The TYC 18-1201-01 Side Marker Light Assembly is engineered to provide a direct-fit replacement for various Chevrolet and GMC models manufactured between 1978 and 1991, including the 1983 Chevrolet C20. This assembly is designed to meet or exceed FMVSS 108 standards for photometry and safety compliance, ensuring reliable performance and safety. Constructed with high-quality materials, it features a durable ABS plastic housing and a PMMA plastic lens, offering enhanced strength and resistance to environmental factors. The assembly includes a halogen bulb, providing optimal illumination for increased visibility and safety. Installation is straightforward, utilizing OE-comparable fasteners and mounting tabs for precise fitment and hassle-free setup. This design minimizes downtime, allowing for quick replacements and reducing maintenance costs. The TYC 18-1201-01 Side Marker Light Assembly is produced in facilities certified to ISO9001:2000 and QS9000 standards, ensuring precision and quality in every component. By choosing this assembly, fleet operators can maintain vehicle safety and compliance with industry standards, contributing to the overall efficiency and reliability of their operations.