Locking Gas Cap W/2 Keys
4.1Editor score
Direct OEM part replacement
Chemical resistant design
Fits Toyota and Lexus models
In this guide
Securing your vehicle fuel tank is essential for preventing theft and maintaining efficiency. A locking gas cap with keys provides a reliable barrier against unauthorized access to your fuel supply.
We have analyzed ten highly rated options based on compatibility, build quality, and customer feedback. This list covers various brands and vehicle types to ensure you find the perfect match.
Each pick highlights key features and real world performance notes to guide your decision. Please note that availability and pricing may change so always check the latest details before purchasing.
Top 3 Picks for Best Locking Gas Cap with Keys
GM Genuine Parts GT264
4.4Editor score
Factory approved OEM replacement
Tight seal for emission control
Two included security keys
Gates 31828
4.2Editor score
Heavy duty rugged construction
Fuel resistant rubber seals
Quarter turn locking mechanism
Top 10 Best Locking Gas Cap with Keys in 2026 Compared
Below you will find a detailed side by side comparison of all ten products. We evaluate their specifications and compatibility to help you make an informed choice for your specific vehicle needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Locking Gas Cap W/2 Keys
OEM Part Numbers 10504 77300-47020
High performance sealing ring
Chemical resistant plastic body
Fits Toyota and Lexus models
4.1Editor score
Editor's Choice
Locking Gas Cap Fuel Tank with Key
ABS plastic and rubber material
Universal fit for many brands
Strong sealing performance
Includes two spare keys
3.5Editor score
Best Premium
United Pacific S1301
All metal construction
Triple chrome plated finish
Vented design for pressure
Fits classic Chevy and Ford
3.9Editor score
Locking Gas Cap Fuel Tank with 2 Key
Mechanical lock design
Waterproof and dustproof
Replaces 10504 77300
Universal compatibility range
3.1Editor score
Car Locking Gas Cap
OEM #12495845 Replacement
High hardness ABS material
Tight sealing design
Fits Honda and Mazda
3.1Editor score
GM Genuine Parts GT264
GM OE specification
Quarter turn fuel cap
Tight seal for tank
Includes two keys
4.4Editor score
Gates 31828
Fuel resistant rubber seals
Heavy duty construction
1/4 inch turn lock
Regular locking fuel cap
4.2Editor score
Keyed Alike Locking Fuel Cap
Durable long-life materials
Prevents theft and vandalism
Independently tested emission
Simple lock mechanism
4.3Editor score
Gates 31670
Fuel resistant rubber seals
Regular locking fuel cap
Deep Cam quick-on design
Rugged heavy-duty build
4.0Editor score
Locking Gas Cap Fit for Jeep
Part 05278655AB 5278655AB
Fits Jeep Dodge and Chrysler
Lock fuel tank cap
Wide vehicle compatibility
4.4Editor score
1. Locking Gas Cap W/2 Keys – Best Direct Fit for Toyota
Locking Gas Cap W/2 Keys
Fits Toyota and Lexus
High performance sealing
Chemical resistant plastic
Includes two keys
This locking gas cap ranks first due to its direct fit for Toyota and Lexus vehicles. It meets or exceeds OEM performance standards with a robust seal that keeps vapours inside.
Pros
- Direct fit for many models
- High quality seal performance
- Good value for money
- Easy to install quickly
- Durable construction material
Cons
- Key shape can be tricky
- Not for diesel vehicles
We may earn a commission when you buy through this link, at no additional cost to you.
The design offers gasoline and chemical resistance which ensures a long service life. Two keys are included to prevent lockouts and the installation is straightforward with a twist until click method.
Some users note the key shape is slightly unusual compared to factory keys but functionality is reliable. The plastic body holds up well against environmental exposure and fuel contact.
It is a great choice for owners of 4Runners or Camrys seeking an affordable security upgrade. We recommend verifying your part number before purchase to ensure perfect compatibility.
Superior Chemical Resistance
The cap resists gasoline and chemicals to ensure it does not degrade over time.
Easy Installation Process
Simply twist the cap until you hear a click to secure it in place.
We may earn a commission when you buy through this link, at no additional cost to you.
2. Locking Gas Cap Fuel Tank with Key – Best Universal Fit
Locking Gas Cap Fuel Tank with Key
Fits many brands
ABS plastic body
Strong sealing ring
Prevents fuel penetration
This cap stands out for its versatility across Toyota Chevy and other brands. It uses high quality ABS plastic and rubber to create a sturdy barrier against theft and leaks.
Pros
- Wide range of models
- Strong sealing performance
- Waterproof design
- Includes two keys
- Good price point
Cons
- Fit issues on some models
- Key quality varies
We may earn a commission when you buy through this link, at no additional cost to you.
The strong sealing performance helps save fuel and reduce emissions effectively. It is designed to prevent fuel penetration and ensure driving safety during daily use.
Some buyers report the fit is not perfect on every listed model so checking part numbers is crucial. The keys work well but quality can vary between units.
Ideal for owners of older vehicles who need a budget friendly locking solution. Always confirm your specific part number before ordering to avoid return hassles.
Durable Material Build
Constructed from ABS plastic and rubber to resist corrosion and water damage.
Fuel Safety Features
The seal prevents fuel vapor loss and keeps harmful emissions low.
We may earn a commission when you buy through this link, at no additional cost to you.
3. United Pacific S1301 – Best Classic Car Style
United Pacific S1301
All metal construction
Triple chrome finish
Vented design
For classic models
Designed for classic car enthusiasts this cap offers an all metal design with triple chrome plating. It fits 1947-1971 Chevy and Ford vehicles with a stylish and durable look.
Pros
- High shine chrome finish
- All metal durability
- Fits classic trucks
- Two keys included
- Vented for pressure
Cons
- Not for modern cars
- Higher price point
We may earn a commission when you buy through this link, at no additional cost to you.
United Pacific uses 30 years of experience to create parts that connect with big rig drivers and car enthusiasts. The vented design manages tank pressure while the lock secures fuel.
It is heavier than plastic caps which adds a premium feel but also cost. Owners of vintage trucks will appreciate the authentic look and robust build quality.
This is a perfect choice for restoration projects needing a high end locking gas cap. Ensure your vehicle year and model match the compatibility list before buying.
Vintage Aesthetics
The triple chrome process gives a high shine look ideal for classic cars.
Pressure Management
Vented design allows for proper tank pressure regulation during operation.
We may earn a commission when you buy through this link, at no additional cost to you.
4. Locking Gas Cap Fuel Tank with 2 Key – Best Anti-Theft
Locking Gas Cap Fuel Tank with 2 Key
Mechanical lock design
High ABS material
Direct replacement
Universal fit
This cap features a mechanical lock design molded integrally with the tank cap to deter theft. It is made of high quality ABS plastic with strong sealing properties to protect fuel.
Pros
- Prevents unauthorized access
- Waterproof design
- Flame-retardant material
- Fits many models
- Secure key lock
Cons
- Lower user ratings
- Lock mechanism stiff
We may earn a commission when you buy through this link, at no additional cost to you.
It resists high and low temperatures ensuring a long service life under various conditions. The locking mechanism requires a dedicated key to open and reduces fuel theft risk.
Some users find the lock mechanism stiff or difficult to turn initially. While effective for security the fit quality can vary on older vehicle tanks.
A solid option for those needing a direct replacement for 10504 caps. Always test the rotation and fit before finalizing installation to ensure proper sealing.
Mechanical Security
The lock cylinder is molded with the cap for added structural strength.
Temperature Resistant
Works reliably in extreme heat or cold without degrading.
We may earn a commission when you buy through this link, at no additional cost to you.
5. Car Locking Gas Cap – Best for Honda and Mazda
Car Locking Gas Cap
OEM 12495845
High hardness ABS
Fits Honda Mazda
Stable shape
This cap targets owners of Honda Civic Mazda Miata and similar models with its OEM 12495845 number. It uses high quality ABS plastic that maintains stability during daily use.
Pros
- High quality material
- Stable structure
- Includes two keys
- Blocks water and dust
- Easy to install
Cons
- Limited model fit
- Plastic feels thin
We may earn a commission when you buy through this link, at no additional cost to you.
The design prevents water and dust entry protecting the fuel system from failures. A built-in lock system paired with two keys offers comprehensive security for your fuel.
Some reviewers note the plastic feels thin compared to factory parts which may affect durability. However the locking function works well to prevent unauthorized access.
It is a good replacement for damaged OEM caps in the Honda Mazda lineup. Check your specific vehicle year to confirm the OEM number matches your needs.
High Hardness ABS
Uses material that is not prone to scratches or wear over time.
Protective Seal
Blocks impurities and water to avoid adverse effects on fuel.
We may earn a commission when you buy through this link, at no additional cost to you.
6. GM Genuine Parts GT264 – Best OEM for GM
GM Genuine Parts GT264
GM OE spec
Quarter turn cap
Tight seal
Includes 2 keys
This GM Genuine Part is engineered to provide a tight seal with a lock to deter theft. It is recommended as a replacement for original factory components in GM vehicles.
Pros
- Factory replacement part
- High reliability
- Sealed tightly
- Quality construction
- Guaranteed fit
Cons
- Higher cost
- Limited GM fit
We may earn a commission when you buy through this link, at no additional cost to you.
Manufactured to GM OE specifications it ensures fit form and function match the factory standard. The quarter turn design allows easy access when keys are available.
The price is higher than aftermarket options but the quality and durability justify the cost. Owners can expect strict quality requirements to be met for long term performance.
If you drive a Chevrolet or GMC this is the safest choice for fuel security. It offers the reliability and durability expected from an OE component.
OE Quality Standard
Offers the quality and reliability of GM OE for peace of mind.
Quarter Turn Lock
Easy twist mechanism allows quick access to the fuel tank.
We may earn a commission when you buy through this link, at no additional cost to you.
7. Gates 31828 – Best Heavy Duty Locking Cap
Gates 31828
Fuel resistant rubber
Heavy duty build
Quarter turn lock
Includes 2 keys
Gates delivers a rugged heavy duty cap designed to deter fuel theft and vandalism effectively. It seals are compounded from fuel resistant rubber to ensure longevity.
Pros
- Rugged construction
- Fuel resistant seals
- Quarter turn lock
- Deters theft
- Emission control
Cons
- Size may not fit all
- Higher price
We may earn a commission when you buy through this link, at no additional cost to you.
The locking mechanism opens with a simple 1/4 inch turn of the key which is convenient. It is a regular locking fuel cap designed for emission control requirements.
Users appreciate the sturdy build that withstands harsh conditions better than lighter caps. The rubber seals maintain integrity over time without cracking from fuel exposure.
Ideal for trucks or vehicles that need a robust locking solution. Verify your tank neck size matches the 2 29/32 inch Emission Control spec before buying.
Rubber Seals
Seals are compounded from fuel resistant rubber for long life.
Vandalism Deterrent
The lock mechanism deters theft and vandalism effectively.
We may earn a commission when you buy through this link, at no additional cost to you.
8. Keyed Alike Locking Fuel Cap – Best For Fleet Use
Keyed Alike Locking Fuel Cap
Keyed alike design
Durable materials
Emission tested
Prevents theft
This cap protects your fuel from theft and vandalism with a durable design. It is manufactured from long life materials that are independently tested for emission control.
Pros
- Same key for all
- Durable materials
- Independently tested
- Prevents theft
- Simple design
Cons
- Limited model info
- Generic fit
We may earn a commission when you buy through this link, at no additional cost to you.
The Keyed Alike label suggests it can work with other caps using the same key code. This is useful for fleets or households with multiple vehicles needing one key.
Product details on specific fits are sparse but the rating suggests reliable performance. It offers a simple approach to securing your fuel without complex mechanisms.
Good for those needing a straightforward locking cap for a variety of tanks. Check the key type before buying if you plan to match existing keys.
Emission Control
Independently tested to ensure compliance with emission standards.
Material Quality
Manufactured from durable and long-life materials for lasting use.
We may earn a commission when you buy through this link, at no additional cost to you.
9. Gates 31670 – Best Deep Cam Option
Gates 31670
Fuel resistant seals
Heavy duty build
Deep Cam quick-on
Includes 2 keys
Similar to the 31828 this cap features fuel resistant rubber seals and rugged construction. It is a regular locking fuel cap with a 2 5/8 inch Emission Control size.
Pros
- Deep Cam design
- Fuel resistant seals
- Rugged build
- Quarter turn lock
- Anti-theft
Cons
- Different size than 31828
- May not fit all
We may earn a commission when you buy through this link, at no additional cost to you.
The Deep Cam quick-on design allows for a secure fit on specific tank necks. The locking mechanism deters fuel theft and vandalism with a quarter turn key action.
Users report strong durability and reliable sealing. It is slightly larger than other models so verifying dimensions is essential before installation.
A strong choice for vehicles requiring the specific Deep Cam interface. It combines security with high build quality from a trusted brand like Gates.
Deep Cam Quick-On
Features a Deep Cam quick-on design for a secure fit.
Rugged Construction
Rugged heavy-duty construction ensures long-term reliability.
We may earn a commission when you buy through this link, at no additional cost to you.
10. Locking Gas Cap Fit for Jeep – Best for FCA Group
Locking Gas Cap Fit for Jeep
Part 05278655AB
Fits Jeep models
Wide range
Direct replacement
This cap is designed specifically for a wide range of Jeep Dodge Chrysler and Ram vehicles. It replaces part 05278655AB and fits models like Wrangler Grand Cherokee and Challenger.
Pros
- Many FCA models
- Direct part fit
- Secure lock
- Easy to install
- Good price
Cons
- Not universal for all
- Key quality varies
We may earn a commission when you buy through this link, at no additional cost to you.
It provides a direct replacement function that is easy to install with a secure locking mechanism. The lock ensures your fuel is safe from unauthorized access and theft.
The list of compatible vehicles is extensive but always check your specific model year. Some users note the keys are functional but the build feels utilitarian.
Excellent for owners of Ram or Wrangler who want an affordable locking upgrade. Ensure your part number matches 05278655AB before ordering to guarantee fit.
Wide Model Support
Fits a large range of Jeep Dodge and Chrysler models.
Direct Replacement
Direct replacement for part 05278655AB for easy install.
We may earn a commission when you buy through this link, at no additional cost to you.
Buying Guide – How to Choose the Best Locking Gas Cap with Keys
Selecting the right locking gas cap requires attention to compatibility material quality and security features. Here are key factors to consider before making a purchase.
Vehicle Compatibility
Check your OEM part number to ensure the cap fits your specific tank neck and threads. Mismatched sizes can lead to leaks or improper sealing.
Always confirm part numbers like 10504 or 05278655AB match your vehicle before buying.
Material Construction
Choose caps made from high quality ABS plastic or metal for durability. Metal caps suit classic cars while plastic resists corrosion in modern vehicles.
Materials should be fuel resistant and withstand temperature changes without degrading.
Sealing Quality
A tight seal is crucial for preventing fuel evaporation and keeping harmful emissions low. Look for rubber gaskets that compress well against the tank rim.
Strong sealing reduces vapor loss and protects the environment effectively.
Locking Mechanism
Ensure the lock operates smoothly with a quarter turn or twist motion. The key should be sturdy enough to resist wear and breakage over time.
The lock must deter theft effectively while allowing easy access for authorized users.
Number of Keys
Most caps come with two keys to prevent lockouts if one is lost. Having a spare key is essential for reliable access to your fuel tank.
Always check how many keys are included in the box before purchase.
OEM vs Aftermarket
OEM parts guarantee a perfect fit but cost more than aftermarket alternatives. Aftermarket options offer great value but require careful compatibility checks.
Choose OEM if budget allows or verify aftermarket reviews for reliability.
Price and Value
Prices vary based on material and brand reputation. A higher price does not always mean better quality so read reviews carefully.
Balance cost with the expected lifespan of the product.
Installation Ease
Look for caps that install without special tools. Simple twist and lock mechanisms save time and frustration during replacement.
Easy installation ensures you can swap old caps quickly.
How to Use and Care for Your Locking Gas Cap with Keys
Clean the fuel tank opening before installing the new cap to remove dirt and debris. This ensures the sealing gasket sits flush and prevents leaks.
Align the cap with the tank opening and rotate it clockwise until you hear a click or feel it lock securely. Do not force it beyond the stop.
Test the lock mechanism with the key to ensure smooth operation. Store keys in a safe place separate from the vehicle to prevent lockouts.
Frequently Asked Questions
Do locking gas caps really prevent theft?
Yes locking gas caps act as a visible deterrent to fuel thieves. They require a specific key to open which stops casual attempts to siphon fuel. While not indestructible they significantly reduce theft risk.
Can I use any locking gas cap on my vehicle?
No you must match the cap to your vehicle part number and tank size. Incorrect sizes cause leaks or emissions issues. Always check compatibility lists before buying.
How do I replace my old gas cap?
Unscrew the old cap counterclockwise and clean the rim thoroughly. Screw the new cap on clockwise until it clicks or locks into place. Test the seal by checking for gaps.
Will a locking cap affect my vehicle warranty?
Installing a locking cap usually does not affect your warranty unless it causes fuel system damage. OEM parts are safest for warranty claims. Aftermarket parts must meet emission standards.
Why does my check engine light come on after changing the cap?
This often means the cap is not sealing properly or is missing. Ensure the cap is tightened fully and the gasket is intact. Replace if the light persists after driving.
How many keys come with a locking gas cap?
Most locking gas caps come with two keys. One key is for daily use and the other serves as a spare. This prevents issues if the primary key is lost.
Are locking gas caps universal?
No locking gas caps are not universal. They are designed for specific tank sizes and thread patterns. Always verify compatibility with your vehicle make and model before ordering.
How long does a locking gas cap last?
A quality locking gas cap can last several years with proper care. Exposure to fuel and weather can wear seals over time. Inspect the gasket periodically for cracks.
Final Thoughts on Choosing the Best Locking Gas Cap with Keys
We have reviewed ten top options ranging from OEM GM parts to versatile aftermarket caps. The GM Genuine Parts GT264 stands out for reliability while the Toyota compatible models offer great value.
Prioritize compatibility and sealing quality to ensure your fuel tank stays secure and efficient. Choose materials that suit your vehicle type and budget for best results.
Please verify current availability and details on the product pages before purchasing. Prices and stock change frequently so always check the latest info.