This OEM front left side door lock latch actuator is designed for 07-13 Mercedes W221 S550 CL550 models. It is a genuine, original equipment manufacturer (OEM) part with interchange and OE/OEM part numbers A2217207135, A2217200535, and A2217204735. The manufacturer part numbers are 2217204735 / A2217204735 / A 221 720 47 35 4735, 2217207135 / A2217207135 / A 221 720 71 35 7135, and 2217200535 / A2217200535 / A 221 720 05 35 0535. This replacement door lock latch actuator fits the left driver side and includes finish, placement on vehicle, and superseded part numbers information. It is compatible with S-Class CL-Class Mercedes Benz MB OEM Original, CL550 CL600 CL63 CL65 AMG, S350 S400 S450 S550 S600 S63 S65 AMG, and 2013 models.