For the 2009 Ford Mustang, headlight bulb fitment depends on the headlight type. Models with halogen headlights use an H13 bulb for both the low beam and high beam. Models with HID headlights use a D3R bulb for both functions. Confirm the headlight system before ordering, since H13 and D3R applications are not interchangeable.
Fog light listings include H11 LED and H16 LED options. Front turn signal and parking light fitment varies by configuration: Base models use 3157, while the Shelby GT500 uses 3156. The reverse light and center stop light use 921 bulbs. Tail and brake lights use 4057R, while the rear turn signal uses 4057.
Other listed bulbs include 168 or 917 for the license plate, 2825 or 98 for the front and rear side markers and map lights, and 211-2 for the trunk light. Check the vehicle trim and existing bulb before replacement.