The TYC 19-5974-00-9 Left Driver Side Fog Light Assembly is engineered to provide optimal illumination and safety for various Lexus and Toyota vehicles, including the 2010-2020 Lexus CT200h, IS250, IS350, and the 2010-2020 Toyota 4Runner, Avalon, Sienna, and Tacoma. This fog light assembly is designed to meet or exceed the Federal Motor Vehicle Safety Standard (FMVSS) 108, ensuring compliance with Department of Transportation (DOT) and Society of Automotive Engineers (SAE) regulations. Manufactured in facilities certified under ISO9001:2000 and QS9000 standards, the assembly undergoes rigorous cycling tests to guarantee quality and durability. The assembly includes a halogen bulb, providing bright and effective lighting, and features a clear glass lens and plastic housing for enhanced durability. The screw-in attachment method ensures a secure and straightforward installation, with OE-comparable fasteners and mounting tabs for precise fitment. This fog light assembly is a direct replacement for the original equipment, requiring no vehicle modifications, and is backed by a limited lifetime warranty against defects in materials and workmanship.