Audi TT 2009 Bulb Size
Bulb size chart
This 2009 Audi TT bulb size guide helps you verify the correct replacement bulbs by lighting position, so you can match the right part to the right socket before you buy. Because the TT could be equipped with different lighting packages, the bulb list may vary by trim, body style, and market.
Use this page as a quick reference for exterior and interior lights on the 2009 Audi TT, including headlights, fog lights, turn signals, brake lights, license plate lights, and cabin bulbs. Checking the bulb location first is the easiest way to avoid ordering the wrong size or style.
For best fitment, compare your TT’s equipment before ordering. Halogen and HID headlight setups use different bulbs, and some positions also change depending on whether the car has the standard lighting package or an upgraded one. If you are converting to aftermarket LED bulbs, make sure the bulb base, polarity, and physical clearance are correct, since some LED replacements may fit electrically but not physically in the housing. When possible, remove the installed bulb and confirm the number printed on the base before purchase, especially for trim-sensitive items like parking lights, side markers, and front turn signals.
FAQ
What headlight bulb does a 2009 Audi TT use?
The high beam and low beam headlight bulb listed for the 2009 Audi TT is D1S. This applies to the HID headlight setup shown for this model year.
Does the front turn signal bulb change by headlight type?
Yes. With HID headlights, the front turn signal bulb is 7507. With halogen headlights, the front turn signal bulb is 64136.
What bulb is used for the rear turn signal on the 2009 Audi TT?
The rear turn signal bulb is 921.
What bulb fits the backup reverse light?
The back up reverse light bulb is 921.
What are the brake and tail light bulb sizes?
Both the brake light bulb and the tail light bulb are listed as 7506R for the 2009 Audi TT.
What bulb is used for the daytime running light?
The daytime running light bulb is 7506.
What bulb fits the front fog lights?
The front fog light bulb is listed as H11 LED or H16 LED, depending on the exact setup on the car.
What bulb is used for the license plate lights?
The license plate light bulb is 6418.
What bulb fits the courtesy lights?
The courtesy light bulb is 6418.
What bulb is used for the glove box and trunk or cargo area lights?
Both the glove box light bulb and the trunk or cargo area light bulb are listed as 2825, 98.
What bulb fits the map lights?
The map light bulb is 2825, 98.
What are the parking light and front side marker bulb sizes?
With HID headlights, both the parking light bulb and the front side marker bulb are 64132. With halogen headlights, both positions use 2827.
Can trim or market differences affect bulb fitment on this car?
Yes. The 2009 Audi TT can vary by trim, lighting package, body style, and market, so the exact bulb in a given position may differ from another TT of the same year.
Should I check the old bulb before ordering a replacement?
Yes. Checking the installed bulb is one of the best ways to confirm fitment, especially if the car has been modified or if you are unsure whether it has HID, halogen, or an LED conversion.