2009 Audi S4 Headlight Bulb Size
By clicking the link you will be redirected to Amazon. The aftermarket bulbs & headlights below may improve the illumination of your vehicle and make it stand out from the crowd.
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Headlight Bulb High Beam and Low Beam - D3S
Fog Light Bulb Front - H11 LED
License Plate Light Bulb - 6418
Back Up Reverse Light Bulb - 921
Side Marker Light Bulb Front - 2825
Vanity Mirror Light Bulb - 6418
Glove Box Light Bulb - 2825
Trunk or Cargo Area Light - 2825
Map Light Bulb - 2825
Interior Door Light Bulb - 2825
Courtesy Light Bulb(Compare to original - Option 1) - 2825
Courtesy Light Bulb(Compare to original - Option 2) - 6418
The 2009 Audi S4 bulb size chart specifies the recommended lamp part numbers and types for all positions of its electrical system, like headlights, fog lights, brake lights, side markers, etc. If you want to upgrade the headlights, the aftermarket bulb you select has to be the exact size your 2009 Audi S4 requires to fit into the housing and match the wattage and voltage specifications. Pay special attention to the marking and make sure the bulb is “DOT” compliant to avoid legal issues.