Universal non-locking fuel cap designed for vacuum-sealed fuel systems across multiple vehicle brands including Audi, Ford, Honda, Mazda, Mitsubishi, and Nissan. This replacement cap features a secure fit without locking mechanism, making it ideal for vehicles that rely on vacuum pressure to maintain fuel system integrity. Easy to install and compatible with standard fuel tank openings on these popular makes. Essential spare part for maintaining proper fuel system function and preventing fuel evaporation.