Car Locking Fuel Cap – Secure, Durable, and Compatible Replacement Protect your fuel tank with this locking fuel cap, designed for Stantcompatible threaded systems. Engineered to OEM part numbers 9MGC791, MGC791, 31778D, 40791, 35039D, 40591, and 10591, it delivers reliable protection against fuel theft and tampering. Key Benefits: **Enhanced Security**: Locking mechanism prevents unauthorized access to your fuel tank, reducing the risk of fuel loss or contamination. **Direct OEM Replacement**: Precisely manufactured to match original equipment specifications for easy, accurate installation. **Secure Fit**: Threaded bottom ensures a tight seal that maintains fuel tank integrity and resists loosening from vibration during driving. **WeatherResistant Durability**: quality plastic construction withstands moisture, salt, temperature changes, and road debris for longterm use in outdoor conditions. **Reliable Compatibility**: Works seamlessly with fuel systems designed for Stant fuel caps and specified part numbers. Applications: 1. **Daily Commuting Vehicles** – Prevents fuel theft in busy urban areas or unattended parking spots. 2. **Fleet Service Vehicles** – Adds security for work trucks or vans that carry valuable fuel for extended routes. 3. **Outdoor Recreational Vehicles** – Maintains a secure seal under rough terrain conditions, preventing spillage or contamination when traveling offroad. Specifications: **Compatibility**: Stantthreaded fuel cap systems, replaces part numbers listed above. **Fitment**: Direct replacement with no modifications required. **Construction Material**: Durable plastic, engineered for outdoor resilience. **Performance**: Resistant to loosening from vibration and designed to seal securely for tank protection. This locking fuel cap offers a practical, dependable solution for safeguarding your fuel supply while delivering the fit, function, and durability you expect from a quality OEMcompatible replacement.