Best Lawn Mower Gas Tanks of 2026

Name: Gas Fuel Tank Assembly for Stihl Trimmers
Brand: Cancanle

Toby Butcher

Last Updated: 5 Feb 2026

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

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 1

Gas Fuel Tank Assembly for Stihl Trimmers

9.8

Buy on Amazon Read Review

#TOP 2

3 Hole Fuel Tank Grommet for Lawnmowers

9.7

Buy on Amazon Read Review

#TOP 3

Tecumseh 36863 Genuine Fuel Tank for Engines

9.5

Buy on Amazon Read Review

Top 6 Lawn Mower Gas Tanks

#TOP 1

Gas Fuel Tank Assembly for Stihl Trimmers

Cancanle
4232 350 0411

Petrol Fuel Tank Assembly for Stihl FS38 FS45 FS46 FS55 KM55 Grass Trimmer Brushcutter

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.

9.8

Buy on Amazon Find on eBay

What We Like

Compatible with multiple Stihl models
Includes tank and cap
Improved fuel storage
Enhances trimmer performance

#TOP 2

3 Hole Fuel Tank Grommet for Lawnmowers

Acouto
Acouto14179

3 Hole Fuel Tank Grommet, 3 Hole Fuel Tank Grommet Replacement for Trimmer Lawnmower 13211546730 V137000030 Lawn Mower Fuel Tank Nozzle Accessories

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.

9.7

Buy on Amazon Find on eBay

What We Like

Durable rubber material
Easy installation
Fits multiple brands
Convenient replacement

#TOP 3

Tecumseh 36863 Genuine Fuel Tank for Engines

Tecumseh
36863

Tecumseh 36863 Lawn & Garden Equipment Engine Fuel Tank (Replaces 36752) Genuine Original Equipment Manufacturer (OEM) Part

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.

9.5

Buy on Amazon Find on eBay

What We Like

Durable construction
Genuine Tecumseh part
Easy installation
Fits specific engine models

#TOP 4

Briggs and Stratton 699374 Fuel Tank Replacement

Briggs & Stratton
699374
multi

Briggs and Stratton Genuine 699374 Fuel Tank

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.

9.5

Buy on Amazon Find on eBay

What We Like

Genuine OEM part
Perfect fit for multiple models
Reliable and durable
Enhances lawn mower performance

#TOP 5

Briggs & Stratton Fuel Tank Gasket 272409S

Briggs & Stratton
272409S
multi

Briggs and Stratton 272409S Gasket-Fuel Tank

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.

9.4

Buy on Amazon Find on eBay

What We Like

Genuine Briggs & Stratton product
Prevents fuel leaks
Enhances engine performance
Compatible with specific engines
Easy to install

#TOP 6

Fdit Replacement Fuel Gas Tank for HS81R Series

Fdit
Fditi6zxk3esdr220

Fuel Gas Tank, Gas Fuel Tank Assembly Brush Cutter Gas Fuel Tank Replacement for HS81R HS81T HS86R HS86T

The Fdit HS81R Fuel Tank is made from high-quality PC material, ensuring it is both reliable and durable for long-term use. Its high hardness means the tank resists damage, giving you peace of mind during tough gardening tasks. If your current tank is broken or old, this replacement fits perfectly and is easy to swap out, saving you time and effort. Additionally, the tank is simple to install, making it a practical choice for anyone needing a quick and efficient fuel tank solution for their brush cutter.

9.2

Buy on Amazon Find on eBay

What We Like

High-quality durable material
Resists damage well
Easy to replace
Simple installation

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.

Editor's Notes

During our lawn mower gas tank research, we found 184 lawn mower gas tank products and shortlisted 6 quality products. We collected and analyzed 28,088 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 £20.00.

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 Cancanle, Acouto, Tecumseh, Briggs & Stratton, Fdit.

Written by

Toby Butcher

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.