Best Lawn Mower Gas Tanks of 2025

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Lawn mower gas tanks are an essential part of any petrol-powered lawn mower, providing a secure and reliable storage solution for the fuel needed to keep the mower running smoothly. Available in a range of sizes and designs to suit different types of mowers, these tanks are typically made from durable materials such as plastic or metal and feature a sealed cap to prevent fuel leaks. While many gas tanks come as standard with new mowers, replacement tanks can be purchased separately for those in need of a replacement or an upgrade.
At a Glance: Our Top Picks
Top 10 Lawn Mower Gas Tanks
Briggs and Stratton 699374 Fuel Tank Replacement
The Briggs and Stratton Fuel Tank is a genuine replacement part designed to provide a perfect fit. As a new OEM part, it ensures reliability and performance for your lawn mower. This fuel tank replaces several older models, including Briggs # 693377 and 495224, making it a versatile choice for your needs. By opting for this genuine part, you can enhance your lawn mowing experience with peace of mind, knowing that it meets the high standards set by Briggs & Stratton.
Tecumseh 36863 Genuine Fuel Tank for Engines
The Tecumseh 36863 Fuel Tank is a brand new, genuine part designed for specific Tecumseh engine models. This durable fuel tank is essential for maintaining your lawn and garden equipment, ensuring that it functions efficiently. As an unopenrd product, you can be confident in its quality and reliability. Being an OEM part, it guarantees compatibility with your engine, making installation straightforward and hassle-free.
TOPEMAI Fuel Tank for Honda Engines
The TOPEMAI Fuel Tank is designed for Honda GX340 and GX390 engines, offering a generous capacity of 6.5 litres. This tank is also compatible with GX240 and GX270 models, though it is slightly larger than the original. With multiple replacement part numbers, it ensures easy compatibility. Users should note that it is not suitable for fuels with over 10% ethanol, and filling it beyond three-quarters full may lead to leaks, making it essential for proper use and maintenance.
Briggs & Stratton Fuel Tank Gasket 272409S
The Briggs & Stratton Gasket is a genuine replacement part designed for most 3 - 5 Gross HP Horizontal (Pulsa Jet) 135000 Briggs & Stratton engines. This fuel tank gasket ensures a proper seal, preventing leaks and maintaining optimal engine performance. By using this gasket, you can enhance the efficiency of your lawn mower, helping it to run smoothly. Additionally, this product is tailored for specific engines, ensuring compatibility and ease of installation, allowing you to get back to mowing with minimal hassle.
Briggs & Stratton 590949 New Fuel Tank
The Briggs & Stratton Fuel Tank is a new OEM gas fuel tank designed to replace older models, specifically 590477 and 796489. As a genuine Briggs & Stratton part, it ensures quality and compatibility for your lawn mower. This replacement tank is essential for maintaining optimal fuel flow, helping you achieve efficient mowing. By using this tank, you can avoid leaks and disruptions, providing you with peace of mind while you work on your garden.
Gas Fuel Tank Assembly for Stihl Trimmers
The Stihl Fuel Tank Assembly is designed to fit a wide range of Stihl models, including FS38, FS45, and KM55. With part number 4232 350 0411, this assembly includes both a fuel tank and a tank cap, ensuring you have everything you need for efficient operation. By replacing your old tank with this new assembly, you can enjoy improved fuel storage and reliable performance. It is essential for keeping your trimmer running smoothly, allowing you to focus on your gardening tasks without interruptions.
Fuel Gas Tank Grommet and Valve Set
The JRL Fuel Shut Off Valve is designed for use with Generac, Coleman, Craftsman, and similar equipment. It fits a 33/64" fuel tank hole, ensuring a snug and secure fit. The fuel shut off valve requires a 1/4" ID fuel line, providing compatibility with various fuel systems. This package includes one fuel shut off valve and one fuel tank bushing grommet, making it convenient for your fuel valve service needs. You will appreciate the ease of installation and reliability this product offers, enhancing your equipment's performance.
3 Hole Fuel Tank Grommet for Lawnmowers
The Acouto Fuel Tank Grommet is an essential replacement part for your lawnmower, designed with a 3-hole tank feedthrough featuring a 5 mm hole diameter. Made from high-quality rubber, it is both wear-resistant and durable, ensuring long-lasting use. You will find that it can be easily installed, making the replacement process hassle-free. This grommet is compatible with various models, including Stihl, Husqvarna, and Echo, allowing for convenient upgrades to your equipment.
Briggs & Stratton 591947 Fuel Tank for Engines
The Briggs & Stratton Fuel Tank is a genuine OEM part designed for various lawn and garden equipment engines. It holds the essential fuel needed for your engine to operate efficiently. This part is compatible with multiple models, ensuring you can find the right fit for your equipment. When installing the tank, it is crucial to work in a well-ventilated area to ensure safety. This attention to detail makes the installation process smoother and safer for you.
Oregon 07-392 Fuel Tank Bushing for 33/64-inch
The Oregon 07-392 Bushing is designed to fit various models, including the 07-390, 07-391, and 07-404, ensuring compatibility with your equipment. This bushing fits a 33/64-inch diameter fuel tank, making it an ideal choice for those seeking a precise fit. Additionally, it is important to note that international products may have different specifications, so be aware of any variations. This product provides a reliable solution for maintaining your lawn mower's fuel system, enhancing its overall performance and longevity.
Frequently Asked Questions (FAQs)
1. How big is a lawn mower fuel tank?
A medium sized riding mower may hold two gallons, while a larger lawn tractor may hold three to four gallons. Some commercial riding mowers with oversized fuel tanks may hold five to ten gallons of gasoline.
2. Can you repair a lawn mower gas tank?
Black plastic gas tanks are found on a variety of lawn mowers by all makes and manufacturers. Although tough and resilient, through accidents or abuse, they can crack, split, break or spring a leak. However, when this happens, they can be permanently repaired.
3. How long can you keep gas in lawn mower?
How long can gas sit in a lawn mower? Depending on the gasoline formula it can degrade in as little of 30 days. Properly treated gasoline can stay good for up to a year. To prevent this from happening, you have two choices: empty the gas tank or add a fuel stabilizer.
4. What happens when I overfill my lawn mower gas tank?
Causing Overfill Leaks Filling your lawnmower's fuel tank all the way to the top can cause gasoline to seep out of the cap vent hole. While this technically is not a leak, it may look like one, even appearing to come from the tank's seam.
During our lawn mower gas tank research, we found 104 lawn mower gas tank products and shortlisted 10 quality products. We collected and analyzed 20,951 customer reviews through our big data system to write the lawn mower gas tanks list. We found that most customers choose lawn mower gas tanks with an average price of £28.40.
The lawn mower gas tanks are available for purchase. We have researched hundreds of brands and picked the top brands of lawn mower gas tanks, including Briggs & Stratton, Tecumseh, TOPEMAI, Cancanle, JRL. The seller of top 1 product has received honest feedback from 390 consumers with an average rating of 4.9.

Toby Butcher is a Horticulturist, and he earned his title as a Master Gardener in 2016. Toby has acquired a 25-year experience as a home gardener planting, designing, grooming vegetables and flowers. He is the leader of a plant group in Durham. Toby owns a blog where he publishes articles on growing and growing your flowers at home, in a vase, or in a garden.