Automotive

The Best Gas Caps

1 min read WeKompare Editorial Team Products verified: September 1, 2026 10 products compared

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A properly functioning gas cap is crucial for your vehicle's emissions system and fuel efficiency. A loose or damaged cap can allow fuel vapors to escape, leading to a check engine light and reduced MPG. This guide will help you understand the key factors in selecting the right replacement.

No. 1
Gas Cap,Fuel Cap for 2000-2019 Dodge Ram 1500 2500 3500 Charger Challenger
Gas Cap,Fuel Cap for 2000-2019 Dodge Ram 1500 2500 3500 Charger Challenger
  • 【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...
  • 【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...
  • 【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...
  • 【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...
  • 【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.
$7.80
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No. 2
Gas Cap,Fuel Cap for 2003-2018 Jeep Wrangler JK TJ Liberty Patriot Cherokee
Gas Cap,Fuel Cap for 2003-2018 Jeep Wrangler JK TJ Liberty Patriot Cherokee
  • 【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...
  • 【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...
  • 【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
$8.87
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No. 3
Gas Cap,Fuel Cap for Kia Hyundai Soul Sonata Sorento Optima Elantra Forte
Gas Cap,Fuel Cap for Kia Hyundai Soul Sonata Sorento Optima Elantra Forte
  • 【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...
  • 【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...
  • 【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...
  • 【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...
  • 【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
$7.87
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No. 4
Gas Cap,Fuel Cap for Toyota Camry 4Runner RAV4 Avalon Corolla Highlander
Gas Cap,Fuel Cap for Toyota Camry 4Runner RAV4 Avalon Corolla Highlander
  • 【COMPATIBLE WITH】Gas Cap, Fuel Cap Replaces 77300-06040, 7730006040, Gas Cap Is 100% Rigorously Tested Before Shipping. Check The Part Number To Confirm The Compatibility Before Purchase.
  • 【COMPATIBLE WITH TOYOTA VEHICLES】Gas Cap Compatible With 2007-2011 Camry (Exclude Calif or Hybrid Spec) | 2012-2013 Camry (Exclude PZEV Spec To 12/2012) | 2006-2012 RAV4 | 2010-2015 4Runner | 2007-2012 Avalon | 2005-2013 Corolla (From 08/2005 Exclude...
  • 【COMPATIBLE WITH LEXUS VEHICLES】Gas Cap Compatible With 2007-2012 ES350 | 2007-2011 GS350 | 2007 GS430 | 2008-2011 GS460 | 2010-2015 GX460 (To 08/2014) | 2008-2014 IS F | 2006-2014 IS250 | 2006-2014 IS350 | 2006 LS430 (From 07/2005) | 2007-2012 LS...
  • 【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...
  • 【Product Operation Manual】 If The Check Engine Light Appears, Remove The Fuel Cap, Inspect The O-Ring, Align The Cap Straight With The Filler Neck, Then Tighten Clockwise Until You Hear 2–3 Clicks. Allow Time For The Vehicle System To Complete Its...
$9.87
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No. 5
Gas Cap,Fuel Cap for Honda Civic Accord Pilot CRV CR-V Odyssey Crosstour
Gas Cap,Fuel Cap for Honda Civic Accord Pilot CRV CR-V Odyssey Crosstour
  • 【GAS CAP / FUEL CAP COMPATIBLE WITH】17670-T3W-A01, 17670T3WA01, Gas Cap Is 100% Rigorously Tested Before Shipping. Check The Part Number To Confirm The Compatibility Before Purchase, ( Includ...
  • 【COMPATIBLE WITH HONDA】Gas Cap Compatible With HONDA 2008-2017 Accord (Excludes Hybrid) | 2010-2015 Accord Crosstour | 2006-2015 Civic | 2007-2016 CR-V CRV
  • 【COMPATIBLE WITH HONDA】Fuel Cap Compatible With HONDA 2009-2020 Fit (EXCEPT 2014) | 2016-2020 HR-V HRV | 2010-2014 Insight | 2011-2017 Odyssey | 2009-2015 Pilot
  • 【EXCELLENT FUNCTION】High Quality Materials, Fuel Tank Cap Must Take 100% Inspected And Tested Multiple Times Before The Shipment, Gas Cap Is Constructed Of Premium Material For Long Lasting Durability And Reliability. Direct Replacement, Easy...
$9.87
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No. 6
Fuel Tank Gas Cap for Chevy,GMC,Cadillac,Buick,Pontiac
Fuel Tank Gas Cap for Chevy,GMC,Cadillac,Buick,Pontiac
  • Fit for Chevrolet Astro 1997-2003, Blazer 1996-2005, C1500 1997, Camaro 2002, Cavalier 1997-2004, Corvette 1997-2003, Express 1500 1998-2004, Express 2500 1998-2004, Express 3500 1998-2004, K1500 1997, Malibu 1997-2003, P30 1998-1999, S...
  • Fit for GMC C1500 1997, Envoy 2002-2003, Envoy XL 2002-2003, Jimmy 1996-2001, K1500 1997, P3500 1998-1999, Safari 1997-2003, Savana 1500 1998-2004, Savana 2500 1998-2004, Savana 3500 1998-2004, Sonoma 1996-2004
  • Fit for Cadillac CTS 2003, DeVille 1998-2005, Eldorado 1998-2002, Seville 1998-2004
  • Fit for Oldsmobile 88 1998-1999, Achieva 1997-1998, Alero 1999-2004, Aurora 1998-2003, Bravada 1996-2004, Cutlass 1997-1999, LSS 1997-1999, Regency 1998
  • Fit for Buick Century 1997-1999, LeSabre 1998-2005, Park Avenue 1998-2005, Rendezvous 2002-2003, Riviera 1998-1999, Skylark 1997-1998
$9.36
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No. 7
Gates 31748 OE Equivalent Fuel Tank Cap
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
$9.99 Amazon Prime
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No. 8
Gas Cap,Fuel Cap for Mini Cooper BMW X1 X2 X3 X4 X5 X6 128i 135i 228i 320i
Gas Cap,Fuel Cap for Mini Cooper BMW X1 X2 X3 X4 X5 X6 128i 135i 228i 320i
  • 【FUEL CAP / GAS CAP COMPATIBLE WITH】16117222391,31848, 10844, Fuel Tank Filler Cap Is 100% Rigorously Tested Before Shipping. Check The Part Number To Confirm The Compatibility Before Purchase. GAS CAP For Wide Range of BMW Series (Includ...
  • 【FITS FOR BMW 128 ~ 440I/IS/XI Series】Gas Cap/ Fuel Cap For BMW 2008-2013 128I & 2008-2013 135I & 2013 135IS & 2014-2016 228I & 2017-2018 230I & 2001-2018 320I & 2000 323CI & 2000-2011 323I & 2001-2006 325CI & 2001-2006 325I & 2001-2006 325XI...
  • 【FITS FOR BMW 525 ~ 760I/IS/XI Series】Gas Cap/ Fuel Cap For BMW 2001-2007 525I & 2006-2007 525XI & 1999-2016 528I & 2008 528XI & 2001-2018 530I & 2006-2007 530XI & 2008-2016 535I & 2010-2017 535I GT & 2008 535XI & 1999-2018 540I & 2004-2005 545I...
  • 【FITS FOR BMW M/X/Z Series & MINI COOPER】2016-2018 BMW M2 & 2014-2016 BMW M235I & 2017-2018 BMW M240I & 2001-2018 BMW M3 & 2015-2018 BMW M4 & 2000-2018 BMW M5 & 2018 BMW M550I & 2006-2018 BMW M6 & 2017-2018 BMW M760I & 2018 BMW M760LI & 2012-2018 BMW...
  • 【CUSTOMER SERVICE】If For Any Reason At All, You'Re Not 100% Satisfied With The Fuel Tank Filler Cap, Simply Return It.
$9.87
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No. 9
Gas Cap Fuel Cap for 2012-2021 Chevy GMC Cadillac, Silverado Sierra Express
Gas Cap Fuel Cap for 2012-2021 Chevy GMC Cadillac, Silverado Sierra Express
  • 【Gas Cap Fuel Cap Replacement】GT360, 22921365, Check The Part Number Before Your Order, It saves you the time of buying back and forth, and also helps you save money.
  • 【High Quality】Made of high quality material, the fuel tank cap must be 100% inspected and tested many times before out of factory, durable and reliable. Direct replacement, easy to install.
  • 【COMPATIBLE WITH Chevy】Gas Cap Compatible With Chevy, 2014-2020 Silverado 1500, 2015-2020 Silverado 2500 HD, 2015-2021 Silverado 3500 HD, 2012-2014 Express 1500, 2012-2021 Express 2500, 2012-2021 Express 3500, 2012-2019 Express...
  • 【COMPATIBLE WITH GMC】Gas Cap Compatible With GMC, 2012-2014 Savana 1500, 2012-2020 Savana 2500, 2012-2020 Savana 3500, 2012-2019 Savana 4500, 2014-2018, 2020 Sierra 1500, 2015-2020 Sierra 2500 HD, 2015-2020 Sierra 3500 HD, 2015-2016 Yukon...
  • 【COMPATIBLE WITH Cadillac】Gas Cap Compatible With Cadillac, 2015-2016 Escalade, 2015-2016 Escalade ESV.
  • REPLACEMENT or REFUND when gas cap fails, cracks, stops working or any other problems. 12 months Worry-Free & 12-Hour response friendly customer service.
$9.99
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No. 10
Zosgrew 1 PC Fuel Cap, Leakproof Tight Fit Gas Tank Cap, ABS Sfuel Cap Replacement OEM 17251-1VZ0D...
Zosgrew 1 PC Fuel Cap, Leakproof Tight Fit Gas Tank Cap, ABS Sfuel Cap Replacement OEM 17251-1VZ0D...
  • Compatibility Information: This gas cap is Nissan Infiniti. Replacement OE: 17251-1VZ0D, 17251-3JA0A. Please check your vehicle model before purchase to avoid incompatibility.
  • Premium Material: It is made of high quality ABS material with smooth surface and lightweight hard texture. It has good sealing, anti-leakage, waterproof and impact resistance, high and low temperature resistance, not easy to aging and loose off, can be...
  • Leak-proof Design: This fuel tank cap effectively ensures the sealing of the fuel tank, preventing fuel leakage and external impurities from entering the fuel tank, avoiding leading to engine failure. It is also equipped with a hook structure, which can...
  • Easy to Use: It is very easy and fast to install. You just need to use a flat screwdriver to remove the old gas cap, then replace it with a new one, and finally check whether the car gas tank opens and closes smoothly and seals tightly.
  • Package: You will get 1 x gas cap. It not only safeguards the fuel system, but also improves driving convenience in details and effectively reduces the risk of car breakdown.
$8.99
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Last update on 2026-09-01 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Gas Caps

When to Replace Your Gas Cap

The most common indicator that your gas cap needs replacement is the illumination of the check engine light, often accompanied by an EVAP system code. You might also notice a fuel smell around your vehicle or a slight decrease in fuel efficiency. Even if no warning lights appear, a worn-out seal can degrade over time, so occasional inspection is advisable.

Frequently Asked Questions

How do I know if my gas cap is bad?
The most common sign is the check engine light illuminating on your dashboard. You might also detect a fuel odor around your vehicle or notice a slight decrease in your gas mileage.
Can I use a gas cap from a different car model?
It's generally not recommended to use a gas cap from a different car model unless it is explicitly stated as compatible. The seals and threads need to match precisely to ensure proper function and prevent leaks.
How often should I replace my gas cap?
Gas caps don't have a fixed replacement interval like other parts. You should replace it if it's damaged, the seal is cracked or worn, or if it's causing your check engine light to come on.
What happens if I don't tighten my gas cap properly?
If your gas cap isn't tightened properly, it won't create a seal, allowing fuel vapors to escape. This can trigger your check engine light and negatively impact your vehicle's fuel efficiency.
Will a new gas cap fix my check engine light?
A new gas cap can often fix a check engine light if the cause is an EVAP system leak due to a faulty cap. However, the check engine light can be triggered by many issues, so it's wise to confirm the diagnosis if possible.