This is a genuine Ford tail light assembly for the Mustang model years 15-18. It is designed for the left side of the vehicle and is the OEM replacement part. The assembly is in stock number 277179 and has an interchange number of 166-2746B. The VIN number associated with this part is 1FA6P8THXG5277179. This tail light assembly is perfect for those looking for a high-quality replacement part for their Mustang.