Gas Caps (10 items found)

Gas-powered outdoor tools may be rugged and reliable, but their moving parts handle a lot of stress with frequent use. For example, a lawn mower gas cap is a deceptively simple part, but regularly screwing and unscrewing it to refill your tank will eventually take its toll. Find the replacement fuel caps for your gas-powered equipment at Ace Hardware.

Are All Gas Caps Vented?

The primary function of a gas cap is to seal the fuel tank from outside air, preventing spills, fuel contamination and reducing fuel evaporation. However, unlike a regular cap on a bottle, a gas cap must allow air to enter the tank as gasoline is burned by the engine. This venting process is crucial for maintaining a smooth operation of gas-powered equipment like lawn mowers or chainsaws.

While not all gas caps are vented, vented caps are essential for many applications. They let air back into the tank to refill the space left by the consumed fuel, ensuring proper pressure and preventing vacuum formation. Over time, the one-way seal in vented caps can wear out, leading to gasoline leaks. When this happens, replacing the gas cap is necessary to restore proper function and prevent fuel loss.

When Should You Replace Your Gas Cap?

If you smell gasoline while using your outdoor power equipment, it's a warning sign you should never ignore. The problem could be with the fuel line, but a faulty gas cap or one that doesn't correctly fit your lawn mower or other outdoor equipment can be the culprit. An even worse sign is when the area around the fuel cap is wet to the touch, or if fuel visibly spouts from the tank when you increase engine power.

In all these cases it's important to prevent the leaking fuel from catching fire on the hot exterior of the engine. Use a replacement gas cap for an easy and economical way of fixing this common problem.

Are Gas Caps Universal?

Lawn mower gas caps are not universal, meaning what fits one lawn mower may not fit another. When you need to fix a damaged gas cap, it's important to buy the correct design for your equipment’s make and model. The first point to look out for is the diameter of the fuel cap, which can range from a few inches depending on the type of tool and the size of its fuel tank.

However, gas caps also come in winged or threaded designs, and the two types aren't interchangeable. Although many residential power tools use a plastic threaded gas cap, it's important to check your model before buying a replacement to make sure it fits.

Shop Gas Caps Near You at Ace Hardware

Get your gas-powered tools back in working order with a replacement fuel cap near you at Ace. Our knowledgeable associates can help you find the right fit for your needs. You can also explore our range above using the price options on the left, narrowing your choices from brands like Briggs & Stratton, Arnold and others.  

Order online and enjoy fast shipping to your home. Need to upgrade your outdoor power equipment? Shop hedge trimmers, leaf blowers and more to help keep your backyard and lawn in top shape.