This is a plug and play direct bolt on OE fitment or replacement for the stock unit. This is for a Left side Fog lamp assembly for a 2003-2004 Nissan Frontier. Bulb is included. Fog Lamps are usually a factory option and provide a great auxiliary lighting to complement the headlights. Fog lights are especially useful in bad weather conditions such as rain, snow, and fog or when visibility is reduced. Brings a different appearance to the vehicle that is great for a show car or if you just want to replace your old and worn bumper lights! Our fog lamp mounts to the stock location where they look great and don't affect the aerodynamics.