If you’ve ever dropped a bike on its side or laid it down on the ground while trying to make a quick repair, you’ve probably noticed a fuel leak. If you’ve ever tried to start a bike that was out of gas, you know how frustrating it is when fuel seeps out of the tank even when the cap is in place. To help prevent the spread of pollutants and the ignition of fuel if there is a leak, all fuel tanks must have caps on them.
So which fuel tank caps are best? We decided to find out by putting a wide range of caps to the test.
Read on to learn which fuel tank caps are best for your bike.
Our Editor’s Best Fuel Tank Caps Reviews
Bestseller No. 1
594061 Fuel Tank Cap for B&S Toro Craftsman Lawn Mower Gas Tank Caps Replacement
- 594061 Fuel Tank Cap for B&S Lawn Mower Gas Tank Caps
- Replacement Fuel Tank Cap
- If the gas caps become loose due to cracked, worn out, or stripped threads over time, the cap should be replaced. It is recommended that you use this cap with an additional gasket to make the cap fit more snugly.
- Includes tether to attach the tank cap to engine
- Package list: 1x Fuel tank cap, 1 x O-Ring
Bestseller No. 2
Transfer Tank Vented Fuel Diesel Tank Cap,Venting Pressure Fuel Gas Cap for 2 Inch Base,Diesel Transfer Fill Lid for Auxiliary/Storage Truck Tool Box-Only Include Fill Lid
- Fitment: Transfer tank vented cap replace for Dee Zee Fill-Rite venting pressure tank cap and fit for standard 2" NPT threaded tank bung base. Diesel tank cap works well for ground, farm, commercial and distillate tanks, such as transfer tank, fuel tank, gas tank, diesel tank, auxiliary fuel tank, mobile fuel tank and weather guard tank.
- Both Directions Vent: When loosing the cap, the transfer diesel tank cap vent pressure inside the tank to outside and release dangerous vapor build up to prevent over-expansion of the fuel tank. And allow air into the diesel transfer tank to prevent vacuum forming and collapse the tank when you draw out fuel.
- Prevent Leaking: Fuel transfer tank cap with spring loading and inside gasket is seal when tightly closing to prevent leaking and excess gas vapor venting even drive in road.
- Easy to Use: Align the transfer tank fuel cap with the notch, push down and clockwise twisting to tighten the diesel tank cap all the way. To remove transfer tank cap, counter-clockwise twist slowly to the notch to vent pressure. Push down and twist to lift pressure vent cap and remove.
- Heavy-duty Diesel Tank Cap: Made of high quality materials featuring waterproof and corrosion resistance to long term serve your diesel tank. The transfer tank vented cap package only includes a removable transfer tank fuel cap.
Bestseller No. 3
Transfer Tank Vented Fuel Cap w/Threaded Neck,Diesel Tank Cap with 2 Inch Base,Fuel Venting Pressure Gas Fill Lid for Diesel Transfer/Auxiliary/Storage Truck Tool Box
- Fitment: Transfer tank vented cap replace for Dee Zee Fill-Rite transfer tank cap and fit for standard 2" NPT threaded tank bung base. Diesel tank cap works well for ground, farm, commercial and distillate tanks, such as transfer tank, fuel tank, gas tank, diesel tank, auxiliary fuel tank, mobile fuel tank and weather guard tank.
- Both Directions Vent: When loosing the diesel tank cap, the venting pressure tank cap vent pressure inside the fuel tank to outside and release dangerous vapor build up to prevent over-expansion of the diesel fuel tank. And vented fuel cap allow air into the diesel transfer tank to prevent vacuum forming and collapse the tank when you draw out fuel.
- Added Security for Diesel Tanks Fuel: Lockable diesel fuel tank cap fit for 1/4" - 5/16" diameter shackle padlock (not included), which secure your fuel tanks and prevent costly oil fuel from theft,tampering, siphoning and vandalism. Just put a padlock in lock hole that is right on one of the tabs on the base and the tabs will hold the lock.
- Prevent Leaking: Transfer tank fuel cap with spring loading and inside gasket is seal when tightly closing to prevent leaking and excess gas vapor venting even drive in road.
- Easy to Use: Align the vented gas cap with the notch, push down and clockwise twisting to tighten the diesel tank cap all the way. To remove transfer tank cap, counter-clockwise twist slowly to the notch to vent pressure. Push down and twist to lift pressure vent fuel cap and remove.
Bestseller No. 4
Gates 31748 OE Equivalent Fuel Tank Cap
- genuine gates oe equivalent fuel cap
- Fit type: Vehicle Specific
- Fenderwell Fuel Caps are zinc-plated and dichromate dipped for superior corrosion resistance
- Model Number: 31748
Bestseller No. 5
Transfer Tank Vented Fuel Cap w/ 2 Inch Threaded Neck,Fuel Transfer Diesel Tank Cap,Venting Pressure Gas Fill Lid for Diesel Auxiliary/Storage Truck Tool Box
- Fitment: Transfer tank vented cap replace for Dee Zee Fill-Rite transfer tank cap and fit for standard 2" NPT threaded tank bung base. Diesel tank cap works well for ground, farm, commercial and distillate tanks, such as transfer tank, fuel tank, gas tank, diesel tank, auxiliary fuel tank, mobile fuel tank and weather guard tank.
- Both Directions Vent: When loosing the diesel tank cap, the venting pressure tank cap vent pressure inside the fuel tank to outside and release dangerous vapor build up to prevent over-expansion of the diesel fuel tank. And vented fuel cap allow air into the diesel transfer tank to prevent vacuum forming and collapse the tank when you draw out fuel.
- Added Security for Diesel Tanks Fuel: Lockable diesel fuel tank cap fit for 1/4" - 5/16" diameter shackle padlock (not included), which secure your fuel tanks and prevent costly oil fuel from theft,tampering, siphoning and vandalism. Just put a padlock in lock hole that is right on one of the tabs on the base and the tabs will hold the lock.
- Prevent Leaking: Transfer tank fuel cap with spring loading and inside gasket is seal when tightly closing to prevent leaking and excess gas vapor venting even drive in road.
- Easy to Use: Align the vented gas cap with the notch, push down and clockwise twisting to tighten the diesel tank cap all the way. To remove transfer tank cap, counter-clockwise twist slowly to the notch to vent pressure. Push down and twist to lift pressure vent fuel cap and remove.
Bestseller No. 6
Gas Cap, Fuel Cap For Kia soul,sedona,Forte,Sportage,Sorento,Spectra,Optima,Amanti,Cadenza,Rio & Hyundai Sonata,Elantra,Santa,Accent,Tucson,Azera,Entourage,Equus,Genesis,Genesis Coupe, Veloster
- 【FUEL CAP / GAS CAP TETHER COMPATIBLE WITH】31010-3L600U, 31010-3L600, Fuel Tank Filler Cap Is 100% Rigorously Tested Before Shipping. Check The Part Number To Confirm The Compatibility Before Purchase. GAS CAP For Kia & Hyundai Vehicles (Includ 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Years Series), Not All Of The Vehicles Are Listed, PLESE CHECK THE DROP DOWN BAR TO CHECK THE COMPATIBLE.
- 【COMPATIBLE WITH KIA】Gas Cap/ Fuel Cap Compatible with 2007-2009 Kia Amanti | 2009 Kia Borrego | 2014-2020 Kia Cadenza | 2010-2024 Kia Forte | 2010-2016 Kia Forte Koup | 2014-2018 Kia Forte5 | 2021-2025 Kia k5 | 2015-2020 Kia K900 | 2017-2022 Kia Niro | 2005-2020 Kia Optima | 2004-2006, 2012-2023 Kia Rio | 2006 Kia Rio5 | 2007-2010 Kia Rondo | 2005-2012, 2014-2021 Kia Sedona | 2021-2025 Kia Seltos | 2005-2009, 2011-2019 Kia Sorento | 2010-2025 Kia Soul | 2015-2019 Kia Soul EV | 2004-2009 Kia Spectra | 2005-2009 Kia Spectra5 | 2006-2022 Kia Sportage | 2018-2023 Kia Stinger | 2020-2022 Kia Telluride
- 【COMPATIBLE WITH HYUNDAI】Gas Cap Compatible with 2006-2022 Hyundai Accent | 2006-2017 Hyundai Azera | 2004-2020 Hyundai Elantra | 2013-2014 Hyundai Elantra Coupe | 2013-2020 Hyundai Elantra GT | 2007-2008 Hyundai Entourage | 2011-2016 Hyundai Equus | 2009-2016 Hyundai Genesis | 2010-2016 Hyundai Genesis Coupe | 2017-2022 Hyundai Ioniq | 2020-2025 Hyundai Palisade | 2005-2020 Hyundai Santa Fe | 2013-2018 Hyundai Santa Fe Sport | 2019 Hyundai Santa Fe XL | 2006-2023 Hyundai Sonata | 2005-2008 Hyundai Tiburon | 2005-2021 Hyundai Tucson | 2012-2017, 2019-2021 Hyundai Veloster | 2019-2022 Hyundai Veloster N | 2007-2012 Veracruz | 2020-2025 Venue
- 【EXCELLENT FUNCTION】High Quality Materials, Gas Cap, Fuel Cap Must Take 100% Inspected And Tested Multiple Times Before The Shipment, The Product Is Constructed Of Premium Material For Long Lasting Durability And Reliability. Direct Replacement, Easy Installation.
- 【REPLACE VEHICLES YEAR】Can Fit Vehicles Included Year 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020, Please Check The Year/Make/Model Carefully
Bestseller No. 7
Gas Cap,Fuel Cap For 2000-2019 Dodge Ram 1500 2500 3500 Charger Challenger Durango Journey Nitro Grand Caravan Caliber Dakota & Chrysler 200 300 Town and Country Aspen Sebring Jeep Wrangler JK Liberty
- 【FUEL CAP / GAS CAP COMPATIBLE WITH】52030377AB, 5278632AG, 52030377AA, Fuel Tank Filler Cap Is 100% Rigorously Tested Before Shipping. Gas Cap Compatible With Ram,Dodge,Chrysler,JEEP And More vehicles, Not All Of The Vehicles Are Listed, PLESE CHECK THE DROP DOWN BAR TO CHECK THE COMPATIBLE.
- 【COMPATIBLE WITH RAM & CHRYSLER】Gas Cap Compatible With 2000-2020 Ram 1500 2500 3500 | 2014-2020 Ram 4500 5500 | 2014-2021 Promaster 1500 2500 3500 | 2016-2020 Promaster City | 2011-2012 Ram Dakota | 2012,2015 Ram C/V, Compatible With 2011-2017 Chrysler 200 | 2005-2010 300| 2000-2004 300M | 1999-2000 Cirrus | 2000-2004 Concorde | 2000-2004 Intrepid | 2000-2002 Neon | 2001-2010 Pt Cruiser | 2001-2008 Sebring | 2007-2009 Aspen |2004-2008 Pacifica | 1998-2017 Town & Country | 2001-2003 Voyager
- 【COMPATIBLE WITH DODGE】Fuel Cap Compatible With 2008-2014 Avenger | 2008-2012 Caliber | 2008-2013 Challenger | 2006-2010 Charger | 2000-2010 Dakota | 2013-2016 Dart | 2011-2018 Durango | 2000-2004 Intrepid | 2009-2020 Journey | 2005-2008 Magnum | 2000-2005 Neon | 2000-2006 Stratus | 2007-2011 Nitro | 2008-2010 Viper | 1998-2020 Grand Caravan | 2001-2007 Caravan | 2000-2010 Ram 1500 2500 3500
- 【COMPATIBLE WITH JEEP】Compatible With 2003-2020 JEEP Wrangler JK, 2003-2006 Wrangler TJ, 2002-2012 Liberty, 2008-2018 Compass, 2001-2019 Grand Cherokee, 2006-2010 Commander, 2000-2017 Cherokee, 2008-2017 Patriot, Gas Cap Compatible With 2000-2001, 2014-2017 Cherokee | 2008-2018 Compass | 2011-2019 Grand Cherokee | 2008-2018 Patriot | 2014-2016 Promaster 1500 2500 3500
- 【EXCELLENT FUNCTION】Gas Cap Must Take Inspected And Tested Multiple Times Before The Shipment, Fuel Tank Filler Cap Is Constructed Of Premium Material For Long Lasting Durability And Reliability. Direct Replacement, Easy Installation.
Bestseller No. 8
Gas Cap,Fuel Cap For 2003-2018 Jeep Wrangler JK TJ Liberty Patriot Cherokee Compass Commander Grand Cherokee,Dodge Ram 1500 2500 Journey Dakota Dart Durango Caravan,Chrysler 200 300 Town and Country
- 【FUEL CAP / GAS CAP COMPATIBLE WITH】52100552AG, 52030387AB, 52030387AA, Fuel Tank Filler Cap Compatible With Jeep Wrangler Is 100% Rigorously Tested Before Shipping. Check The Part Number To Confirm The Compatibility Before Purchase.
- 【COMPATIBLE WITH JEEP MODELS】Gas Cap/ Fuel Cap Compatible With 2003-2018 Jeep Wrangler JK, Compatible With 2003-2006 Jeep Wrangler TJ, 2002-2012 Liberty, 2008-2017 Patriot., 2000-2017 Cherokee, 2008-2018 Compass, 2001-2019 Grand Cherokee, 2006-2010 Commander (Includ 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Models)
- 【COMPATIBLE WITH DODGE & CHRYSLER】Gas Cap/ Fuel Cap Compatible With Dodge Ram 1500 2500 3500 | 2008-2014 Avenger | 1998-2021 Grand Caravan | 2009-2021 Journey | 2001-2007 Caravan | 2008-2012 Caliber | 2006-2010 Charger | 08-13 Challenger | 2000-2010 Dakota | 13-16 Dart | 01-18 Durango | 2000-2004 Intrepid | 2005-2008 Magnum | 2000-2005 Neon | 2007-2011 Nitro & Compatible With Chrysler 200 300 | 2007-2009 Aspen | 1998-2017 Town And Country | 2004-2008 Pacifica | 2001-2008 Sebring And More.
- 【Superiority】Gas Cap Compatible With Jeep Wrangler is easy Installation. High Reliability. It Could Correctly Replace The Original Part.Please Check The Detailed Description And Oe Part Number To Confirm The Compatibility Before Purchase.Thank You!
- 【Replace Vehicles Year】Can Fit Vehicles Included Year 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021,Please Check The Year/Make/Model Carefully
Bestseller No. 9
The Flow Security Systems Vented Locking Fuel Tank Cap | Secures Transfer & Above Ground Commercial Fuel Tanks | Prevents Theft & Fuel Vandalism | FSS 377M | Male 2" Std Thead
- PREVENT UNAUTHORIZED USE: The Flow Security Systems FSS-377 vented fuel cap is a quick and inexpensive way to safeguard costly fuel and oil from theft, tampering, siphoning and vandalism. The FSS-377 is perfect for anyone who want to secure their fuel tanks.
- MULTIPLE USES: The FSS-377 is designed for use on mobile fuel transfer tanks, as well as above ground commercial tanks.
- COMPATIBILITY: Fits all 2'' male threaded tanks. Cap is secured to adapter with any 5/16th diameter shackle padlock (not included).
- INSTALLATION: The adapter is firmly connected to the tank via a wrench. It can be permanently set in place with use of a thread locker.
- HEAVY DUTY: Manufactured to the highest standards and built to last a lifetime. Cap and adapter are made from high quality carbon steel, CNC machined for precise fit and function, and case hardened for durability and resistance to drilling and damage.
Bestseller No. 10
bansdans 2Pcs 11-04859-100 4" Locking Diesel Fuel Cap, Lever-Style Aluminum Fuel Tank Cap with Key Fit for 1972-2017 Peterbilt 330, 379, 389, 579, 587 Trucks, OE# 11-04859-200, 572.1015, 600212
- Compatibility:The locking diesel fuel tank cap is Compatible with Peterbilt trucks from 1995 to 2016, including models such as 330, 335, 337, 340, 348, 352, 357, 359, 362, 365, 367, 375, 377, 378, 379, 384, 385, 386, 387, 388, 389, 567, 579, and 587. Ensure a perfect fit for your vehicle with seamless installation
- Replaces Part Numbers:The cap features a lever-style locking mechanism with a pressure relief design and is non-vented, and it does not have any threaded components. replaces part numbers 11-04859-100, 11-04859-200，572.1015, 600212
- Enhanced Safety Design:Featuring an integrated pressure release mechanism, this cap allows for easy opening during refueling, preventing pressure buildup. The locking mechanism effectively prevents fuel leakage, ensuring safe use. The lever-style lock design is tool-free and user-friendly for quick operation
- Complete Packaging and Accessories:Each fuel tank cap includes a pair of 4-inch locking caps, rubber sealing rings, a 13-inch safety chain, and 4 matching keys. This comprehensive package is designed for straightforward replacement and installation, allowing any user to complete the task without the need for additional tools
- Important Note:The two fuel tank caps are equipped with independent locking mechanisms. Please note that their keys are not interchangeable—each key is exclusively for its matching cap, ensuring enhanced security for your fuel storage
Best Fuel Tank Caps Buying Guide
Before choosing the best fuel tank caps you should consider following options:
1. Fuel Tank Cap Types: Fuel tank caps are available in two types: rubber and plastic. The most common caps are made from plastic.
Plastic caps are more affordable, lighter and easier to maintain. Rubber caps, on the other hand, last longer and can resist damage from ultraviolet rays.
2. Size: Fuel tank caps come in standard sizes, which makes it easy to find replacements. Note the tank cap size before buying new caps.
3. Durability: Fuel tank caps are exposed to harsh conditions, so you need to get something that can withstand abuse.
Look for caps made from durable materials, such as stainless steel. Caps with rubber gaskets are also a good choice because they won’t break down as quickly as plastic ones.
4. Ease of Use: Tank caps are required to contain fuel, so they have to be easy to open and close.
Consider fuel tank caps that have easy-to-use locking mechanisms. Caps with rubber gaskets are also easier to close because they create a tight seal.
5. Cost: Fuel tank caps are available in different price ranges, so you can get something that suits your budget.
What else you should know about fuel tank caps
1. What is the purpose of a fuel tank cap?
The purpose of a fuel tank cap is to seal the opening of the fuel tank. This helps to prevent fuel leakage and evaporation, and keeps dirt and water out of the tank.
2. How does a fuel tank cap work?
A fuel tank cap works by sealing the fuel tank and preventing fuel vapors from escaping.
3. What are the benefits of using a fuel tank cap?
There are several benefits to using a fuel tank cap:
1. It helps to prevent fuel evaporation, which can lead to loss of fuel and decreased gas mileage.
2. It helps keep water and other contaminants out of the fuel tank, which can clog fuel filters and lead to engine problems.
3. It helps prevent fuel leaks, which can be dangerous and costly.
4. What are the drawbacks of using a fuel tank cap?
Some drawbacks of using a fuel tank cap include the potential for the cap to leak, the cap not sealing properly, and the cap not fitting snugly on the fuel tank.
5. What are the different types of fuel tank caps available?
Some common types of fuel tank caps are vented, non-vented, locking, and threaded.
Conclusion
On the market, there are numerous best fuel tank caps. Hopefully, the list of the top ten best fuel tank caps will save you time researching and deciding on the best one for you.