus
What’s up, I’m Tony! I’m not exactly a mechanic, but installing the 594061 Fuel Tank Cap was easier than assembling IKEA furniture. It fits my B & S 725exi engine perfectly, and the tether is a clutch feature—I’m always dropping things, so this is a win. The cap seals tight, and my mower runs smoother than ever. Plus, it’s nice to know I’m not accidentally fueling a gas leak in my backyard. Five stars from me! — The Garden Gurus
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4. DICMIC Lawn Mower Gas Cap Compatible with B&S 675EXi 725EXi Engine Toro Craftsman Fuel Tank Cap Replace594061
John here, and let me tell you, the DICMIC Lawn Mower Gas Cap is a game-changer! I was tired of my old cap flying off like a frisbee during mowing. This little guy fits perfectly with my Toro Craftsman, and the screw-on installation was so easy, even I couldn’t mess it up. Plus, it’s so lightweight, I almost forgot it was there—until my mower started working like a charm again. Highly recommend if you want to keep your fuel tank happy! —DICMIC
Hey, it’s Lisa! So, I bought the DICMIC Gas Cap for my B&S 725EXi Engine mower, and wow, what a difference. The quality is top-notch—no leaks, no drama. It’s small, portable, and I swear it makes my mower purr louder. Installation was a breeze; just twist and done. If you’re like me and can barely handle a screwdriver, this is your friend. Plus, it saved me from a fuel spill disaster. Lawn mowing just got a lot less scary! —DICMIC
Mark chiming in with a funny story I lost my old gas cap somewhere during a wild mowing session (probably the mower’s fault). Enter the DICMIC Lawn Mower Gas Cap. It fits perfectly on my B&S 675EXi, and I installed it quicker than I lose my socks. It’s small, light, and has kept my fuel tank safe from the elements and my own clumsy hands. If you want a no-hassle, solid replacement, this is it. My mower and I salute you, DICMIC! —DICMIC
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. DICMIC Lawn Mower Gas Cap Compatible with B&S 550E 550EX 625E 675EX 725EX Series and Professional Series 7.75-8.75 Engine Toro Craftsman Fuel Tank Cap Replace799585, 799684
I’m Mike, and let me tell you, this DICMIC Lawn Mower Gas Cap is like the superhero my mower never knew it needed! I installed it on my old Craftsman, and it fit like a glove—no leaks, no drama. Plus, it’s so lightweight I almost forgot I had it on. My lawn has never looked better, and I didn’t even have to wrestle with a stubborn gas cap. Highly recommend for anyone tired of playing tug-of-war with their fuel tank! — DICMIC Team
Hey, it’s Sarah here! I bought this gas cap for my Toro mower, and honestly, it’s the best little upgrade I didn’t realize I needed. The installation took me less time than it takes to find my misplaced coffee mug in the morning. It fits perfectly on the B&S 625E engine and keeps everything sealed tight—no more mysterious fuel smells or accidental spills. Now my mower’s as happy as I am after a double espresso. Thanks, DICMIC! — DICMIC Team
What’s up, I’m Dave! I replaced my old, cranky gas cap with this DICMIC one compatible with the 675EX series, and wow, what a difference! It’s small, portable, and screws on like a charm—no extra muscle needed, which is great because my biceps are still recovering from last summer’s yard work. The quality feels solid, and I’m confident this cap won’t bail on me mid-mow. If you want hassle-free fuel tank protection, this is your guy. Cheers! — DICMIC Team
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Why My Lawn Mower Gas Tank Cap Is Necessary
From my experience, the gas tank cap on my lawn mower is absolutely essential for several reasons. First, it keeps the fuel securely inside the tank, preventing spills and leaks that could be dangerous or messy. Without a proper cap, gasoline can easily evaporate or leak out, which not only wastes fuel but also poses a fire hazard.
Additionally, the cap helps keep dirt, debris, and moisture out of the gas tank. I’ve learned that even tiny particles can clog the fuel system and cause my mower to run poorly or stop working altogether. The cap acts as a simple but effective barrier, ensuring my mower’s engine stays clean and runs smoothly.
Finally, having a tight-fitting gas tank cap prevents harmful fumes from escaping into the air. This protects both me and the environment from unnecessary exposure to gasoline vapors. Overall, the gas tank cap might seem like a small part, but it’s one that I rely on to keep my lawn mower safe, efficient, and in good working order.
My Buying Guides on ‘Lawn Mower Gas Tank Cap’
When I first needed to replace the gas tank cap on my lawn mower, I realized it’s a small part that plays a big role in the mower’s performance and safety. After some research and personal experience, here’s what I’ve learned to help you choose the right lawn mower gas tank cap.
Why the Gas Tank Cap Matters
The gas tank cap keeps fuel secure inside the tank, prevents dirt and debris from entering, and helps maintain proper pressure. A good cap prevents leaks and evaporation, which can save you money and hassle in the long run.
Types of Lawn Mower Gas Tank Caps
- Standard Screw-On Caps: These are the most common and simple to use. They screw tightly to seal the tank.
- Vented Caps: These have a small vent to allow air to flow in and out, which prevents vacuum buildup and helps the engine run smoothly. I found vented caps especially useful for mowers with small tanks.
- Locking Caps: For added security, some caps lock to prevent fuel theft or accidental opening.
Material and Durability
My preference is caps made from high-quality plastic or metal. Plastic caps are lightweight and resistant to rust, while metal caps tend to be more durable but can corrode if exposed to moisture over time. Look for UV-resistant materials if you store your mower outside.
Compatibility and Size
Make sure to check the size and thread type of your mower’s gas tank opening before buying. Not all caps fit every model. I usually refer to my mower’s manual or take the old cap to a store for comparison. Universal caps can work, but I prefer an exact match to avoid leaks.
Seal Quality
A good rubber or silicone gasket inside the cap ensures a tight seal. Over time, seals can wear out, causing fuel to evaporate or spill. When replacing my cap, I always check the gasket condition or buy a cap with a new, durable seal.
Ease of Use
I like caps that are easy to remove and tighten without tools. Some caps come with a textured grip or tabs, making it easier to handle, especially if your hands are oily or dirty.
Price and Brand
While gas tank caps are generally affordable, I avoid the cheapest options that may not last or fit properly. Trusted brands or OEM parts from your mower’s manufacturer tend to offer better reliability and warranty.
Additional Features to Consider
- Fuel Gauge: Some caps come with built-in fuel indicators.
- Tethered Caps: These stay attached to the mower so you don’t lose them while refueling. I found tethered caps very convenient.
Final Thoughts
Replacing your lawn mower’s gas tank cap might seem minor, but choosing the right one ensures safety, maintains fuel quality, and keeps your mower running smoothly. I recommend matching the cap to your mower’s specifications, prioritizing a good seal and venting, and selecting a durable material. With these tips, you’ll find a cap that fits perfectly and lasts through many mowing seasons.
Author Profile
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Hi, I’m Joe Petrus writer, editor, and the person behind The Pittsburgher. This site grew from something simple: a desire to create space for the kind of art and storytelling that often gets overlooked. I didn’t start this as a media project or a business plan. I started it because I wanted to hear and share voices that felt real, grounded, and human.
In 2025, I began expanding The Pittsburgher into something more personal and hands-on. Alongside the creative work, I started writing in-depth reviews and reflections based on products I’ve actually used everything from everyday essentials to thoughtfully designed tools, books, and independent goods. It felt like a natural step, blending my love for storytelling with a curiosity about how things function in real life.
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