2021 Audi A4 allroad Headlight Bulb Size
The 2021 Audi A4 allroad headlights have a single bulb size (D5S) for high and low beams.
Using the 2021 Audi A4 allroad bulb chart below, you can quickly identify the correct replacement lamp for all 17 positions of its lighting system.
Fog Light Bulb Front - LED
“LED” means it is impossible to replace the bulb. Need to change the whole unit.
Headlight Bulb High Beam - D5S
Headlight Bulb Low Beam - D5S
Center High Mount Stop Light Bulb - LED
“LED” means it is impossible to replace the bulb. Need to change the whole unit.
Brake Light Bulb - LED
“LED” means it is impossible to replace the bulb. Need to change the whole unit.
Turn Signal Light Bulb Front - 12181NA
Parking Light Bulb - LED
“LED” means it is impossible to replace the bulb. Need to change the whole unit.
Tail Light Bulb - LED
“LED” means it is impossible to replace the bulb. Need to change the whole unit.
Daytime Running Light Bulb - LED
“LED” means it is impossible to replace the bulb. Need to change the whole unit.
Turn Signal Light Bulb Rear - LED
“LED” means it is impossible to replace the bulb. Need to change the whole unit.
Back Up Reverse Light Bulb - LED
“LED” means it is impossible to replace the bulb. Need to change the whole unit.
Side Marker Light Bulb Front - LED
“LED” means it is impossible to replace the bulb. Need to change the whole unit.
Side Marker Light Bulb Rear - LED
“LED” means it is impossible to replace the bulb. Need to change the whole unit.
Cornering Light Bulb - H8
Vanity Mirror Light Bulb - LED
“LED” means it is impossible to replace the bulb. Need to change the whole unit.
Glove Box Light Bulb - 2821
Trunk or Cargo Area Light - LED
“LED” means it is impossible to replace the bulb. Need to change the whole unit.
Replacement Bulb Size for the 2021 Audi A4 allroad
Considering an upgrade from the Halogen to LED or HID headlights? Find below aftermarket replacements for OEM bulbs compatible with the 2021 Audi A4 allroad's housing. Note that you may need additional equipment to install LED or Xenon bulbs despite the correct bulb size of the lamp.
2021 Audi A4 allroad High Beam bulb size - D5S
LED Lights
Upgrade your vehicle's lighting system with these LED headlight bulb kits and enjoy a focused and wider beam, better visibility, and enhanced clarity. With high-quality and...
Product review
Xenon HID Conversion Kit
- Get up to 200% more vision on the road.
- Consumes less energy and enhances visibility on the road.
- Original equipment quality with an Electronic high voltage starter...
Product review
2021 Audi A4 allroad Low Beam bulb size - D5S
LED Lights
Upgrade your vehicle's lighting system with these LED headlight bulb kits and enjoy a focused and wider beam, better visibility, and enhanced clarity. With high-quality and...
Product review
Xenon HID Conversion Kit
- Get up to 200% more vision on the road.
- Consumes less energy and enhances visibility on the road.
- Original equipment quality with an Electronic high voltage starter...
Product review
2021 Audi A4 allroad Cornering Light bulb size - H8
LED Lights
Upgrade to the LUXSTER H8 Ultra Bright LED Bulbs – where durability meets cutting-edge illumination.
Engineered for resilience, these bulbs come with an IP68 waterproof rating,...
Product review
Laxmas LED light Bulbs are a perfect replacement for stock halogen bulbs, offering substantial advantages in brightness, longevity, and operational temperature, along with superior energy...
Product review
Xenon HID Conversion Kit
Powerful light output and improved performance provide you with the best lighting experience, giving performance-oriented drivers additional safety time and comfort when driving. Original equipment...
Product review
2021 Audi A4 allroad Glove Box bulb size - 2821
LED Lights
WLJH LED bulbs are a simple and cost-effective way to upgrade your vehicle's Instrument Panel lighting. Replace your old dingy incandescent bulbs with a long-lasting...
Product review
Introducing the TUINCYN 2821 LED White Light Bulb, a premium lighting solution that combines efficiency, durability, and stunning illumination. Designed with meticulous attention to detail,...
Product review
Audi A4 allroad 2021 bulb size chart specifies the recommended bulb part numbers and types for all positions of its lighting system, like headlights, fog lights, brake lights, side markers, etc.
If you want to upgrade the headlights, the aftermarket bulb you select has to be the exact size your Audi A4 allroad 2021 requires to fit into the housing and match the wattage and voltage specifications.
LightningLab project pulls information about the 2021 Audi A4 allroad bulb sizes from the vehicle's manual and leading automotive lighting suppliers. All the data is classified and fact-checked by our editorial team.
The following chart with the 2021 Audi A4 allroad bulb sizes is provided for informative purposes only. Consult the owner's manual or contact the dealership to double-check the correct bulb type, wattage, voltage, and whether it requires any additional equipment or modifications to be installed on the specific 2021 Audi A4 allroad trim.
Ensure the bulb is "DOT" compliant to avoid legal issues.
FAQs
How to replace the 2021 Audi A4 allroad headlight bulb?
First things first, you'll need the right 2021 Audi A4 allroad bulb size. Of course, you may consult the owner's manual, but let's be honest, that's as dull. Instead, just look at the chart above or remove the old bulb to see its size. It's not rocket science; it's more like... bulb science.
Follow the simple step-by-step instructions:
- 1) Park the 2021 Audi A4 allroad on an even surface and turn off the ignition.
- 2) Open the hood and pop it up.
- 3) Pull the lock bar up and out of the clip to fix the hood.
- 4) Identify the back of the headlight assembly where the bulb is housed.
- 5) You may need to remove other components to access it.
- 6) Locate the electrical connector at the back of the headlight compartment.
- 7) Press down on the locking tab and pull the connector away from the bulb.
- 8) Remove the Old Bulb. Depending on your trim, you may need to:
- a) Unscrew a retaining ring
- b) Unclip a metal pin
- c) Rotate the bulb counterclockwise
- 9) Insert the new bulb without touching the glass.
- 10) Plug the electrical connector back, making sure it clicks into place.
- 11) Turn on the headlights to test the new bulb.
- 12) You may need to aim your headlights.
Reviewed by Brent Ordway
Brent Ordway is an ASE-certified car technician. He has been working on cars since he was a teenager and loved helping people keep their vehicles running smoothly. Brent's skills as a mechanic are unrivaled. In 2022, he earned his place on the list of winners for the ASE Master Automobile Technician of the Year award.
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Audi A4 allroad Bulb Chart By Years
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