Product Details: The TYC 20-6658-00-9 Headlight Assembly is engineered to provide a reliable and cost-effective solution for replacing the left-side headlight on 2005-2006 Toyota Tundra Double Cab models. This assembly is designed to meet or exceed DOT/SAE standards, ensuring compliance with FMVSS 108 regulations for photometry and safety. Manufactured in facilities certified to ISO9001:2000 and QS9000 standards, the assembly undergoes rigorous cycling tests to guarantee quality and durability. The lens features a special coating that prevents hazing and fading, maintaining optimal illumination and safety over time. The housing is constructed from durable plastic, and the assembly includes both low and high beam halogen bulbs (H4), facilitating straightforward installation without the need for vehicle modifications. This headlight assembly serves as a direct replacement for the original equipment, offering OE-comparable fasteners and mounting tabs for precise fitment and hassle-free installation. By choosing the TYC 20-6658-00-9 Headlight Assembly, fleet operators can ensure consistent and reliable lighting performance, contributing to enhanced vehicle safety and operational efficiency.