Audi S8 2009 Bulb Size
Bulb size chart
The 2009 Audi S8 uses a mix of HID, LED, and conventional bulb types, so the exact replacement depends on the lighting position. This page is designed to help you verify bulb sizes by lighting position before you buy, making it easier to match the correct bulb for headlights, interior lights, and exterior signal lamps.
Because Audi offered different trim and lighting combinations by market and body style, the bulb list for a 2009 S8 can vary in some areas. Use the fitment information here as a practical guide for checking the bulbs in your car and confirming the correct replacement for each location.
For the best fit, compare the bulb in your vehicle against the listing before ordering, especially if your S8 has an optional lighting package or has been modified. Some positions may use LED assemblies from the factory, while others use replaceable bulbs, and aftermarket LED conversions can change the required base or connector style. If your car has been repaired before, do not assume every socket matches the original specification; checking the installed bulb is the safest way to avoid a mismatch.
FAQ
What bulb does the 2009 Audi S8 use for the low beam and high beam headlights?
The listed headlight bulb for both high beam and low beam is D2S. This is the key bulb to verify first if you are replacing the main front lighting on a 2009 Audi S8.
What is the front fog light bulb size on a 2009 Audi S8?
The front fog light bulb is listed as H11 LED or H16 LED. Because both are shown, you should confirm the bulb currently installed in your vehicle before ordering.
What bulb fits the daytime running lights on this model year?
The daytime running light bulb is listed as 7506 for the 2009 Audi S8.
What size is the back up reverse light bulb?
The back up reverse light bulb is listed as 5008.
Which bulb is used for the license plate lights?
The license plate light bulb is listed as 6418.
What bulb fits the vanity mirror lights?
The vanity mirror light bulb is listed as 6418, the same size shown for the license plate lights.
What bulb is used for the dome light and map lights?
Both the dome light bulb and the map light bulb are listed as 64132.
What are the bulb sizes for the parking lights, glove box light, trunk light, stepwell light, and one courtesy light option?
Those positions are listed with 2825 or 98 bulbs, including the parking light, glove box light, trunk or cargo area light, stepwell light, and courtesy light option 1.
Are the brake lights, tail lights, turn signals, and center high mount stop light replaceable bulbs?
On this page they are listed as LED for the center high mount stop light, brake light, tail light, turn signal light rear, interior door light, and rear side marker light. That usually means the lighting is LED-based rather than a simple standard bulb swap.
Why does the bulb fitment for a 2009 Audi S8 vary by market or trim?
Trim and lighting package can vary by market and body style, so some bulb positions may differ from one vehicle to another. That is why it is important to verify the bulb by location instead of relying only on the model year.
Can I switch halogen bulbs to LED in my 2009 Audi S8?
Some positions on this page already list LED, while others use bulbs such as D2S, 7506, 6418, 64132, 2825, or 98. If you plan an aftermarket LED conversion, check the socket, fitment depth, and compatibility before buying.
What should I check before replacing a bulb on my Audi S8?
Check the installed bulb, the socket style, and whether your car has factory LED or HID equipment. This is especially important for the 2009 Audi S8 because several lighting positions can differ depending on package and previous repairs.