Find The Best Gas Cap For Your Lawn Mower | Top Picks

Arif R Rahman | 13 September

Searching for the best gas cap for your lawn mower? Our expertly-curated list of top recommendations includes durable and easy-to-install

A high-quality gas cap is essential to ensure proper fuel containment, prevent leaks, and maintain optimal engine performance. With a wide range of options available in the market, it can be overwhelming to choose the right one. But worry not! We have done the research for you and curated a list of top recommendations. From durability to ease of installation, we’ve considered all factors to help you find the perfect gas cap that fits your lawn mower’s needs. Read on to discover our expert picks and take your mowing experience to a whole new level!

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Why is the Best Gas Cap for Lawn Mower Necessary?

A properly functioning gas cap is an essential component of any lawn mower. It not only ensures the safety and efficiency of your machine but also plays a crucial role in preventing fuel contamination and evaporation. Investing in the best gas cap for your lawn mower can offer several benefits that make it a necessary accessory for every user.

1. Fuel Protection

The best gas caps for lawn mowers provide a tight seal, preventing fuel leakage during storage or operation. This seal protects against the entry of dirt, dust, water, and other contaminants that could potentially damage the engine or clog the fuel lines. By keeping your fuel clean and uncontaminated, a high-quality gas cap extends the life of your lawn mower’s engine.

2. Fuel Conservation

An effective gas cap prevents fuel evaporation, which can occur when using a subpar or damaged cap. This evaporation not only wastes precious fuel but also leads to air pollution. The best gas caps are designed with advanced sealing mechanisms that minimize evaporation, ensuring you get the most out of each tank of gasoline while reducing emissions.

3. Safety Assurance

Using an inferior or ill-fitting gas cap on your lawn mower can pose safety risks. A loose or faulty cap may allow flammable vapors to escape, increasing the chances of accidental ignition or fire hazards. The best gas caps are specifically engineered to meet safety standards, offering peace of mind and minimizing potential dangers associated with fuel vapor leaks.

4. Easy Handling and Maintenance

Investing in a high-quality gas cap ensures convenient handling and maintenance of your lawn mower’s fuel system. The best gas caps are designed for easy installation, removal, and refueling operations, making them user-friendly even for those with limited technical expertise. Additionally, some models come with features such as built-in funnel systems or tether straps that further enhance ease of use and prevent misplacement.

5. Compatibility and Durability

The best gas caps for lawn mowers are designed to fit a wide range of models and brands. They are crafted from durable materials such as high-grade plastics or corrosion-resistant metals, ensuring longevity and resistance to wear and tear. With a compatible and durable gas cap, you can have confidence in its long-term performance without the need for frequent replacements.

In conclusion, the best gas cap for your lawn mower is not just an accessory but a necessary component that ensures fuel protection, conservation, safety assurance, easy handling, compatibility, and durability. By investing in a high-quality gas cap, you can enhance the efficiency and lifespan of your lawn mower while enjoying hassle-free maintenance and peace of mind.

Our Top Picks

1. Grasshopper Mower Screw-On Fuel Cap with Fuel Level Indicator – Genuine Replacement Part

Monitor your fuel level easily with this genuine replacement fuel cap for Grasshopper mowers.

Grasshopper Mower Screw-On Fuel Cap with Fuel Level Indicator - Genuine Replacement Part

Distinctive Facets:

  • COMPATIBILITY INFO: Screw-on fuel cap with fuel level indicator for Grasshopper FrontMount models built between 1985 and 2007. Grasshopper Part Number 141125 For Grasshopper FrontMount 4.3 gallon gasoline and 8.0 gallon diesel fuel tanks. Protect your investment and ensure peak performance by trusting only genuine Grasshopper replacement parts and supplies to maintain your Grasshopper zero-turn mower running at its best.
  • PART DIMENSIONS: 11.75 in. length x 3 in. width x 3 in. height. These parts are manufactured to meet ultra-precise engineering specifications, and can help you maximize performance and significantly extend the life of your machine. Perform all maintenance as recommended in operator’s manual and protect your mower from harsh elements by storing in a shelter or under a cover.
  • QUALITY FIRST, MONEY SECOND: We focus on providing our clients higher value for the dollars they invest with us. The service-friendly Grasshopper design makes it easy to keep your Grasshopper zero-turn mower in peak operating condition. Fewer grease points and easy access to belts and filters translate into less time spent maintaining your mower, and more time using it profitably.
  • GRASSHOPPER INNOVATION: At Grasshopper, one innovation leads to another. As a pioneer in manufacturing zero-radius ride-on mowing equipment, The Grasshopper Company immediately set a pace of rapid advancement and innovation that continues today. When company engineers designed our first Grasshopper mower in 1969, they envisioned a low maintenance, highly maneuverable mower tough enough to serve the commercial mowing industry. They delivered one that would transform the industry for years.
  • MANUFACTURING EFFICIENCIES: At Grasshopper, we believe that being aware of environmental issues benefits not only our planet, but our customers and our business. The Grasshopper Company endeavors not only to recycle lawn materials but also raw materials in the production process. Our Computer Aided Drafting/Computer Aided Machining system fully integrated with a 3-D solid modeling computer design system optimizes the use of material and production time.

Convenient fuel level indicator for easy monitoringDurable construction ensures long-lasting performancePerfect fit for Grasshopper FrontMount models built between 1985 and 2007


May not be compatible with newer Grasshopper mower modelsFuel level indicator may require occasional calibration

Product Info
Item Dimensions(Height: 3 Inches, Length: 11.75 Inches, Weight: 0.29 Pounds, Width: 3 Inches)

2. GENUINE OEM Honda Walk-Behind Lawn Mower Engines Fuel Tank Gas Cap

Ensure a secure gas tank with this genuine OEM gas cap designed specifically for Honda engines.

GENUINE OEM Honda Walk-Behind Lawn Mower Engines Fuel Tank Gas Cap
Product Info
Item Dimensions(Height: 1 Inches, Length: 2.25 Inches, Width: 2.25 Inches)

3. John Deere OEM Gas Cap – GX22166,1-

Upgrade your John Deere equipment with this genuine OEM gas cap. Reliable and long-lasting.

John Deere OEM Gas Cap - GX22166,1-
Product Info
BrandJohn Deere
Item Dimensions(Weight: 0.25 Pounds)

4. Gas Cap For Tecumseh 35355+

Replace your worn-out or lost Tecumseh gas cap with this affordable and durable alternative.

Gas Cap For Tecumseh 35355+

Distinctive Facets:

  • Excees OEM Specs
  • 1 Year Warranty
  • 1

+Affordable replacement option


+May not provide as tight of a seal as original Tecumseh caps

Product Info
Item Dimensions(Height: 1 Inches, Length: 1 Inches, Weight: 0.063 Pounds, Width: 1 Inches)

5. Eisens Fuel Gas Cap with Tether For MTD 951-12428 Cub Cadet Troy-Bilt Murray Craftsman+

Secure your fuel tank with this reliable gas cap designed for MTD, Cub Cadet, Troy-Bilt, and more.

Eisens Fuel Gas Cap with Tether For MTD 951-12428 Cub Cadet Troy-Bilt Murray Craftsman+

Distinctive Facets:

  • ID: 2.25 ” Vented Cap Part Number 951-12428 Replaces Prior MPN 753-05969 751-12428 751-10703A 751-10703 751-12429, 751-10447A, 751-10447, 951-12429
  • MTD IFO Detail in the description
  • Fits Cub Cadet i1042 & ZTT42 i1046 & ZTT46 i1050 & ZTT50 RZT-42 RZT-50 RZT-54 RZT-L54 RZT-S 42 RZT-S 46 S42 S46
  • Fits Troy Bilt: Mustang XP W/ 42″ & 50″ Zero Turn Mowers
  • Fits Craftsman 24725001, 24725002, 247250610, 247250010, 247250020
  • Fits Murray 17AC2ACS058 (RZT-42)(MZ2142)(2012), 17AC2ACS058 (MZ210-42 RZT42)(2013)
  • Fits Troy-Bilt 17WF2ACS011 (2012), 17BF2ACP011 (2009), 17BF2ACP011 (2010), 17WF2ACP011, 17WF2ACP211, 17BF2ACP066 (2009), 17BF2ACP211 (2009), 17BF2ACP211 (2010), 17WF2ACP011 (2010), 17WF2ACP211 (2010), 17WF2ACP011 (2011), 17WF2ACP066 (2011), 17WF2ACP211 (2011), 17AF2ACP066 (2012), 17WF2ACP011 (2012), 17ADCACK066 (2013), 17ADCACT066 (2013), 17AFCACP011 (2013), 17AFCACS011 (2013), 17WFCACP011 (2013), 17WFCACS011 (2013)

+Comes with a tether to prevent loss


+Tether may be too short for some users

Product Info

6. Everest Parts Supplies Fuel Gas Cap Replacement for Honda Engines – OEM 17620-ZL8-003, 17620-ZL8-013, 17620-ZL8-023+

Ensure a proper seal on your Honda engine with this high-quality fuel cap replacement.

Everest Parts Supplies Fuel Gas Cap Replacement for Honda Engines - OEM 17620-ZL8-003, 17620-ZL8-013, 17620-ZL8-023+

Distinctive Facets:

  • Fits Models: GC135, GC160, GC190, GCV135, GCV160, GCV190, GX100, GXV160
  • Replaces Part Numbers: 17620-ZL8-003, 17620-ZL8-013, 17620-ZL8-023
  • All Our Parts Meet or Exceed OEM Standards!

+OEM quality ensures a perfect fit


+Limited compatibility only with specified Honda engine models

Product Info
BrandEverest Parts Supplies
ManufacturerEverest Parts Supplies
Item Dimensions(Weight: 0.5 Pounds)

7. P021012210 Genuine ECHO Fuel Gas Cap – GT-225, SRM-225, HC-155, HC165, HC-185, PAS-225+

Keep your Echo equipment running smoothly with this genuine Echo fuel cap replacement.

P021012210 Genuine ECHO Fuel Gas Cap - GT-225, SRM-225, HC-155, HC165, HC-185, PAS-225+

Distinctive Facets:

  • Includes (1) Cap Asemmbly.
  • Genuine Echo Replacement Part.
  • New, Bulk Packed.
  • Consult owners manual for proper part number identification and proper installation.
  • Please refer to list for compatibility.

+Authentic Echo part for guaranteed compatibility


+Limited compatibility only with specified Echo models

Product Info
BrandArtist Unknown
Item Dimensions(Height: 1 Inches, Length: 1 Inches, Weight: 0.01 Pounds, Width: 1 Inches)

Buying Guide: Choosing the Best Gas Cap for Your Lawn Mower

When it comes to maintaining your lawn mower, even seemingly small components like the gas cap play a crucial role. A gas cap not only prevents fuel from spilling out but also ensures that no dirt or debris enter the tank, which could potentially damage the engine. With so many options available in the market, choosing the best gas cap for your lawn mower may seem overwhelming. However, by considering a few key factors, you can make an informed decision and find a gas cap that meets your needs.

1. Compatibility

Before purchasing a gas cap, it is essential to check its compatibility with your specific lawn mower model. Different lawn mower brands and models have varying fuel tank sizes and designs. Ensure that the gas cap you choose is designed to fit securely on your particular lawn mower’s fuel tank opening. This will prevent any leakage or fitment issues.

2. Material Quality

Gas caps are typically made of either plastic or metal. Each material has its advantages and considerations to keep in mind. Plastic caps are lightweight and resistant to corrosion but may be more prone to cracking over time. On the other hand, metal caps offer durability and are less likely to break; however, they may be susceptible to rusting if not properly maintained.

3. Venting System

A good gas cap should have a reliable venting system in place. Ventilation allows air into the tank as fuel is consumed, preventing vapor lock and ensuring optimal performance of your lawn mower engine. Look for gas caps that have built-in vents or breather valves designed to maintain proper pressure inside the fuel tank.

4. Seal Quality

An effective seal is critical for preventing fuel leakage and keeping dirt out of the tank. Look for gas caps with high-quality rubber gaskets that provide a tight seal when closed properly. A secure seal will ensure that no fuel evaporates unnecessarily and that no contaminants enter the fuel system.

5. Ease of Use

Consider the convenience and ease of use when selecting a gas cap for your lawn mower. Look for features such as easy grip handles or textured surfaces that make it effortless to open and close the cap, even with gloves on. Additionally, some gas caps may have innovative designs that allow for quick-release or one-hand operation.

6. Price and Warranty

Gas caps are relatively inexpensive, but prices can vary depending on the brand and material. Consider your budget while also prioritizing quality and durability. It’s also advisable to check if the gas cap comes with a warranty to ensure you’re protected against any manufacturing defects or premature failure.

By considering these factors, you can confidently choose the best gas cap for your lawn mower. Remember to check customer reviews and ratings online to gain insights into the performance and reliability of different gas caps before making your final decision.


What is the best gas cap for a lawn mower?

The best gas cap for a lawn mower is one that is designed to fit securely, preventing any leaks or spills. It should also be easy to remove and replace when refueling.

How does using the best gas cap benefit my lawn mower?

Using the best gas cap for your lawn mower ensures a tight seal, preventing fuel evaporation and reducing the risk of contamination. This helps maintain optimal engine performance and prolongs the life of your equipment.

Are all gas caps universally compatible with different lawn mower models?

While some gas caps may have universal compatibility, it’s crucial to check the specifications and ensure it fits your specific lawn mower model. Manufacturers often provide compatibility lists to help you find the right gas cap for your machine.

Can a high-quality gas cap improve fuel efficiency in my lawn mower?

Yes, a high-quality gas cap can certainly contribute to improved fuel efficiency in your lawn mower. By creating an effective seal, it minimizes fuel evaporation and ensures more precise control over the amount of fuel consumed during operation.

What features should I look for when choosing the best gas cap for my lawn mower?

When choosing a gas cap for your lawn mower, consider features like durable construction materials (such as corrosion-resistant plastic or metal), proper venting mechanisms, secure threading, and compatibility with your specific model. These factors contribute to optimal performance and longevity.

Can I replace a damaged or lost gas cap with any available option?

It’s always recommended to replace a damaged or lost gas cap with one specifically designed for your lawn mower model. This ensures proper fitment and functionality, reducing the risk of leaks or other issues that could impact performance.

Tags: Gas Caps

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