Audi TT 2012 Bulb Size
Bulb size chart
This 2012 Audi TT bulb size guide is designed to help you verify the correct bulb by lighting position before you buy replacement parts. Whether you are changing a headlight, a turn signal, or an interior lamp, matching the bulb to the exact location is the safest way to avoid fitment mistakes.
The 2012 Audi TT uses different bulb types depending on the lamp position, and some items can vary by trim, body style, or lighting package. Use this page to compare the bulb chart for the front, rear, interior, and exterior lights so you can find the right replacement faster.
For the best fit, always confirm your trim and lighting setup before ordering, especially if your TT has a different market specification, optional equipment, or a previous owner’s aftermarket modifications. Some lighting positions may use halogen bulbs in one version and LED components in another, and aftermarket conversions can change the original bulb requirements. If a bulb is hard to identify from the chart alone, remove the installed bulb and check the number printed on the base before purchasing a replacement. That is especially useful for items like the headlight, fog light, parking light, and interior bulbs, where small differences can affect compatibility.
FAQ
What bulb does the 2012 Audi TT use for low beam headlights?
The 2012 Audi TT uses a D1S bulb for the low beam headlight position.
What bulb fits the high beam headlights on a 2012 Audi TT?
The high beam headlight bulb listed for the 2012 Audi TT is D1S.
What is the front turn signal bulb size on a 2012 Audi TT?
Front turn signal bulbs are listed as 7507 or 64136, depending on the lighting setup.
What bulb is used for the rear turn signal on this model year?
The rear turn signal bulb for the 2012 Audi TT is 921.
What bulb size is used for the reverse light?
The back up reverse light bulb listed for the 2012 Audi TT is 921.
What bulb fits the license plate lights?
The license plate light bulb for the 2012 Audi TT is 6418.
What bulb is used for the map lights and glove box light?
The map light bulb and glove box light bulb are both listed as 2825.
What bulb fits the trunk or cargo area light?
The trunk or cargo area light bulb for the 2012 Audi TT is 2825.
What bulb is used for the courtesy lights?
The courtesy light bulb listed for the 2012 Audi TT is 6418.
What are the parking light and front side marker bulb sizes?
The parking light bulb and front side marker bulb are listed as 64132 or 2827.
What bulb does the brake light use?
The brake light bulb for the 2012 Audi TT is 7506.
What bulb is used for the tail light and daytime running light?
The tail light bulb and daytime running light bulb are both listed as 7506.
What bulb fits the front fog lights?
The front fog light bulb listed for the 2012 Audi TT is H7.
Does the center high mount stop light use a replaceable bulb?
The center high mount stop light is listed as LED, so it may not use a standard replaceable bulb like the other positions.
Why should I check the bulb by position instead of buying by model alone?
The 2012 Audi TT can vary by trim, body style, market, and lighting package, so the correct bulb depends on the exact lamp position and equipment on the car.