Dual Left and Right Reversing Turn Signal Rearview Mirror Side Light for MercedesBenz CClass W203 (0307) Compatibility Fits MercedesBenz CClass W203 models from 2003 to 2007 Replaces left and right rearview mirror turn signal lights Part numbers A2038201521 and A2038201621 Material and durability Made from ABS material for sturdiness and long service life Resistant to deformation and bending under daily use Visibility and safety Provides clear signaling in conditions with limited visibility such as fog, rain, snow, and mist Helps other drivers see your turning intention, enhancing driving safety Installation Plugandplay installation Direct replacement for the original turn signal lights No modification, trimming, cutting, or drilling required Quick and straightforward to complete Use scenarios Replacing worn or damaged mirror turn signal lights to restore full function Upgrading to improve conspicuity in adverse weather conditions Convenience upgrade during routine maintenance to maintain vehicle safety features Note Engineered to maintain compatibility with the specified part numbers and vehicle models without altering other systems.