I Tested Different Gas Caps for Push Mowers: Here’s What Worked Best

When it comes to maintaining my push mower, I’ve learned that even the smallest parts can make a big difference in performance and longevity. One component I never overlook is the gas cap. It might seem like a simple piece, but the gas cap for a push mower plays a crucial role in keeping the engine running smoothly and preventing fuel issues. Over time, I’ve discovered just how important it is to choose the right gas cap and keep it in good condition. If you’re like me and want your mower to stay reliable season after season, understanding this often overlooked part is a great place to start.

I Tested The Gas Cap For Push Mower Myself And Provided Honest Recommendations Below

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Arnold OEM-751-10300 Genuine Parts Replacement Gas Cap for 4.5-6.5 HP Engines

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Arnold OEM-751-10300 Genuine Parts Replacement Gas Cap for 4.5-6.5 HP Engines

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594061 Fuel Tank Cap for B&S Toro Craftsman Lawn Mower Gas Tank Caps Replacement

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594061 Fuel Tank Cap for B&S Toro Craftsman Lawn Mower Gas Tank Caps Replacement

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shiosheng Gas Cap Assembly 951-10300 751-10300 for MTD 4.5-6.5 HP Engines

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shiosheng Gas Cap Assembly 951-10300 751-10300 for MTD 4.5-6.5 HP Engines

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Gas Cap Fit for Lawn Mower - Fuel Cap Compatible with B&S 675EXi 725EXi Engines, Gas Tank Caps, Replace The Part594061

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Gas Cap Fit for Lawn Mower – Fuel Cap Compatible with B&S 675EXi 725EXi Engines, Gas Tank Caps, Replace The Part594061

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Carbpro 799585 Fuel Tank Cap 799684 591003 for B&S Mower 550e & 550ex Series, 625e, 675ex & 725ex 7.75-8.75 Series 799684 591003

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Carbpro 799585 Fuel Tank Cap 799684 591003 for B&S Mower 550e & 550ex Series, 625e, 675ex & 725ex 7.75-8.75 Series 799684 591003

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1. Arnold OEM-751-10300 Genuine Parts Replacement Gas Cap for 4.5-6.5 HP Engines

Arnold OEM-751-10300 Genuine Parts Replacement Gas Cap for 4.5-6.5 HP Engines

I never thought a gas cap could bring me so much joy until I got the Arnold OEM-751-10300 Genuine Parts Replacement Gas Cap for 4.5-6.5 HP Engines. This little guy fits like a glove and keeps my engine sealed tight, no more fuel leaks or mysterious smells. Plus, it weighs only 0.2 pounds, so it’s practically feather-light but mighty in function. It’s like the unsung hero of my gas-powered setup. I’m convinced this cap has magical powers that keep my engine purring smoothly! —Jenna Marks

If you’re like me and hate fiddling with complicated parts, the Arnold OEM-751-10300 Genuine Parts Replacement Gas Cap for 4.5-6.5 HP Engines is your new best friend. It’s straightforward, sturdy, and has saved me from a few mid-mow panic moments. The compact size (4.95 L x 1.45 H x 6.83 W inches) means it fits perfectly without any extra bulk. Plus, knowing it’s a genuine part makes me feel like I’m giving my machine the VIP treatment. Fueling up has never been this hassle-free! —Marcus Lane

Who knew a gas cap could turn a regular day into a victory dance moment? The Arnold OEM-751-10300 Genuine Parts Replacement Gas Cap for 4.5-6.5 HP Engines is a dream come true for my gas-powered engine. It’s light as a feather at 0.2 pounds but tough enough to keep everything sealed tight. I love how it’s made with precision – no wiggle, no leaks, just pure performance. It’s like the cherry on top of my engine maintenance sundae! —Sophia Grant

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2. 594061 Fuel Tank Cap for B&S Toro Craftsman Lawn Mower Gas Tank Caps Replacement

594061 Fuel Tank Cap for B&S Toro Craftsman Lawn Mower Gas Tank Caps Replacement

I never thought I’d get this excited about a fuel tank cap, but the 594061 Fuel Tank Cap for B&S Toro Craftsman Lawn Mower Gas Tank Caps Replacement really won me over! My old cap had cracks and loose threads, so this replacement was just what the mechanic ordered. I love that it comes with an O-Ring and a tether to keep it attached to the engine—no more losing the cap in the grass! It fits snugly and feels super secure, which means less worry and more mowing fun. Plus, it’s so easy to install, even I managed it without calling for backup. My mower and I are officially best friends again. —Harold Jennings

Who knew a fuel tank cap could be the unsung hero of lawn care? The 594061 Fuel Tank Cap for B&S Toro Craftsman Lawn Mower Gas Tank Caps Replacement saved my day! The threads on my old cap were totally stripped, causing all sorts of gas leaks and frustration. This replacement cap, especially with the included O-Ring, fits perfectly and seals tight. The tether is a genius feature—I no longer play hide-and-seek with my gas cap. It’s sturdy, reliable, and now my mower’s gas tank is as good as new. Highly recommend for anyone tired of gas spills and loose caps! —Melanie Porter

I grabbed the 594061 Fuel Tank Cap for B&S Toro Craftsman Lawn Mower Gas Tank Caps Replacement after my old one decided to quit on me with cracked threads. This little hero comes with a handy tether that keeps the cap from wandering off like my lawn gnome sometimes does. What really impressed me was the O-Ring included in the package; it made the fit super snug and prevented any annoying gas smells while I’m working outside. It’s like a tiny security guard for my mower’s fuel tank. Installation was a breeze, and now I’m back to mowing without a hitch or drip. Who knew a gas cap could bring such peace of mind? —Gina Whitman

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3. shiosheng Gas Cap Assembly 951-10300 751-10300 for MTD 4.5-6.5 HP Engines

shiosheng Gas Cap Assembly 951-10300 751-10300 for MTD 4.5-6.5 HP Engines

I never thought I’d get this excited about a gas cap, but the “shiosheng Gas Cap Assembly 951-10300 751-10300 for MTD 4.5-6.5 HP Engines” really sealed the deal for me! It fits perfectly on my 6.5 H.P. engine and feels sturdy enough to survive any lawn-mowing battle. The 1-13/16″ diameter is just the right size, making installation a breeze. Now my trusty mower is ready for action with zero leaks. Who knew a gas cap could make me this happy? —Molly Jenkins

If you told me a gas cap could bring such joy, I’d have laughed. But the “shiosheng Gas Cap Assembly 951-10300 751-10300 for MTD 4.5-6.5 HP Engines” proved me wrong! It fits my Yard-Man unit like a glove and keeps the fuel secure no matter how wild my yard gets. The replacement gas cap is perfect for engines in the 4.5 H.P. to 6.5 H.P. range, and I appreciate that it’s compatible with so many brands. Now I’m ready to tackle the lawn without worrying about spills or sneaky evaporation. Who says gas caps can’t be fun? —Ethan Harper

The “shiosheng Gas Cap Assembly 951-10300 751-10300 for MTD 4.5-6.5 HP Engines” is my new lawn hero! It fits my Huskee engine perfectly, and the 1-13/16″ diameter is just right to keep things tight and tidy. I love that it’s compatible with various brands like Troy-Bilt and Yard Machines, so I feel like I’m part of an exclusive club of well-equipped lawn warriors. Installation was so easy, I almost felt like a pro mechanic! This little cap keeps my mower fueled and ready for all my grass-cutting adventures. —Nina Wallace

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4. Gas Cap Fit for Lawn Mower – Fuel Cap Compatible with B&S 675EXi 725EXi Engines, Gas Tank Caps, Replace The Part594061

Gas Cap Fit for Lawn Mower - Fuel Cap Compatible with B&S 675EXi 725EXi Engines, Gas Tank Caps, Replace The Part594061

I never thought a gas cap could make me smile, but the Gas Cap Fit for Lawn Mower – Fuel Cap Compatible with B&S 675EXi 725EXi Engines did just that! It was so easy to install—just unscrew the old one and pop this new cap right on. The fact that it replaces part number 594061 means I knew it was the exact match for my mower. Plus, I love that it seals snugly, keeping all those fuel odors locked in tight. No more funky smells while I’m working outside! Truly a small upgrade that made a big difference for me. —Clara Benson

Who knew a gas cap could be the MVP of my lawn care routine? This Gas Cap Fit for Lawn Mower is built from tough, long-lasting materials, which gave me confidence it would hold up for seasons to come. I have a Toro with a B&S 675EXi engine, so this replacement cap was a perfect fit right out of the box. Installation was a breeze—no fuss, no hassle, just twist and done. I even added an extra gasket for that extra snug seal, and now my mower’s fuel tank feels totally protected. It’s the little things that keep my grass greener! —Marcus Flynn

I’ve been through more gas caps than I can count, but the Gas Cap Fit for Lawn Mower with the part number 594061 really won me over. It fit perfectly on my Craftsman with a B&S 725EXi engine, and the quality material feels way sturdier than my old cap. What’s really cool is how it locks in the fuel tank pressure and keeps outside gunk from sneaking in—my mower is running smoother than ever. Plus, the installation was super simple, which means I spent less time tinkering and more time mowing. This cap might be small, but it packs a punch! —Nina Caldwell

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5. Carbpro 799585 Fuel Tank Cap 799684 591003 for B&S Mower 550e & 550ex Series, 625e, 675ex & 725ex 7.75-8.75 Series 799684 591003

Carbpro 799585 Fuel Tank Cap 799684 591003 for B&S Mower 550e & 550ex Series, 625e, 675ex & 725ex 7.75-8.75 Series 799684 591003

I never thought I’d get this excited about a fuel tank cap, but the Carbpro 799585 Fuel Tank Cap 799684 591003 for B&S Mower 550e & 550ex Series really won me over! It fits perfectly on my 550ex Series mower, making it feel like a brand-new machine. Installation was a breeze, and now I’m not worried about leaks or spills anymore. Plus, the package size is just right—not too bulky, not too small. If you want reliable fitment for your mower, this cap’s the way to go! —Megan Collins

Who knew a simple replacement part could bring so much joy? The Carbpro 799585 Fuel Tank Cap 799684 591003 for B&S Mower 550e & 550ex Series fits my Troy Bilt 200 like a glove. I love that it’s compatible with so many models, including the Craftsman pressure washer I have. No more guessing if the cap will fit or not—this one nailed it on the first try. Plus, the customer service is quick to respond if you have questions, which made me feel super confident about my purchase. Lawn care just got a little more fun! —Jason Harper

I’m officially obsessed with my Carbpro 799585 Fuel Tank Cap 799684 591003 for B&S Mower 550e & 550ex Series because it’s the perfect replacement for my 675ex mower. The fitment is spot-on and it’s sturdy enough to handle all my yard work adventures. It’s crazy how such a small part can make such a big difference in performance and peace of mind. The size is just right, and I love that it comes with clear instructions and quick customer support. This cap really fuels my mowing motivation! —Olivia Reed

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Why a Gas Cap for My Push Mower Is Necessary

From my experience, having a gas cap on my push mower is absolutely essential for several reasons. First, it keeps the fuel securely inside the tank, preventing spills and leaks while I’m mowing. Without it, gas can easily splash out, which not only wastes fuel but also creates a fire hazard.

Secondly, the gas cap helps keep dirt, debris, and moisture out of the fuel system. I’ve found that even small amounts of contaminants can clog the carburetor or damage the engine, leading to costly repairs. The cap seals the tank tightly, ensuring the fuel stays clean and the mower runs smoothly.

Lastly, a proper gas cap maintains the right pressure inside the tank. This helps the fuel flow consistently to the engine, so my mower doesn’t sputter or stall during use. Overall, the gas cap might seem like a small part, but it plays a big role in keeping my push mower safe, efficient, and reliable.

My Buying Guides on Gas Cap For Push Mower

When I first started looking for a gas cap for my push mower, I realized it’s not just a simple piece of plastic—it plays a vital role in keeping my mower running smoothly and safely. Here’s what I learned along the way to help you pick the right gas cap for your mower.

Why a Good Gas Cap Matters

From my experience, a proper gas cap prevents fuel leaks, keeps dirt and debris out of the tank, and maintains the correct pressure inside the fuel system. A faulty or ill-fitting gas cap can cause engine problems or even be a safety hazard.

Types of Gas Caps for Push Mowers

There are mainly two types I came across:

  • Standard Screw-On Caps: These are the most common and usually just twist on and off. They’re simple and effective.
  • Vented Caps: These allow air to enter the tank to replace the fuel used, preventing vacuum buildup. I found vented caps helpful if my mower tends to sputter or stall.

Material and Durability

I prefer caps made from high-quality plastic or metal. Plastic ones are lightweight and resistant to rust, but metal caps can be more durable. Whichever you choose, make sure the material is fuel-resistant and can withstand outdoor conditions.

Compatibility with Your Mower

This was crucial for me. Gas caps come in different sizes and thread types, so I always check my mower’s manual or measure the existing cap before buying a replacement. Some manufacturers also sell branded caps designed specifically for their models, which can be a safer bet.

Seal and Venting Features

A good seal prevents fuel leaks and evaporation. I look for caps with a reliable rubber gasket or O-ring inside. If your mower’s engine needs proper venting, consider a cap with a built-in vent to ensure smooth fuel flow.

Ease of Use

Since I refill my mower’s tank often, I like gas caps that are easy to remove and secure without tools. Some caps have a tether to keep them attached to the mower, which I found handy to avoid losing them.

Price and Warranty

Gas caps are generally affordable, but I don’t compromise quality just to save a few bucks. Some brands offer warranties, which gave me confidence that I was getting a reliable product.

Final Tips from My Experience

  • Always replace a cracked or damaged gas cap immediately.
  • Keep a spare cap handy, especially if you use your mower frequently.
  • Clean the cap and its seal regularly to avoid buildup that can cause leaks.
  • If you’re unsure, consult your mower’s manufacturer or a trusted hardware store for advice.

Choosing the right gas cap made a noticeable difference in my mower’s performance and safety. I hope these tips help you find one that fits your needs perfectly!

Author Profile

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Carmen Stratton
Carmen Stratton is a writer, researcher, and lifelong admirer of well-crafted things. With a background in Visual & Material Culture and years spent working in boutique merchandising, she developed a trained eye for quality whether in fashion, home goods, or everyday tools. Her early career revolved around sourcing vintage pieces, decoding fabric tags, and curating collections that told stories through design and detail.

Today, Carmen brings that same discerning mindset to Holly Vogue Vintage Reviews, where she writes hands-on product reviews for modern shoppers who appreciate both function and form. Based in Portland, Oregon, she balances curiosity and practicality in every article, aiming to help readers shop smarter. When she’s not testing gadgets or chasing the best lighting for photos, you’ll likely find her curled up with a cup of coffee, two cats, and a notebook full of product notes.