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5 Best Fuel Tank Caps of 2026

Last Updated - 2026/06/24

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Fill-Rite

Fill-Rite FRTCB Vented Fill Cap with 2" Base

Fill-Rite

CA$92.20

More Details
Main highlights
- Replacement fill cap
- 2" NPT base
CA$92.20
2

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Flow Security Systems

Flow Security Systems | Vented Locking Fuel Tank Cap | For Transfer Tanks & Above Ground Commercial Tanks | Prevents Theft & Fuel Vandalism | Secures Fuel Tanks | FSS 377M | Male 2" Std Thead

Flow Security Systems

CA$73.46

More Details
Main highlights
- SEALED SYSTEM: Inside gasket provides sealing and prevents spillage of the tank contents. May be susceptible to some spillage during the very brief venting time period.
- 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.
- DURABLE: This heavy duty cap is made from high quality, CNC machined carbon steel with silver zinc-plating for corrosion resistance and durability.
- COMPATIBILITY: Fits all 2'' male threaded tanks. Cap is secured to adapter with any 5/16th diameter shackle padlock (not included).
- BUILT-IN VALVE: The FSS-377 uses a built-in valve to equalize pressure and vacuum. The valve allows the tank to vent when pressure reaches 1.5 psi and releases vacuum at 1.5 oz
CA$73.46
3

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

HEMRUNK

Transfer Tank Vented Cap with Iron Base Kit Diesel Fuel Tank Cap with 2" NPT Threaded Neck for Fuel Transfer tank Diesel Transfer Tank Vented Fuel Storage Tank Gold

HEMRUNK

CA$43.67

More Details
Main highlights
- Wide Application: Fits for transfer tank, diesel tank, fuel tank, gas tank, mobile fuel tank auxiliary fuel tank and weather guard tank.
- Ventilation: Relaxing the vent cap allows the pressure in the tank to be vented, preventing the transfer tank from over-expanding. The vent cap also allows air to enter the diesel fuel tank, preventing a vacuum from forming inside the tank.
- Leak-Proof Design: The iron base fits snugly into the vented cap. And the vented cap have springs and seals inside to prevent leakage of fluids inside the tank.
- Easy to Use: Installation is accomplished by aligning the cover with the groove, pressing down and rotating clockwise. Removal is accomplished by pressing the cover down and rotating it counterclockwise.
- Applicable: This tank vented cap replaces the D-ee Zee F-ill-Rite transfer tank cap. Comes with a 2'' NPT threaded tank plug base.
CA$43.67
4

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

PANDOUTO

Vented Diesel Fuel Cap for Transfer Tank - 2 Inch Base, Vented Storage Tank Cap

PANDOUTO

CA$44.79

More Details
Main highlights
- Security: Our transfer tank vented cap with threaded neck protects your tank against fuel theft. It also needs to fit a 1/4 "-5/16" diameter latch padlock (not included) and the tank will be securely locked. Fuel delivery tank covers with spring-loaded and internal sealing gaskets are sealed when tightly closed, preventing leaks and excess gas vapor emissions
- Product Features: When the tank cap is loosened, the pressure inside the tank cap is discharged to the outside of the tank to release dangerous vapor accumulation and prevent the tank from overexpanding. Allow air into the diesel delivery tank to prevent the formation of a vacuum and collapse of the tank when pumping oil
- Installation: 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
- Fits For: Transfer Tank Vented Fuel Cap replace for Dee Zee Fill-Rite transfer tank cap and Compatible with standard 2" NPT threaded tank bung base. 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
- After-Sales Service: Transfer Tank Vented Fuel Cap are fully tested before shipment to ensure product durability. 6 months warranty is provided. If you have any difficulties and needs, you can contact us at any time, we will reply to you within 24 hours, we will be happy to serve you
CA$44.79
5
Best Value

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

ROVIKE

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

ROVIKE

CA$9.93

More Details
Main highlights
- 【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.
- 【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.
- 【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 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
- 【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
CA$9.93

5 Best Fuel Tank Caps of 2026

Fill-Rite FRTCB Vented Fill Cap with 2" Base

Flow Security Systems | Vented Locking Fuel Tank Cap | For Transfer Tanks & Above Ground Commercial Tanks | Prevents Theft & Fuel Vandalism | Secures Fuel Tanks | FSS 377M | Male 2" Std Thead

Transfer Tank Vented Cap with Iron Base Kit Diesel Fuel Tank Cap with 2" NPT Threaded Neck for Fuel Transfer tank Diesel Transfer Tank Vented Fuel Storage Tank Gold

Vented Diesel Fuel Cap for Transfer Tank - 2 Inch Base, Vented Storage Tank Cap

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

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