Audi S4 2012 Bulb Size
Bulb size chart
This 2012 Audi S4 bulb size guide helps you verify the correct bulbs by lighting position, so you can match the right part before you buy. Whether you are replacing an exterior lamp, a cabin light, or a cargo-area bulb, checking the location on the vehicle is the easiest way to confirm fitment for your S4.
The 2012 Audi S4 uses a mix of LED and conventional bulbs depending on the lamp position, and some lighting details can vary by market, trim, and body style. Use this page as a quick reference for the most common bulb sizes on the 2012 S4, including headlights, fog lights, turn signals, license plate lights, and interior bulbs.
For best results, compare the bulb listed here with the one already installed in your car before ordering, especially if your S4 has a different lighting package or has been modified. Some positions may use LED assemblies from the factory, while others may accept halogen-style or LED replacement bulbs depending on the housing. If you are considering an aftermarket LED conversion, make sure the bulb type, connector, and housing depth are compatible, and remember that fitment can differ between sedan, wagon, and market-specific versions. Checking the installed bulb first can save time and prevent buying the wrong part.
FAQ
What bulb size does the 2012 Audi S4 use for the low beam and high beam headlights?
The 2012 Audi S4 uses D3S for both the high beam and low beam headlight bulb listing on this page.
What is the reverse light bulb size for a 2012 Audi S4?
The back up reverse light bulb is listed as 921 for the 2012 Audi S4.
What bulb does the front fog light use on the 2012 Audi S4?
The front fog light bulb is listed as H11 LED or H16 LED, depending on the vehicle setup and lighting configuration.
What bulb size is used for the rear turn signal on this model year?
The rear turn signal light bulb is listed as 7506 for the 2012 Audi S4.
What bulb size is used for the front turn signal on a 2012 Audi S4?
The front turn signal light bulb is listed as 12272NA on this page.
Are the brake lights and tail lights on the 2012 Audi S4 LED?
Yes, the brake light bulb and tail light bulb are listed as LED for this model year.
What bulb is used for the center high mount stop light?
The center high mount stop light bulb is listed as LED on the 2012 Audi S4.
What are the interior bulb sizes for the map light, glove box, trunk, and door lights?
Those interior positions are listed with 2825 or 98 for the glove box light, trunk or cargo area light, map light, interior door light, and side marker light front.
What bulb size is used for the license plate light and vanity mirror light?
Both the license plate light bulb and vanity mirror light bulb are listed as 6418.
Does the 2012 Audi S4 use the same bulb for daytime running lights?
The daytime running light bulb is listed as LED on this page, but the exact setup can vary by market and lighting package.
Why might my 2012 Audi S4 bulb size differ from this page?
Trim, body style, market region, and lighting package can all affect bulb fitment. Some cars may have different lamp assemblies or factory LED units, so it is important to verify the bulb in your vehicle before ordering.
Can I switch my 2012 Audi S4 to LED bulbs if it did not come with them?
In some positions, yes, but fitment depends on the housing, connector, and electrical compatibility. Aftermarket LED conversions may require the correct bulb shape and may not work properly in every lamp position without additional hardware.