Are Lawn Mower Gas Caps Universal? (Explained)

Replacing a gas cap on your lawn mower may seem like a simple task, but it can be complicated if you’re not sure if the cap is universal. In our blog post on Are Lawn Mower Gas Caps Universal? Explained, we explain the different types of gas caps and whether they are interchangeable between different models and brands of lawn mowers.

If you’re curious about whether lawn mower bags are universal, check out our post on Are Lawn Mower Bags Universal? Explain for a clear answer.

Replace-Gas Cap for Craftsman Mower
Key Takeaways
Lawn mower gas caps come in different shapes and sizes
Not all lawn mower gas caps are universal
Some lawn mower gas caps are designed to fit specific models or brands
Loose or missing gas caps can cause problems like fuel leaks or reduced performance
Gas caps can be cleaned and replaced by the owner in many cases

Are Lawn Mower Gas Caps Universal?

Yes, gas caps are universal. They’re used on all types of lawn mowers, regardless of brand or model. Gas caps come in different sizes and colors to match the color scheme of your mower and are easy-to-replace parts that fit into most models made after 2016 (although some older models may not have a cap at all).

If you need to replace your gas cap—or if yours was lost or damaged in some way—you can find them easily on Amazon for less than $10!

When it comes to troubleshooting your lawn mower, understanding the function of the solenoid is essential. Our comprehensive guide on lawn mower solenoids can help you diagnose and fix any solenoid-related issues with your mower.

Types of Lawn Mower Gas Caps

Screw-on capA common type of gas cap that screws onto the fuel tank opening.
Bayonet capA type of cap that is pushed and turned to lock into place on the fuel tank.
Flip-top capA hinged cap that flips open to reveal the fuel tank opening.
Locking capA gas cap that can be locked with a key to prevent tampering or fuel theft.
Vented capA cap that includes a vent to allow air to flow into the fuel tank and prevent a vacuum from forming.

How to Replace Lawn Mower Cap?

Replacing your lawn mower cap is a simple task that can save you time, money, and headaches in the long run. The first step to replacing it is checking the existing one for cracks or damage that may cause leaks. If you find that there is some sort of damage, such as cracks or missing pieces, then it will need to be replaced immediately before any more gas leaks out onto your lawn.

First remove the old cap by unscrewing it from top of tank with a screwdriver or wrench if necessary; then put on new one over filler hole tightly until snug but not overtightened (a petroleum jelly lubricant may help). 

Make sure both caps are stored safely away from children and pets just in case they become loose and start spilling gas everywhere!

Water in your lawn mower’s gas tank can cause major problems, but there are solutions to this common issue. Check out our guide on the top 10 additives to remove water from your lawn mower gas tank for tips on keeping your mower’s fuel clean and functional.

Where Can I Buy a Universal Lawn Mower Cap?

You can buy a universal lawn mower cap online or in stores. You can find them at hardware stores and auto parts stores, but you’ll also find them at lawn mower repair shops, supply shops and even dealerships. They’re sold for about $10 to $20 each, depending on where you purchase it from.

Does a Universal Lawn Mower Cap Fit My Brand?

If you’re looking for a universal gas cap, you’ll find they all fit on any brand. It’s also important to note that these caps will not be the exact same brand as your mower. 

For example, if your lawnmower is made by Honda but you buy a universal cap from Husqvarna, then it will still work perfectly even though it’s not an exact match. 

The reason for this is because these caps are meant to seal the tank securely and prevent leakage during transport or storage of the unit without damaging any seals inside the tank itself.

Ensuring that your lawn mower is equipped with the right spark plug is crucial for optimal performance. Learn more about the importance of choosing the right spark plug for your mower in our guide on lawn mower spark plugs.

Does a Universal Lawn Mower Cap Fit All Brands?

No matter what brand you own, there’s a universal lawn mower cap that will fit it. They’re available in different sizes and styles, so you can find the perfect one for your needs. 

With so many options out there, it can be difficult to choose between them all. Don’t worry! We’ve put together this guide to help make things easier for you.

Do All Gas Cans Have Universal Cans?

One of the best things about universal gas cans is that they fit all brands of lawn mowers, and they also fit all brands of gas cans. This makes it easy to find what you need if you’ve lost or damaged your existing one.

If you don’t have a universal gas can yet, this is a good time to start looking for one online or at your local hardware store. 

A good place to start is by searching “universal lawn mower cap” on Google; this should yield results from several different sources that sell universal caps in many different colors and styles!

What Is the Best Choice for a Universal Gas Can?

You want to make sure you get a gas can that is made for your specific mower. If you have an older model, it may require more gas than a newer model, so getting the right size can is important. It’s also best to check if your mower needs unleaded or leaded fuel and get the right type of can as well.

When shopping for a new gas can, consider ease of use: how easy is it to carry? Is there an easy way to hold onto it while filling up your mower? 

How sturdy does the handle feel when carrying full cans through wet grass or over uneven ground? Look at how far away from your body the spout sits when you hold the nozzle upright; this will help determine whether you need something long enough to reach over tall grasses or sidearm movements at awkward angles (and also whether one hand is enough).

The right lawn mower blade can make all the difference in the quality of your lawn. Check out our guide on lawn mower blades to learn about the different types of blades and how to choose the right one for your mower.

Do Gas Caps Come in Colors That Match Your Lawn Mower?

In addition to being available in different colors, lawn mower gas caps also come in a variety of styles, shapes and sizes. Some are designed specifically for cars, trucks or motorcycles; others are more universal and can be used on multiple vehicles. 

If you want something that matches your car’s color scheme, look for one made out of stainless steel or other metal materials—these tend to last longer than plastic ones that break easily over time.

How Do You Know if Your Lawnmower Needs to Be Serviced?

Check the oil. If it’s low or dirty, add some more and check again in several hours.

Check the air filter. If it’s dirty, clean it off with a paper towel or rag and replace the old one with a new one from your local hardware store when you get home.

Check the spark plug. Replace if necessary; this will likely require professional assistance as they’re difficult to access without special tools (or worse yet, breaking something). You can also take it to an auto parts store where they’ll typically do this for free if there are no other problems with your mower (like an empty gas tank).

A lawn mower bag can be a helpful tool for collecting grass clippings and keeping your lawn looking tidy. Learn more about the benefits of lawn mower bags and how to choose the right one for your mower in our guide on lawn mower bags.


If you’re looking for a universal gas cap that will fit your lawnmower, then you’ve come to the right place! We have the most comprehensive selection on the web and can help you find one that fits your brand and budget. 

Our team is always available to answer any questions, and we offer fast shipping on all orders. We know finding what you need can be difficult sometimes—but not with us!

Further Reading

Here are some additional resources on lawn mower gas caps and related topics:

Are Lawn Mower Gas Caps Universal? from Lawn Mower Fixed: This article provides an overview of lawn mower gas caps and discusses the universality of different types of gas caps.

Are Lawn Mower Gas Caps Universal? from Lawn Mower Guru: This article covers the topic of lawn mower gas caps and provides guidance on how to determine whether a gas cap is universal or not.

Can You Use a Lawn Mower Without a Gas Cap? from Peak Yard: This article explores whether it’s possible to use a lawn mower without a gas cap and discusses the potential risks and drawbacks.


What is a lawn mower gas cap?

A lawn mower gas cap is a component that covers the fuel tank opening on a lawn mower. It is typically made of plastic or metal and helps to prevent fuel from spilling out of the tank during operation or transportation.

Are lawn mower gas caps universal?

Not all lawn mower gas caps are universal. Some are designed to fit specific models or brands of mowers, while others are more interchangeable. It’s important to consult your mower’s manual or do some research to determine whether a particular gas cap will fit your machine.

What happens if my lawn mower gas cap is loose or missing?

If your lawn mower gas cap is loose or missing, it can lead to problems such as fuel leaks, reduced performance, or difficulty starting the mower. It’s important to make sure that the gas cap is securely fastened before using your mower.

How do I clean my lawn mower gas cap?

To clean your lawn mower gas cap, you can use a damp cloth or a mild cleaning solution. Be sure to dry the cap thoroughly before reinstalling it on your mower.

Can I replace my lawn mower gas cap myself?

Yes, in many cases you can replace your lawn mower gas cap yourself. Make sure to choose a replacement cap that is compatible with your mower’s make and model, and follow any instructions provided by the manufacturer.