The TYC 20-5652-00 Left Headlight Assembly is engineered to provide a direct-fit replacement for the 1999-2001 Toyota 4Runner, ensuring seamless integration and reliable performance. This assembly includes a clear glass lens, halogen bulbs, and a durable plastic housing, all designed to meet or exceed OEM specifications. The lens features a special coating that prevents hazing and fading, maintaining optimal illumination over time. The housing is constructed from high-quality plastic, offering resilience against various weather conditions. The assembly is DOT/SAE compliant, adhering to FMVSS 108 standards for photometry and safety compliance. It includes OE-comparable fasteners and mounting tabs for precise fitment and hassle-free installation. Rigorous cycling tests ensure quality and durability, and the product is produced in facilities certified to ISO9001:2000 and QS9000 standards. This headlight assembly is designed to provide clear and focused illumination, enhancing nighttime visibility and overall driving safety. Its durable construction and compliance with safety standards make it a reliable choice for fleet operations, ensuring that vehicles are equipped with high-quality lighting components that meet industry standards.