Audi A4 2009 Bulb Size
Bulb size chart
This page helps you verify the bulb sizes for the 2009 Audi A4 by lighting position, so you can match the correct replacement before you buy. Because the A4 could be equipped with different lighting packages, the exact bulb type may vary between trims, body styles, and markets.
Use the chart to compare each exterior and interior lamp location, including headlights, brake lights, reverse lights, license plate lights, and cabin bulbs. That makes it easier to confirm the right fit for your specific 2009 Audi A4 and avoid ordering the wrong part.
Fitment can change based on trim, package, and whether your car has halogen or HID headlights, so always compare the bulb position on the vehicle with the listing on this page. Some locations use LED assemblies or LED-style replacements, while others use traditional bulb types such as 921, D3S, 2825/98, 6411/6428, 6418, 7506, 7506R, H11 LED, H16 LED, or 12272NA depending on the lamp. If you are considering an aftermarket conversion, make sure the bulb matches the socket, size, and electrical requirements, and check the installed bulb before purchase whenever possible.
FAQ
What bulb size does the 2009 Audi A4 use for the low and high beams?
For the 2009 Audi A4, the headlight bulb listed for both high beam and low beam is D3S on the HID-equipped setup shown here.
Which bulb fits the front turn signal on a 2009 Audi A4?
The front turn signal bulb listed for this model year is 12272NA.
What is the reverse light bulb size for the 2009 Audi A4?
The back up reverse light bulb is 921.
What bulb does the license plate light use?
The license plate light bulb listed for the 2009 Audi A4 is 6418.
Are the interior map, glove box, trunk, and door lights the same size?
Yes. The glove box light, trunk or cargo area light, map light, interior door light, and side marker light front are all listed as 2825, 98.
What bulb size is used for the dome light and vanity mirror light?
The dome light bulb is listed as 6411, 6428, and the vanity mirror light bulb is listed as 6418.
What bulb fits the front fog lights?
The front fog light bulb is listed as H11 LED or H16 LED, depending on the specific lighting setup.
Which bulb is used for the rear turn signal?
The rear turn signal light bulb is 7506.
What bulb is used for the brake and tail lights on halogen headlight models?
For 2009 Audi A4 models with halogen headlights, both the brake light bulb and tail light bulb are listed as 7506R.
What bulb is used for the brake and tail lights on HID headlight models?
For 2009 Audi A4 models with HID headlights, both the brake light bulb and tail light bulb are listed as LED.
Does the 2009 Audi A4 have different bulb sizes depending on trim or market?
Yes. Trim level, lighting package, body style, and market can affect bulb fitment, so it is important to confirm the exact lamp position on your vehicle.
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 your car has been modified or if you are unsure whether it has halogen or HID lighting.