Best Car Fuel Tank Caps of 2025

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Car fuel tank caps are an essential component of any vehicle's fuel system. They provide a secure seal to prevent fuel from spilling out of the tank and protect it from dirt and debris. Fuel tank caps come in various designs and sizes to fit different types of vehicles. They are made of durable materials such as plastic or metal and are easy to install. Investing in a high-quality fuel tank cap can help ensure the safety and efficiency of your vehicle's fuel system, and reduce the risk of fuel theft.
At a Glance: Our Top Picks
Top 10 Car Fuel Tank Caps
AA Universal Emergency Fuel Cap for All Cars
The AA Emergency Fuel Cap is a versatile solution for your vehicle’s fuel tank needs. Its universal fit means you can use it on any car without the hassle of trimming. Made from flexible material, the lid easily expands or contracts to ensure a snug fit. This not only provides peace of mind but also enhances convenience, as you can quickly replace your fuel cap in an emergency. Additionally, being reusable makes it an economical choice for everyday drivers.
BIAREN Coolant Tank Cap for Vauxhall/Opel
The BIAREN Coolant Tank Cap is designed to fit a wide range of Vauxhall and Opel models, including Corsa, Astra, and Insignia. This compatibility ensures that you can easily replace your old cap without worrying about fit issues. Made from durable plastic, it promises longevity and reliability. Additionally, the product comes with OEM numbers, allowing you to verify its suitability for your vehicle before purchasing. This attention to detail provides you with peace of mind and a hassle-free shopping experience.
BIAREN Windscreen Washer Bottle Cap for Vauxhall
The BIAREN Washer Bottle Cap is designed to fit a variety of Vauxhall and Opel models, ensuring compatibility with vehicles such as the Astra, Corsa, and Insignia. With its OEM numbers, you can easily verify its suitability for your existing part. This product is a single piece, making installation straightforward. Checking the item photo and OEM number of your old part before purchasing ensures you select the correct cap, providing you with peace of mind and convenience.
febi bilstein 40722 Radiator Cap for Coolant Tank
The febi bilstein Radiator Cap is an original spare part made in Germany, ensuring high-quality performance. It has specific dimensions, with a height of 32 mm and an outer diameter of 87 mm, which means it fits perfectly in your vehicle. With an opening pressure of 1.5 Bar, this cap helps maintain optimal coolant levels, protecting your engine from overheating. Weighing only 0.064 kg, it is lightweight and easy to handle, making installation simple for you.
febi bilstein 27288 Fuel Filler Cap with Strap
The febi bilstein Fuel Filler Cap is an original part designed to match OE quality, ensuring reliability for your vehicle. Weighing just 0.081 kg, it is a lightweight yet sturdy choice. This cap is compatible with a range of models, including various VW, Skoda, and Audi vehicles, making it versatile for many users. Additionally, the cap features a securing strap, which can help prevent loss and provide peace of mind when filling up your tank.
febi bilstein Radiator Cap for Coolant Tank
The febi bilstein Radiator Cap is an original spare part made in Germany, ensuring high quality and reliability. By checking the vehicle identification, you can confirm compatibility, which helps you avoid purchasing the wrong cap. This cap features an outside thread of M62 x 3.5 and an opening pressure of 2.1 Bar, offering optimal performance for your vehicle's coolant system. Weighing only 0.060 kg, it is lightweight, making installation and handling easier for you.
URAQT Fuel Tank Cap Tether for VW Audi
The URAQT Fuel Cap Tether is designed to be a direct replacement for your old or damaged fuel cap tether. It is compatible with VW Bora and Audi Passat models, ensuring a perfect fit. The OEM number 1J0201550A makes it easy to identify. Manufactured with high-quality materials, this product promises maximum durability, allowing you to enjoy stable performance over time. By using this replacement, you can enhance the functionality of your fuel tank cap, making refuelling a hassle-free experience.
KASturbo Fuel Tank Cap for BMW & Mini
The KASturbo Fuel Cap is designed to fit various BMW and Mini Cooper models, ensuring compatibility with a range of vehicles from 2002 to 2018. Made from high-quality materials, it guarantees durability, giving you peace of mind during your journeys. Its professional engineering provides excellent adaptability, making installation straightforward. With a focus on providing a reliable seal, this fuel cap helps maintain your car's fuel efficiency, thus enhancing your overall driving experience.
EMSea Fuel Cap Seal for Vauxhall Models
The EMSea Fuel Cap Seal is an ideal replacement for various Vauxhall models, including Astra, Corsa, and Zafira. It features a compatible design with part numbers 13348085 and 90528990, ensuring a proper fit. The internal seal effectively creates a barrier between the fuel cap and the tank neck, preventing leaks and maintaining fuel integrity. Installation is simple, allowing you to easily replace damaged parts. Made from durable rubber, this fuel cap seal promises long-lasting performance, giving you peace of mind while driving.
BIAREN Windscreen Washer Bottle Cap for Ford Focus Mk3
The BIAREN Ford Focus Mk3 Cap is designed specifically for the Ford Focus Mk3 models from 2011 onwards, ensuring a perfect fit. It comes with OEM numbers 1708196 and BM5117632AA, helping you easily identify compatibility with your vehicle. The cap is presented in a vibrant blue colour, adding a touch of style to your car's appearance. Before purchasing, you can check the item photo and OEM number of your old part, ensuring that you make the right choice for your needs.
Frequently Asked Questions (FAQs)
1. Are fuel tank caps universal?
There are different types of gas caps, ranging from slow-release to cap-less. However, the gas caps for all types of vehicles are made to be universal and can fit to cover the gas tank in any vehicle.
2. Are fuel caps a standard size?
Yes they are, all cars and SUV's have a universal gas tank cap size. Just because all gas caps fit every car, does not mean that the car's sensors will work with every gas cap.
3. Can you drive without a fuel cap?
Driving without your gas cap will not harm your engine. Driving without your gas cap will not cause you to lose fuel. There is a flapper valve built into your car, and it will stop fuel from flowing out of your tank.
4. How much is it to replace a fuel cap?
The average cost for gas cap replacement is between $94 and $99. Labor costs are estimated between $18 and $22 while parts are priced at $76. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed.
During our car fuel tank cap research, we found 237 car fuel tank cap products and shortlisted 10 quality products. We collected and analyzed 26,507 customer reviews through our big data system to write the car fuel tank caps list. We found that most customers choose car fuel tank caps with an average price of £6.47.
The car fuel tank caps are available for purchase. We have researched hundreds of brands and picked the top brands of car fuel tank caps, including AA, BIAREN, febi bilstein, URAQT, KASturrboo.

Joseph is a seasoned writer who's also passionate about automotive. His passion for automotive care and maintenance fuels his drive for more knowledge in the field. He currently resides in Middlesbrough, where he finds time to write informative contents on automotive. His automotive related articles are quite popular in journals around the world. Joseph continues to use his wealth of experience in the industry to create helpful guides on automotive.