Lexus 81185-53A00 Headlight Assembly

This genuine Lexus headlamp assembly (part number 81185-53A00) is a direct replacement for the left (driver) side headlight on 2021-2025 Lexus IS300, IS350, and IS500 sedans equipped with Bi-LED lighting. The unit utilizes a single-beam LED configuration for low beam operation; high beam function is not integrated into this module. The assembly includes the housing, lens, internal LED light sources, and mounting brackets. It is designed to meet DOT and SAE photometric standards for road legal use. The housing features original-style coloration and mounting tab geometry for precise fitment to the vehicle front structure. No separate ballast or control module is included; the unit connects directly to the vehicle wiring harness. Installation requires verification of all mounting tabs for integrity, as plastic tabs are susceptible to damage during removal or minor impact. Compatible engine variants include the 2.0L turbocharged inline-four (8AR-FTS) on IS300 models and the 3.5L V6 (2GR-FKS) on IS350 and IS500 models.