Mercedes S Class S 450 550 600 07 08 09 10 11 Side Marker Lamp Lh 221 820 01 21 OEM comparable design to ensure the structural fitment and strength. Exact replacement for factory OEM unit, no modification needed. Assembly meets or exceeds DOT & SAE standards Picture could be Left or Right for demonstration purpose only. LH=USA Driver Side / RH=USA Passenger Side / LH=RH Unit for Either Side / P=Include Both Side(LH&RH) / FLH=Front Driver Side / FRH=Front Passenger Side / RLH=Rear Driver Side / RRH=Rear Passenger Side