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Top rated automotive replacement fuel tank caps

AI-generated summary · updated July 29, 2026 · verify details before purchase.

  1. Stant 10508 Locking Fuel Cap
    Best overall Generic

    Stant 10508 Locking Fuel Cap

    4.6/5 $37.99

    Universally fits most vehicles, provides secure locking mechanism to prevent fuel theft and contamination.

    • Universal fit
    • Durable construction
    • Easy to install
    • Locking mechanism can be stiff
  2. Motorad MGC-1005 Fuel Cap
    Best value MotoRad

    Motorad MGC-1005 Fuel Cap

    4.5/5 $9.32

    Affordable replacement cap with good sealing; fits many GM and Ford models.

    • Budget-friendly
    • Good seal
    • OE style
    • Not locking
  3. Gates 31339 Fuel Cap
    Durable choice Gates

    Gates 31339 Fuel Cap

    4.5/5 $7.98

    Rugged construction with corrosion-resistant materials; fits many cars and trucks.

    • Corrosion-resistant
    • Snug fit
    • Long-lasting
    • Can be tight to remove
  4. ACDelco GT300 Fuel Cap
    OE replacement GM GENUINE PARTS

    ACDelco GT300 Fuel Cap

    4.7/5 $30.78

    OEM-quality cap for GM vehicles; ensures proper fuel system pressure and emissions control.

    • OE quality
    • Perfect fit for GM
    • Releases pressure correctly
    • Not universal
  5. Dorman 911-001 Fuel Cap
    Versatile fit Dorman

    Dorman 911-001 Fuel Cap

    4.4/5 $41.70 Only 17 left

    Fits multiple makes and models; includes tether for convenience.

    • Versatile fit
    • Includes tether
    • Affordable
    • Tether may break over time
  6. Stant 10509 Locking Fuel Cap
    Security MotoRad

    Stant 10509 Locking Fuel Cap

    4.5/5 $24.99 Only 2 left

    Key-locking design deters theft; fits most domestic and import vehicles.

    • Anti-theft
    • Durable
    • Easy to use
    • Key can be lost
  7. VMS Racing Fuel Cap
    Best budget pick VMS RACING

    VMS Racing Fuel Cap

    4.3/5 $21.95 Only 4 left

    Simple and effective replacement cap for many cars; great value for the price.

    • Very affordable
    • Basic functionality
    • Easy install
    • Plastic construction
    • Not locking

Buying advice

When choosing a fuel cap, ensure it fits your vehicle's make and model - check the gas cap type (threaded or bayonet) and whether you need a locking version. Look for caps that seal properly to avoid check-engine lights from evaporative emissions system leaks. For security, a locking cap is recommended, but ensure the mechanism feels solid. Replace caps that show cracks or loose seals.

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