The TYC 20-9921-00 Headlight Assembly is engineered to provide optimal illumination and safety for the 2017-2019 Toyota Highlander. This left-hand side halogen headlamp assembly is designed to meet or exceed FMVSS 108 standards, ensuring compliance with DOT/SAE regulations. Manufactured with precision, it features OE-comparable fasteners and mounting tabs, facilitating a precise fit and straightforward installation without the need for vehicle modifications. The assembly undergoes rigorous cycling tests to guarantee durability and long-term performance. Produced in facilities certified under ISO9001:2000 and QS9000 standards, the components are crafted with attention to detail, ensuring high-quality construction. The lens is treated with a special coating that prevents hazing and fading, maintaining clear visibility and proper illumination over time. This headlight assembly is a reliable replacement option, offering a cost-effective solution without compromising on quality or safety.