This locking gas cap is designed for 1978–1990 Jeep CJ5, CJ7, CJ8 Scrambler, and Wrangler YJ models, providing a direct replacement for OE part number 5350828 and aftermarket reference 17726.06. It helps secure the fuel system while maintaining proper sealing. The locking mechanism prevents unauthorized access to the fuel tank, while the cap itself maintains proper pressure and helps prevent fuel evaporation. Over time, original caps can wear out, lose sealing ability, or fail to lock properly. Engineered for a precise fit, this cap installs in the factory filler neck and operates with a key for added security. Constructed from durable materials with a black finish, this component is designed to withstand fuel exposure and environmental conditions while maintaining a secure seal. Ideal for replacing a worn or non-locking cap, this component helps protect your fuel system, reduce evaporation, and maintain proper tank sealing.