
Flosser Incandescent BAY9s H21W 21W Stock 6021 12356 6413...
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Used for: Fog Light Bulb Rear
Used for: Headlight Bulb High Beam(with halogen headlights), Daytime Running Light Bulb(with halogen headlights)
Used for: Headlight Bulb High Beam(with HID headlights)
Used for: Back Up Light Bulb(Compare to original - Option 1), Turn Signal Light Bulb Front(with halogen headlights)
Used for: Brake Light Bulb(with halogen headlights)
Used for: Parking Light Bulb(with halogen headlights), Dome Light Bulb, Glove Box Light Bulb, Interior Door Light Bulb, Map Light Bulb, Trunk or Cargo Area Light
Used for: Parking Light Bulb(with halogen headlights), Dome Light Bulb, Glove Box Light Bulb, Interior Door Light Bulb, Map Light Bulb, Trunk or Cargo Area Light
Used for: Tail Light Bulb(with halogen headlights)
Used for: Turn Signal Light Bulb Rear(with halogen headlights)
Used for: Vanity Mirror Light Bulb
This 2017 Audi A3 bulb size page is organized by lighting position so you can quickly verify the correct bulb for each exterior and interior lamp. Whether your car has halogen, HID, or LED headlights, the fitment can change by trim and lighting package, so checking the exact location is the safest way to match the right replacement.
Use this guide to identify common bulbs for the 2017 Audi A3, including low beam, high beam, turn signal, brake light, license plate, dome, map, and cargo area lights. The listings below help narrow down the correct bulb size before you buy, which is especially useful when your A3 uses different parts depending on body style or market.
Fitment on the 2017 Audi A3 can vary a lot by trim, package, and headlight type, so always confirm whether your car has halogen, HID, or factory LED lighting before ordering. Some positions use different bulb types on halogen versus LED-equipped cars, and aftermarket LED conversions may require a different bulb or additional hardware to work correctly. If you are unsure, check the bulb already installed in the vehicle and compare it to the listing on this page before purchasing replacements.
No. Trim level, lighting package, and even market can change the bulb type. The 2017 Audi A3 may use different bulbs for halogen, HID, and LED headlights, so the correct fitment depends on your exact configuration.
For A3 models with LED headlights, the low beam is listed as LED. If your car has a different headlight setup, verify the exact headlight type before buying a replacement.
The high beam bulb for 2017 Audi A3 models with halogen headlights is H15.
The high beam bulb for the HID headlight setup is D3S.
The daytime running light bulb for halogen headlight models is H15.
The rear turn signal bulb for halogen headlight models is 5008.
The front turn signal bulb for halogen headlight models is 64132.
The brake light bulb for halogen headlight models is 7440R.
Two backup light options are listed: 64132 for one original-equipment comparison option and LED for the other listed option. Check your installed bulb or the vehicle’s lighting setup before ordering.
The license plate light bulb is listed as LED on this page.
Several interior and utility lights use 2825 or 98, including the glove box light, trunk or cargo area light, dome light, map light, interior door light, and parking light on halogen-headlight models.
The vanity mirror light bulb is 6418.
Yes. LED-equipped models list LED tail light bulbs, while halogen-headlight models use 921 for the tail light bulb.
Yes. That is the best way to avoid ordering the wrong part, especially on a 2017 Audi A3 where lighting equipment can vary by trim, package, and body style.