This is a genuine OEM left rear driver quarter glass window for Honda Civic 2016-2021. It is designed to fit perfectly and provide clear vision for safe driving. The glass is tinted black for privacy and to block out unnecessary light. This part is compatible with specific Honda Civic models and part numbers including 73550-TBA-A016-M4 / 73550 TBA A016 M4 / 73550TBAA016M4. It is not a vintage part, but a reliable replacement for your damaged or missing rear quarter window. Trust in the quality of this genuine OEM part and enjoy a safe and comfortable ride.