Locking Gas Cap W/2 Keys
4.1Editor score
Fits multiple Toyota models
High sealing performance
Includes two security keys
In this guide
Protecting your vehicle from fuel theft is more important than ever. A reliable locking gas cap with keys provides a simple yet effective barrier against unauthorized access to your fuel tank. Whether you drive a classic truck or a modern SUV, securing your fuel is essential for peace of mind and cost savings.
We have carefully evaluated ten top-rated locking gas caps to help you find the perfect fit for your vehicle. Each product was assessed based on build quality, sealing performance, key security, and compatibility with various makes and models. Our goal is to provide you with clear, factual information to support your purchasing decision.
Every recommendation below includes detailed specifications and real-world advantages for each locking gas cap with keys. We highlight specific benefits such as fuel resistance, anti-theft mechanisms, and ease of installation to guide your choice. Please note that product availability and pricing may change over time, so verify details before purchasing.
Top 3 Picks for Best Locking Gas Cap with Keys
GM Genuine Parts GT264
4.4Editor score
OEM quality construction
Tight seal technology
Deters fuel theft effectively
United Pacific S1301
3.9Editor score
All metal construction
Triple chrome plating
Classic vehicle compatibility
Top 10 Best Locking Gas Cap with Keys in 2026 Compared
The following table provides a side-by-side comparison of all ten locking gas caps we reviewed. Each entry highlights key specifications including material composition, part numbers, and compatible vehicle ranges. This overview helps you quickly identify which cap matches your specific automotive needs and security requirements.
ProductsSpecificationsEditor scorePrice
Best Budget
Locking Gas Cap W/2 Keys
Replaces part 10504
Fits Toyota 4Runner
ABS plastic construction
Includes two keys
4.1Editor score
Editor's Choice
Locking Gas Cap Fuel Tank with Key
Replaces part 10504
Fits Chevy Silverado
Rubber sealing ring
Waterproof design
3.5Editor score
Best Premium
United Pacific S1301
All metal design
Triple chrome finish
Fits 1947-71 trucks
Includes two keys
3.9Editor score
Locking Gas Cap Fuel Tank with 2 Key
Anti-theft lock design
Replaces part 10504
Flame-retardant ABS
Universal fitment
3.1Editor score
Car Locking Gas Cap
OEM number 12495845
Fits Miata models
Hard ABS plastic
Tight sealing design
3.1Editor score
GM Genuine Parts GT264
GM OE specification
Fits GM vehicles
Quarter turn design
Includes two keys
4.4Editor score
Gates 31828
Fuel-resistant rubber
Heavy-duty construction
1/4 inch turn
Includes two keys
4.2Editor score
Keyed Alike Locking Fuel Cap
Prevents fuel theft
Long-life materials
Emission tested
Durable construction
4.3Editor score
Gates 31670
Fuel-resistant rubber
Heavy-duty construction
1/4 inch turn
Includes two keys
4.0Editor score
Locking Gas Cap Fit for Jeep
Replaces 05278655AB
Fits Jeep Wrangler
Fits Dodge Ram
Fits Chrysler models
4.4Editor score
1. GM Genuine Parts GT264 – Editor's Choice
GM Genuine Parts GT264
GM OE specification
Quarter turn design
Tight seal technology
Includes two keys
The GM Genuine Parts GT264 stands out as the top choice for owners seeking factory-grade reliability. With a rating of 4.4 stars, this locking gas cap with keys ensures your fuel tank remains securely sealed against theft and evaporation. It is engineered to meet strict GM quality standards for fit and function.
Pros
- Genuine GM quality
- Reliable fuel seal
- Effective anti-theft
- Direct OEM replacement
- High customer rating
Cons
- Higher price point
- Limited to GM vehicles
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This cap features a quarter turn mechanism that is both easy to use and highly secure. The locking system is integrated seamlessly into the design, providing a robust deterrent to unauthorized access. Its manufacturing quality ensures it maintains a tight seal, preventing fuel loss and maintaining proper emission control.
While it comes at a higher price compared to aftermarket options, the value lies in its authenticity and performance. The trade-off is minimal for those prioritizing original equipment quality over cost savings. GM vehicle owners will appreciate the exact fit and finish that mimics the original component.
This cap is ideal for drivers who want peace of mind knowing their fuel tank is protected by trusted OEM technology. We recommend it for anyone looking to replace a worn or lost factory cap without compromising on quality or security standards.
Factory Grade Reliability
Manufactured to GM OE specifications ensures the cap fits perfectly and performs as expected for long-term reliability and protection.
Effective Fuel Theft Deterrent
The integrated locking mechanism provides strong protection against theft, ensuring you keep your fuel where it belongs.
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2. Locking Gas Cap W/2 Keys – Best Budget
Locking Gas Cap W/2 Keys
Replaces part 10504
High sealing performance
Fits multiple Toyota models
Includes two keys
This locking gas cap with keys offers exceptional value for Toyota owners needing a reliable replacement. With a 4.1 rating, it balances cost and performance effectively. The cap is designed to resist chemicals and maintain a high seal to reduce vapor emissions and fuel loss.
Pros
- Excellent value
- Strong chemical resistance
- Direct installation
- High fuel permeability control
- Compatible with Toyota
Cons
- Basic key design
- Limited to Toyota
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Its construction focuses on durability and functional performance without unnecessary extras. The direct installation process makes it simple to swap out old caps. Two keys are included to ensure you always have access to your fuel tank even if one key is misplaced.
While the key mechanism is standard rather than advanced, it provides adequate security for most daily use cases. For budget-conscious buyers, this cap delivers the essential protection needed without overspending. It is a practical choice for maintaining vehicle compliance and fuel efficiency.
We recommend this cap for Toyota drivers looking for an affordable, effective locking solution. It is particularly suitable for those who want to secure their fuel without investing in premium aftermarket features.
Chemical Resistance
The cap is engineered to resist gasoline and chemicals, ensuring long service life and reduced replacement frequency.
Toyota Specific Fitment
Designed specifically for Toyota models, this cap provides a precise fit that ensures optimal performance and sealing.
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3. United Pacific S1301 – Best Premium
United Pacific S1301
All metal design
Triple chrome finish
Fits 1947-71 trucks
Includes two keys
The United Pacific S1301 is the premium choice for classic car enthusiasts restoring vintage Chevy or Ford trucks. Its all-metal construction and triple chrome plating deliver a showroom-quality finish. The locking gas cap with keys provides both security and aesthetic appeal for restored vehicles.
Pros
- Classic vehicle fitment
- Durable metal construction
- High shine finish
- Vented design
- Includes two keys
Cons
- Older model vehicles
- Premium pricing
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This cap features a vented design that ensures proper pressure regulation in older fuel systems. Its heavy-duty build quality is suited for vehicles that require authentic period-correct components. The included keys are durable and provide reliable access to the fuel tank.
While it is more expensive than standard plastic caps, the investment pays off in durability and appearance. Classic car owners will appreciate the attention to detail in its manufacturing. It is designed to withstand the rigors of regular use while maintaining its shine.
We recommend this cap for anyone restoring a 1947-71 Chevy or Ford vehicle. It offers the perfect blend of security, durability, and vintage styling that enhances the overall look of your classic truck.
Classic Style Aesthetics
The triple chrome finish provides a high shine appearance that perfectly matches the vintage styling of classic trucks.
Durable Metal Construction
Built entirely from metal, this cap offers superior strength and longevity compared to standard plastic alternatives.
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4. Locking Gas Cap Fuel Tank with 2 Key – Universal Fit
Locking Gas Cap Fuel Tank with 2 Key
Anti-theft lock design
Replaces part 10504
Flame-retardant ABS
Universal fitment
This locking gas cap with keys offers a universal solution for a wide range of vehicle models. With a focus on security and compatibility, it is designed to replace common OEM parts across Toyota, Chevy, and Honda vehicles. The material is flame-retardant and provides strong sealing performance.
Pros
- Wide vehicle compatibility
- Flame-retardant material
- Strong sealing performance
- Direct replacement design
- Includes two keys
Cons
- Lower rating
- Plastic construction
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The lock cylinder is integrally molded for added structural integrity. This design helps prevent unauthorized opening effectively reducing the risk of fuel theft. It is an excellent option for owners of multiple vehicle types who want a consistent security approach.
While the rating is lower than top competitors, it still offers essential protection at a reasonable price. The trade-off is mainly in material strength compared to OEM parts. However, its versatility makes it a practical choice for diverse fleets.
We recommend this cap for owners seeking a versatile locking solution for various models. It is particularly useful for those who need a reliable replacement that fits multiple vehicles without needing specific OEM numbers.
Flame-Retardant Safety
The high-quality ABS plastic is flame-retardant and impact-resistant ensuring safe and durable operation under heat and stress.
Versatile Compatibility
Compatible with many models including 4Runner Silverado and Civic this cap offers broad fitment for various vehicles.
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5. Car Locking Gas Cap – Specific Replacement
Car Locking Gas Cap
OEM number 12495845
Fits Miata models
Hard ABS plastic
Tight sealing design
This locking gas cap with keys serves as a direct replacement for specific models including the Miata and Bonneville. It features a professional lock system that reduces fuel theft risk significantly. The hard ABS material ensures the cap maintains its shape and function over time.
Pros
- Specific OEM replacement
- Durable ABS material
- Prevents fuel theft
- Includes two keys
- Easy installation
Cons
- Limited model range
- Average rating
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Its tight sealing design prevents impurities like water and dust from entering the fuel tank. This protects the fuel system from potential failures caused by contamination. The included two keys ensure you always have access to your fuel tank.
While the rating is average, the cap performs its core functions reliably for the intended models. The installation process is straightforward and requires no special tools. It is a practical choice for owners needing a specific OEM-compatible replacement.
We recommend this cap for drivers of Miata and other listed models seeking a secure and affordable fuel cap replacement. It offers essential protection without the premium cost of branded OEM parts.
Fuel System Protection
The sealing design effectively blocks water and dust ensuring your fuel remains clean and your system stays protected.
Professional Lock System
A built-in professional lock paired with a dedicated key reduces fuel theft risk and provides reliable access.
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6. Gates 31828 – Heavy-Duty Seal
Gates 31828
Fuel-resistant rubber
Heavy-duty construction
1/4 inch turn
Includes two keys
The Gates 31828 is renowned for its rugged construction and strong fuel resistance. This locking gas cap with keys is compounded from fuel-resistant rubber ensuring durability. It effectively deters theft and vandalism with a reliable locking mechanism that opens with a quarter turn.
Pros
- High sealing performance
- Deters theft and vandalism
- Fuel-resistant materials
- Quarter turn mechanism
- High quality rating
Cons
- Higher price
- Standard universal fit
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Its heavy-duty design is built to withstand harsh environmental conditions. The cap maintains a tight seal preventing fuel evaporation and leakage. This helps save fuel and reduce harmful emissions while keeping your tank secure from unauthorized access.
While priced higher than budget options, the quality justifies the cost for long-term reliability. The trade-off is mainly in initial investment. However, owners will appreciate the consistent performance and durability provided by this trusted brand.
We recommend this cap for owners who prioritize durability and fuel efficiency. It is ideal for vehicles frequently exposed to rough conditions or those requiring reliable emission control compliance.
Rugged Construction
Built with fuel-resistant rubber and heavy-duty materials this cap ensures long-lasting performance under tough conditions.
Quarter Turn Access
The lock opens with a simple quarter turn of the key ensuring quick and convenient fuel access.
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7. Keyed Alike Locking Fuel Cap – Consistent Access
Keyed Alike Locking Fuel Cap
Prevents fuel theft
Long-life materials
Emission tested
Durable construction
This locking gas cap with keys stands out with a high 4.3 rating. It is independently tested for emission control ensuring it meets regulatory standards. The durable, long-life materials ensure it provides consistent protection against fuel theft and vandalism over time.
Pros
- High customer rating
- Durable materials
- Emission tested
- Theft protection
- Reliable lock
Cons
- No specific vehicle list
- Universal fit only
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Its design focuses on simplicity and reliability. The locking mechanism effectively prevents unauthorized access to your fuel tank. Owners appreciate the peace of mind knowing their fuel is secure. It is a solid choice for those needing basic yet effective security.
While it does not specify vehicle compatibility as detailed as other models, it fits many standard tanks. The trade-off is the need to verify fitment before purchase. However, the proven durability makes it a reliable option.
We recommend this cap for anyone seeking a proven, reliable locking solution. It is perfect for drivers who value emission compliance and long-term durability over complex features.
Emission Compliance
Independently tested for emission control this cap ensures your vehicle meets strict regulatory standards and efficiency goals.
Durable Longevity
Manufactured from durable long-life materials this cap withstands daily use without losing strength or protective function.
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8. Gates 31670 – Deep Cam Design
Gates 31670
Fuel-resistant rubber
Heavy-duty construction
1/4 inch turn
Deep Cam thread
The Gates 31670 is a robust locking gas cap with keys designed for reliability and durability. It features fuel-resistant rubber seals and a heavy-duty construction that withstands daily use. The lock opens with a quarter turn and includes two keys for convenient access.
Pros
- Robust construction
- Fuel-resistant materials
- Quarter turn mechanism
- Deep Cam threading
- Reliable brand
Cons
- Slightly higher price
- Universal fit limitation
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Its deep Cam thread design ensures a secure fit on compatible fuel tanks. This prevents loosening during rough driving conditions. The cap helps reduce fuel evaporation and maintains a tight seal. It is an effective solution for protecting your fuel and emissions system.
While priced slightly higher than budget caps, the reliability justifies the investment. The trade-off is the need to confirm thread compatibility. However, its proven performance makes it a trusted choice for many owners.
We recommend this cap for those needing a sturdy, reliable locking option. It is especially suitable for vehicles that experience regular wear and require consistent fuel system protection.
Deep Cam Thread Fit
The deep cam threading ensures a secure fit on compatible tanks preventing loosening during rough driving conditions.
Fuel Resistant Seals
Seals compounded from fuel-resistant rubber ensure the cap lasts longer and maintains a tight seal against leaks.
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9. Locking Gas Cap Fit for Jeep – Jeep Specialist
Locking Gas Cap Fit for Jeep
Replaces 05278655AB
Fits Jeep Wrangler
Fits Dodge Ram
Fits Chrysler models
This locking gas cap with keys is tailored specifically for Jeep Dodge and Chrysler vehicles. With a 4.4 rating it has proven its reliability among owners of Wranglers and Rams. It directly replaces OEM part 05278655AB ensuring a seamless fit and function.
Pros
- Perfect fit for Jeep
- High customer rating
- Affordable price
- Multiple key access
- Direct replacement
Cons
- Brand variation
- Specific part match
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The design focuses on secure locking while maintaining the original cap's appearance. It prevents unauthorized access and reduces fuel theft risk effectively. The two keys included ensure you always have access to refuel. It is a practical solution for protecting your investment.
While it is an aftermarket part it offers high quality at an affordable price. The trade-off is ensuring part number compatibility before purchasing. However, the high rating suggests it meets the expectations of most users.
We recommend this cap for owners of Jeep or Ram vehicles looking for a direct replacement. It provides essential security without compromising on fit or performance standards.
Perfect OEM Match
Directly replaces part 05278655AB ensuring a seamless fit that matches the original design perfectly.
Effective Security
The locking mechanism effectively prevents unauthorized access reducing the risk of fuel theft significantly.
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10. Locking Gas Cap Fuel Tank with Key – Broad Range
Locking Gas Cap Fuel Tank with Key
Replaces part 10504
Fits Chevy Silverado
Rubber sealing ring
Waterproof design
This locking gas cap with keys is designed for a broad range of brands including Toyota Chevy and Honda. With a focus on protecting personal property it offers strong sealing performance. The ABS plastic and rubber construction ensures durability and anti-corrosion protection.
Pros
- Wide brand coverage
- Waterproof performance
- Fuel theft deterrent
- Easy installation
- Includes two keys
Cons
- Lower rating
- Basic design
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Its waterproof design helps prevent fuel penetration and reduces vapor emissions. This saves fuel and ensures driving safety. The installation is straightforward requiring just a twist to click. It is a practical option for owners seeking basic security.
While the rating is lower than others, it serves its purpose well for general use. The trade-off is minimal compared to the protection it offers. The two keys included ensure convenient access for any owner.
We recommend this cap for owners of various brands looking for a reliable locking solution. It is suitable for daily driving and provides essential fuel protection without complexity.
Waterproof Protection
The waterproof design prevents water entry and fuel penetration ensuring your fuel system stays clean and protected.
Simple Installation
Installation is easy requiring just a twist to click making it simple to replace old or damaged lids.
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Buying Guide – How to Choose the Best Locking Gas Cap with Keys
Choosing the right locking gas cap involves considering several key factors. This guide outlines the most important aspects to help you make an informed decision.
Vehicle Compatibility
Always verify the part number and model fitment before purchasing. A cap that does not match your vehicle's tank threads will not seal properly.
Check the product details against your vehicle's make and model to ensure a perfect fit.
Material Construction
Look for caps made from high-quality materials like ABS plastic or metal. Quality materials resist chemicals and wear over time.
Durability ensures the cap lasts longer and maintains its protective function under daily use.
Sealing Performance
A good cap must create a tight seal to prevent fuel evaporation and keep dirt out. Poor sealing leads to fuel loss and system contamination.
Look for caps with rubber seals or vented designs that maintain pressure balance.
Security Mechanism
Evaluate the locking mechanism for ease of use and strength. A reliable lock should deter theft effectively.
Ensure the cap includes at least two keys so you always have backup access to your fuel tank.
Emission Compliance
Caps must meet emission standards to avoid vehicle inspection issues. Look for caps that are emission tested.
This ensures your vehicle operates efficiently and meets local environmental regulations.
Brand Reputation
Choose products from reputable brands like Gates or GM. Established brands offer better quality assurance and customer support.
Customer reviews provide insight into real-world performance and reliability of the product.
Installation Ease
The cap should be easy to install without special tools. Look for direct replacement designs that fit existing threads.
Simple installation saves time and ensures the cap is properly seated for optimal performance.
Price Value
Balance the price with the features offered. Higher prices do not always guarantee better quality for all users.
Select a cap that meets your security needs and budget without compromising on safety standards.
How to Use and Care for Your Locking Gas Cap with Keys
To install your locking gas cap, unscrew the old cap counterclockwise and clean the fuel tank opening. Align the new cap and tighten it clockwise until it clicks securely into place.
To unlock the cap, insert the key into the lock cylinder and rotate it to the locked position. Always remove the key after locking the cap to prevent it from being left inside the fuel tank.
Regularly inspect the cap for signs of wear or damage. Keep the key mechanism clean by avoiding dust buildup and replace the cap if the seals show signs of degradation.
Frequently Asked Questions
Are locking gas caps worth the investment?
Yes, locking gas caps are worth the investment for drivers concerned about fuel theft or vandalism. They provide an effective barrier against unauthorized access. Additionally, they maintain emission standards and prevent fuel evaporation.
Do locking gas caps fit all vehicle models?
No, locking gas caps do not fit all models universally. You must verify compatibility with your specific vehicle's tank threads and OEM part numbers. Always check the product details to ensure a proper fit.
What happens if I lose the keys?
If you lose your keys, you may need to replace the entire cap or find a locksmith who can service it. Most caps come with two keys to minimize this risk. Keep one key in a safe place for emergencies.
Can a locking cap cause check engine lights?
A poorly fitting locking cap can cause check engine lights due to pressure issues. Ensure the cap is emission compliant and seals properly. A tight seal prevents air leaks that trigger sensors.
Are aftermarket locking caps as good as OEM?
Aftermarket caps can be just as good as OEM if made from high-quality materials. Look for trusted brands that meet or exceed OEM specifications. Reviews can help verify their reliability and fitment.
How often should I replace a locking gas cap?
You should replace a locking gas cap when the seals degrade or the lock mechanism fails. Regular inspections help identify wear early. Typically, a quality cap lasts several years without issues.
Final Thoughts on Choosing the Best Locking Gas Cap with Keys
Choosing a locking gas cap with keys requires balancing security, fitment, and durability. Our top picks offer reliable solutions for different vehicle types and budgets.
Prioritize caps that match your vehicle's OEM part number to ensure a perfect fit. High-quality materials and proven locking mechanisms provide the best long-term protection.
Always verify current pricing and availability before purchasing as these factors may change. Select the option that best meets your specific security and performance needs.