The TYC 20-9138-00 Headlight Assembly is engineered to provide reliable illumination for the 2011-2020 Toyota Sienna's left driver side. This assembly features a halogen bulb type, ensuring optimal visibility during night driving and adverse weather conditions. Designed with OE-comparable fasteners and mounting tabs, it offers precise fitment and hassle-free installation, eliminating the need for vehicle modifications. The housing is constructed from durable plastic, and the lens is made of clear and amber plastic, providing a clear view and enhancing the vehicle's aesthetic appeal. The assembly includes all necessary bulbs: low beam, high beam, and front signal light, all halogen type, ensuring immediate functionality upon installation. Compliant with DOT and SAE standards, this headlight assembly meets or exceeds FMVSS 108 regulations for photometry and safety compliance, ensuring proper illumination and safety. The lens is treated with a special coating to prevent hazing and fading, maintaining clear visibility over time. Manufactured in facilities certified to ISO9001:2000 and QS9000 standards, this assembly undergoes rigorous cycling tests to ensure quality and durability, providing a dependable lighting solution for your vehicle.