The 2008-2011 Mercury Mariner Tail Light Left (Driver Side) OEM is a complete assembly that includes the necessary bulbs. It is designed specifically for the left side of the vehicle, making it a perfect fit for drivers looking to replace or upgrade their tail light. As an original equipment manufacturer (OEM) part, this tail light assembly meets the standards set by the Mercury brand for quality and compatibility. With this product, drivers can ensure their vehicle's lighting system is in top condition and functioning at its best.