Best Fuel Tank Caps of 2026

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 20, 2026

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Fuel tank caps are an essential component of any vehicle's fuel system. They prevent fuel from spilling out of the tank and also keep dust and debris from entering the fuel system. These caps are designed to fit snugly onto the fuel tank opening and are typically made of durable materials such as plastic or metal. Some fuel tank caps come with additional features such as locks or built-in gauges to monitor the fuel level. They are available for various types of vehicles, including cars, trucks, and motorcycles, and come in a range of sizes and designs to suit different needs and preferences.

At a Glance: Our Top Picks

ACDelco GM OE Fuel Tank Filler Cap Cover #TOP 1
ACDelco GM OE Fuel Tank Filler Cap
ftb score rating icon 9.8
MOPAR Fuel Filler Cap Cover #TOP 2
MOPAR Fuel Filler Cap
ftb score rating icon 9.7
OEM Locking Fuel Cap for Ford F-150 Cover #TOP 3
OEM Locking Fuel Cap for Ford F-150
ftb score rating icon 9.5

Top 10 Fuel Tank Caps

#TOP 1

ACDelco GM OE Fuel Tank Filler Cap

GT231
Black
ACDelco GM OE Fuel Tank Filler Cap Cover
GM Genuine Parts GT231 (15763227) Fuel Tank Filler Cap

The ACDelco GM Original Equipment GT231 Fuel Tank Filler Cap provides a tight seal for your vehicle's fuel tank, reducing vapor emissions and preventing lost fuel. With an outside diameter of 2.9 inches, it helps you save trips to the gas station. It offers the quality, reliability, and durability of GM OE.

What We Like
Exact fit for listed vehicles
Easy installation process
Factory-like appearance
Effective EVAP code clearing
Good quality and fair price
What We Don't Like
Tether may be missing
Possible improper fit for some models
#TOP 2

MOPAR Fuel Filler Cap

52030387AA
natural
MOPAR Fuel Filler Cap Cover
Mopar 52030387AA CAP FUEL FILLER

The MOPAR Fuel Filler Cap is a genuine part specifically designed for your vehicle. Manufactured to meet specifications for fit, form, and function, this cap has a part number of 52030387AB and is categorized as a Fuel Tank Cap. It ensures a secure seal for your fuel tank, preventing fuel leakage and evaporation.

What We Like
Easy installation process
Perfect and tight fit
High quality material
Resolves dashboard warnings
OEM reliability
#TOP 3

OEM Locking Fuel Cap for Ford F-150

Ford
8U5Z-9C268-B
Black
OEM Locking Fuel Cap for Ford F-150 Cover
Ford Oem Factory Stock Genuine 2009 2010 2011 2012 2013 2014 F-150 F150 Locking Lock Gas Fuel Plug Cap W Keys for Capless Systems

This is an OEM locking fuel cap designed for Ford F-150 trucks. It is an auto part that weighs 0.06 kilograms and has a package dimension of 4.2 cm L X9.8 cm W X11.9 cm H. It is made in the United States and falls under the fuel tank caps category. This locking fuel cap is useful for securing the fuel tank and preventing theft or tampering. It is also convenient for those who have capless fuel systems.

What We Like
Perfect fit for Ford F-150
Added security against theft
Easy and quick installation
Keeps out water and dirt
Includes two stamped keys
What We Don't Like
Smaller than standard gas cap
Not factory-installed
#TOP 4

VP Racing Fuels 3042B Replacement Cap

3042
Black, Red
1 cap
VP Racing Fuels 3042B Replacement Cap Cover
VP Racing Fuels 3042B Replacment Cap for Plastic Utility Jug Black (1 Pack)

The VP Racing Fuel Cap is designed to replace the original cap on your plastic utility jug. It comes with a new O-ring already installed, ensuring a secure and tight fit to prevent leaks. For even better protection, you can apply grease to the O-ring, which helps create a stronger seal and extends the life of the cap. Keep in mind that international versions of this product might have different labeling or instructions. Overall, the VP Racing Fuel Cap offers a reliable and easy solution for maintaining your fuel jug’s safety and performance.

What We Like
Excellent sealing
No leaks
High build quality
Exact replacement fit
Fast shipping
What We Don't Like
Basic replacement part
#TOP 5

Cap & Shield Capless Gas Cap Cover for 2015-2020 Ford and Lincoln

Cap & Shield
2875-bk-1
Black
Black
Cap & Shield Capless Gas Cap Cover for 2015-2020 Ford and Lincoln Cover
Cap & Shield 2.875inch ID, Capless Gas Cap Dirt, Water & Dust Cover Compatible With 2015-2020 Ford and Lincoln Capless Gas Cap Fuel Filler Nozzle Cover

The Cap & Shield Gas Cap Cover is designed with a 2.875-inch inside diameter and a 1-inch length, making it a perfect fit for your Ford or Lincoln vehicles from 2015 to 2020. Made in America, this cover offers reliable quality you can trust. Crafted from high-temperature vinyl, it protects your fuel filler nozzle from dirt, water, and dust, helping to keep your gas tank clean and functioning smoothly. With this cover, you’ll enjoy easy maintenance and enhanced protection for your vehicle’s fuel system.

What We Like
Keeps out dirt and debris
Perfect fit on gas intake
Helps with evap error prevention
Simple and effective
What We Don't Like
Removal can be slightly difficult
Does not block all contaminants
#TOP 6

Subaru Fuel Tank Cap for Forester Legacy Outback WRX

42032FC000
Standard
Subaru Fuel Tank Cap for Forester Legacy Outback WRX Cover
Subaru Gas Tank Fill Cap for 1995-2002 Subaru Forester Legacy Outback Impreza WRX - 42032FC000 - Genuine OEM

The Subaru Fuel Cap is a genuine replacement part designed to fit several Subaru models, including the 1998-2002 Forester, 1995-2002 Legacy, 2000-2002 Outback, and the 2002 Impreza and WRX. This fuel tank cap helps maintain a secure seal on your gas tank, preventing fuel leaks and contamination. Using an original Subaru part ensures compatibility and reliable performance, so you won’t have to worry about fit issues. If you want to keep your vehicle running smoothly and protect your fuel system, this Subaru Fuel Cap offers a convenient and trustworthy solution.

What We Like
Perfect fit for Subaru models
Genuine OEM Subaru part
Fixes evap leak issues
Quick delivery
What We Don't Like
No clip included
Tight to unscrew initially
#TOP 7

MotoRad MGC-838 Fuel Tank Cap

MGC838
Black
MotoRad MGC-838 Fuel Tank Cap Cover
MotoRad- MGC-838 FUEL CAP (MGC838) Fuel Tank Cap Fits Toyota Camry 02–06 Prius 04–10 Tacoma 05–08 4Runner 03–09 Chevy Colorado 04–12 Impala 11–16 25828365 25828267 19432734 7730047010 7730033070

The MotoRad Fuel Cap is designed to fit a wide range of vehicle makes and models, ensuring you find the right fit for your car with ease. You can quickly confirm compatibility using Amazon's ConfirmedFit feature, saving you time and hassle. This fuel cap suits many popular Toyota, Lexus, Chevy, and other models, giving you peace of mind that it will work for your vehicle. Additionally, it serves as a direct OEM replacement, making it a reliable and convenient option to maintain your vehicle’s fuel system properly.

What We Like
Improved sealing over OEM
Resolves check engine light
Good price
Easy replacement solution
Identical fit for some models
What We Don't Like
No attachment cable
Fit issues for some vehicles
#TOP 8

Road King Non-Locking Aluminum Lever Diesel Cap for Peterbilt

FCAP-PB
natural
Road King Non-Locking Aluminum Lever Diesel Cap for Peterbilt Cover
Road King Truck Parts Non-Locking Aluminum Lever Style Diesel Fuel Cap for Peterbilt

The Road King Lever Diesel Cap is designed specifically for Peterbilt trucks that use this particular style of fuel cap. Made from heavy-duty die-cast aluminum, this cap is built to withstand the demands of diesel fuel use, ensuring durability and long-lasting performance. Its non-locking lever design makes it easy for you to open and close the cap quickly without the need for keys. Plus, it features a pressure relief system to help maintain safe fuel tank pressure, giving you peace of mind during your drive. This cap is a reliable replacement for Peterbilt’s original part #11-04859-100.

What We Like
Affordable price
Good quality
Perfect fit
Works as expected
#TOP 9

EZ-POUR Solid Base Gas Tank Cap B3

black
Gray
EZ-POUR Solid Base Gas Tank Cap B3 Cover
EZ-POUR Solid Base Cap Replacement Gas Tank Cap (Fine Thread) 2 PACK (B3)

The EZ-POUR Gas Tank Cap is designed to securely seal your gasoline cans, making it ideal for safe storage or transport of fuel. It offers a heavy-duty upgrade to older caps, ensuring durability and reliability so you don’t have to worry about leaks or spills. This cap helps prevent gasoline from spilling, giving you peace of mind when handling fuel. It’s especially useful if you own older cans from brands like Briggs and Stratton or Rubbermaid, as it fits many of these models perfectly. Keep your fuel contained and your workspace clean with this dependable replacement cap.

What We Like
Leak-proof sealing
Easy to install
Fits multiple gas can brands
Eliminates need for spouts
Durable construction
What We Don't Like
Compatibility varies by gas can model
Somewhat expensive for a cap
#TOP 10

Toyota Highlander 2007-2011 Fuel Cap

77300-06040
Black
Toyota Highlander 2007-2011 Fuel Cap Cover
Genuine Toyota Gas Cap Highlander 2007-2011 Genuine Toyota OEM Fuel Cap

The Toyota Fuel Cap is designed specifically for Highlander models from 2007 to 2011. It serves as a secure cover for your vehicle's fuel tank, helping to prevent fuel leaks and contamination. By using this genuine Toyota cap, you ensure a proper fit and reliable sealing, which can improve fuel efficiency and reduce harmful emissions. Installing this cap is simple and convenient, giving you peace of mind knowing your fuel system is well protected. Choosing an original part means you maintain the quality and performance expected from Toyota.

What We Like
Genuine Toyota replacement part
Fixes check engine light
Easy installation process
Perfect fit for Toyota vehicles
Longer lasting than generic caps
What We Don't Like
May not resolve all error codes
Buying Guide Image

Finding the Best Fuel Tank Caps to Meet Your Car's Needs

Introduction

Fuel tank caps are an often overlooked but crucial component of your vehicle. They serve to keep your fuel securely stored and prevent any potentially dangerous leaks. Choosing the right fuel tank cap can mean the difference between a smooth and efficient ride, and one that is constantly plagued by issues. In this article, we'll go over some of the key factors to consider when choosing a fuel tank cap for your vehicle.

Material

Fuel tank caps are typically made from one of two materials: plastic or metal. While plastic fuel tank caps are generally less expensive, they are also more prone to wear and tear and are less durable overall. On the other hand, metal fuel tank caps are more durable and less likely to break or fail, but they are also more expensive. Ultimately, the choice of material will depend on your personal preferences and budget.

Fit

One of the most important things to consider when choosing a fuel tank cap is whether it will fit your vehicle's fuel tank properly. Fuel tank caps come in a variety of sizes and styles, so it's important to make sure you choose one that is compatible with your vehicle. If the fuel tank cap is too small, it won't provide a secure seal and may cause fuel to leak. On the other hand, if the fuel tank cap is too large, it may not fit properly and could cause damage to your vehicle's fuel tank.

Type

Another important factor to consider when choosing a fuel tank cap is the type of fuel tank cap you need. There are two main types of fuel tank caps: vented and non-vented. Vented fuel tank caps allow air to flow in and out of the fuel tank, which is important for proper fuel evaporation and emissions control. Non-vented fuel tank caps, on the other hand, do not allow air to flow in or out of the fuel tank, which can cause fuel to expand and potentially cause damage to the fuel tank.

Brand

When it comes to fuel tank caps, brand can also be an important factor to consider. Some of the most well-known and trusted brands in the automotive industry include Stant, Gates, and ACDelco. These brands are known for producing high-quality fuel tank caps that are durable and reliable. However, there are also many other reputable brands to choose from, so be sure to do your research and choose a brand that you trust.

Price

Finally, price is another important factor to consider when choosing a fuel tank cap. Fuel tank caps can range in price from a few dollars to several hundred dollars, depending on the material, fit, type, and brand. Ultimately, the best fuel tank cap for you will be one that offers the features and performance you need at a price you can afford.

Conclusion

In conclusion, choosing the right fuel tank cap is essential for ensuring the safety and performance of your vehicle. Be sure to consider factors such as material, fit, type, brand, and price when choosing a fuel tank cap. With a little bit of research and careful consideration, you can find the perfect fuel tank cap for your vehicle.

Frequently Asked Questions (FAQs)

1. Are fuel tank caps universal?

Most fuel tank caps are universal and can fit in any car or SUV. However, there might be exceptions to this. Generally, fuel caps have a diameter of 55-57 mm or 58-60 mm, including the threads.

2. What size gas cap do I need?

To determine the correct size gas cap for your car, you can refer to your car's owner manual or contact your local auto parts store or dealership. They will have the knowledge and can provide you with the appropriate model and size gas cap for your specific vehicle.

3. Can I put any gas cap on my car?

It is not recommended to put any gas cap on your car. Using an ill-fitting gas cap can allow fuel vapors to escape and let in dirt and grime. This can potentially lead to an error in the emissions system and trigger the check engine light.

4. Can a bad gas cap reduce gas mileage?

Driving without a gas cap can result in poor fuel efficiency. Without a proper seal on the fuel filler, fuel can evaporate, causing a loss of gasoline. The smell of gas is a sign of fuel evaporation, which can ultimately lead to reduced gas mileage.

5. Does having a gas cap affect gas mileage?

Yes, the presence or absence of a gas cap can affect gas mileage. If you drive without a gas cap, fuel can evaporate from the tank without a proper seal, leading to diminished gas mileage. The gasoline smell indicates the evaporation of fuel, which can result in lower fuel efficiency.

Editor's Notes

During our fuel tank cap research, we found 24 fuel tank cap products and shortlisted 10 quality products. We collected and analyzed 26,822 customer reviews through our big data system to write the fuel tank caps list. We found that most customers choose fuel tank caps with an average price of $18.27.

The fuel tank caps are available for purchase. We have researched hundreds of brands and picked the top brands of fuel tank caps, including GM GENUINE PARTS, Mopar, Ford, VP Racing, Cap & Shield. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.

Fuel Tank Caps Comparison Table

#TOP1
#TOP2
#TOP3
#TOP4
#TOP5
#TOP6
#TOP7
#TOP8
#TOP9
#TOP10
Brand GM GENUINE PARTS Mopar Ford VP Racing Cap & Shield Subaru MotoRad Road King Truck Parts EZ-POUR Toyota
Color Black natural Black Black, Red Black Standard Black natural black Black
Material Alloy Steel Aluminum Metal Plastic Vinyl Metal, Plastic Aluminum Aluminum Plastic Plastic
Exterior Finish Milled Machined Machined Plastic High Gloss Vinyl - Machined Aluminum - Machined
Item dimensions L x W x H 4.5 x 3.6 x 2.5 inches - - 0.35 x 4.5 x 12.02 inches 2.88 x 2.88 x 1 inches - 3 x 3 x 3.25 inches 4.3 x 4.3 x 2.3 inches - -
Vehicle Service Type - Car, Truck, Van Car - - Car - - Lawn Mower Car
FTB Score
ftb score rating icon 9.8
ftb score rating icon 9.7
ftb score rating icon 9.5
ftb score rating icon 9.3
ftb score rating icon 9.3
ftb score rating icon 9.1
ftb score rating icon 9.1
ftb score rating icon 9.1
ftb score rating icon 8.9
ftb score rating icon 8.7
Where to Buy