The TYC 20-6520-00-9 Headlight Assembly is engineered to provide a reliable and precise replacement for the left-side headlight in 2004-2007 Nissan Titan and Pathfinder models. This assembly is designed to meet or exceed the standards set by the Department of Transportation (DOT) and the Society of Automotive Engineers (SAE), ensuring compliance with the Federal Motor Vehicle Safety Standards (FMVSS 108) for photometry and safety. Manufactured in facilities certified under ISO9001:2000 and QS9000, 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 assembly includes both high and low beam halogen bulbs, with the low beam utilizing HB3/HB4 bulb types and the high beam using HB5 bulb type. The housing and lens are constructed from durable plastic materials, ensuring longevity and resistance to environmental factors. Designed with Original Equipment (OE) comparable fasteners and mounting tabs, the assembly allows for precise fitment and hassle-free installation, eliminating the need for vehicle modifications. This headlight assembly serves as a direct replacement for the factory unit, restoring the vehicle's lighting system to its original performance and appearance. By choosing the TYC 20-6520-00-9 Headlight Assembly, fleet operators can ensure that their vehicles maintain optimal visibility and safety standards, thereby enhancing operational efficiency and reducing potential downtime due to lighting issues.