2006 Audi A4 Bulb Size

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Bulbs Chart

Headlight Bulb Low Beam(Cabriolet, with HID headlights) - D2S

Headlight Bulb High Beam(Cabriolet, with halogen headlights) - H9

Headlight Bulb Low Beam(Base, with HID headlights) - D1S

Headlight Bulb Low Beam(Base, with halogen headlights) - H7

Headlight Bulb High Beam(Base) - H7

Stepwell Light Bulb - 2825

Glove Box Light Bulb - 2825

Trunk or Cargo Area Light - 2825

Interior Door Light Bulb - 2825

Courtesy Light Bulb(Cabriolet, Compare to original - Option 1) - 2825


2006 Audi A4 Headlight Bulb Low Beam(Cabriolet, with HID headlights) (D2S)

    Xenon HID Conversion Kit

  • Best Choice for 2006 Audi A4

    Philips D2S Standard Authentic Xenon

    Check out these xenon lighting solutions, the number one choice in authentic Xenon lighting. Philips Xenon HID headlight bulbs provide the same Original Equipment quality as the lights we provide to automakers around the world. Only a burning bulb made of quartz glass (filament 2650°c, glass 800°c) can resist thermal

See more D2S Xenon HID Conversion Kit

2006 Audi A4 Headlight Bulb High Beam(Cabriolet, with halogen headlights) (H9)

    LED Lights

  • #1 Bestseller

    Sealight L2 Series

    Simple installation: it’s been designed as a plug-and-play lighting solution, so does not need the help of a mechanic to fit into most cars. No pain of replacing bulbs often: a maximum level of heat dissipation is achieved when they are in use thanks to the ball-bearing cooling fan, the copper

See more H9 LED Lights

    Halogen Lights

  • Premium Pick

    PIAA 19665 H9 Xtreme White Plus

    If you’re looking for better visibility on your road, then Xtreme White Hybrid bulbs should be at the top of your list. These high-quality glasses and alloy filaments provide more contrast to what can sometimes become dim or dull light from stock lamps so that way not only do they

See more H9 Halogen Lights

2006 Audi A4 Headlight Bulb Low Beam(Base, with HID headlights) (D1S)

    Xenon HID Conversion Kit

  • Best Choice

    Philips D1S Standard Authentic Xenon

    Discover the xenon lighting solutions, one of the popular choices in xenon lighting. These xenon bulbs produce even more light to satisfy the most demanding drivers while maintaining their high Original Equipment quality and superior performance. Make sure to order genuine Original Equipment quality Xenon lighting from Philips, the inventor

See more D1S Xenon HID Conversion Kit

2006 Audi A4 Headlight Bulb Low Beam(Base, with halogen headlights) (H7)

    Halogen Lights

  • Best Choice for 2006 Audi A4

    SYLVANIA H7 SilverStar Ultra

    - Cobalt blue coating provides optimal light transmission and color; - Crisp, white light with the look, feel, and attitude of high-intensity discharge. - These bulbs are DOT-compliant and 100 percent street legal. Whiter light for added clarity gives you brighter headlights, for more downroad.  
  • Premium Pick

    Philips H7 X-tremeVision Up

    Excellent for nighttime drivers -  get up to 100% more vision on the road compared to standard minimum legal requirements in low beam headlamp test results. Original equipment quality seal Maximum light output and ultimate performance
  • Best Value

    PIAA Xtreme White Plus High Performance

    Made from high-quality quartz glass and alloy filaments. The Xtreme White Hybrid bulbs are constructed for long-lasting performance. The alloy filaments are far better at dispersing heat than regular metals. Meaning these bulbs will perform at a higher output for longer amounts of time. Direct replacements for your vehicle's stock bulbs.

See more H7 Halogen Lights

    Xenon HID Conversion Kit

  • Best Overall

    Morimoto Elite HID Kit System

    - Genuine Morimoto Elite HID System - Heavy Duty Double Relay Harness - Pair of High-Quality Morimoto Bulbs

See more H7 Xenon HID Conversion Kit

2006 Audi A4 Headlight Bulb High Beam(Base) (H7)

    Halogen Lights

  • Best Choice for 2006 Audi A4

    SYLVANIA H7 SilverStar Ultra

    - Cobalt blue coating provides optimal light transmission and color; - Crisp, white light with the look, feel, and attitude of high-intensity discharge. - These bulbs are DOT-compliant and 100 percent street legal. Whiter light for added clarity gives you brighter headlights, for more downroad.  
  • Premium Pick

    Philips H7 X-tremeVision Up

    Excellent for nighttime drivers -  get up to 100% more vision on the road compared to standard minimum legal requirements in low beam headlamp test results. Original equipment quality seal Maximum light output and ultimate performance
  • Best Value

    PIAA Xtreme White Plus High Performance

    Made from high-quality quartz glass and alloy filaments. The Xtreme White Hybrid bulbs are constructed for long-lasting performance. The alloy filaments are far better at dispersing heat than regular metals. Meaning these bulbs will perform at a higher output for longer amounts of time. Direct replacements for your vehicle's stock bulbs.

See more H7 Halogen Lights

    Xenon HID Conversion Kit

  • Best Overall

    Morimoto Elite HID Kit System

    - Genuine Morimoto Elite HID System - Heavy Duty Double Relay Harness - Pair of High-Quality Morimoto Bulbs

See more H7 Xenon HID Conversion Kit

2006 Audi A4 Stepwell Light Bulb (2825)

    Halogen Lights

  • Premium Pick

    Sylvania White Mini Bulb

    SYLVANIA LED bulbs deliver a balanced combination of performance and value. Tuners and auto enthusiasts alike can replace their vehicle’s incandescent lights with a bright and long-lasting LED bulb for a unique and modern look simply and cost-effectively. 

See more 2825 Halogen Lights

    LED Lights

  • For Car Dome, Map Door, Courtesy, License Plate Lights

    Marsauto LED Light Bulb 6000K Replacement Bulbs

    – Better beam pattern: each bulb has 5 pcs high power SMD led, color temperature: 6000K(xenon white), voltage: 12V – No polarity no flip: it is truly no polarity, can light on two sides, no need more modification or flip, plug and play, easy install within 5 minutes.  Products with electrical plugs

See more 2825 LED Lights

2006 Audi A4 Glove Box Light Bulb (2825)

    Halogen Lights

  • Premium Pick

    Sylvania White Mini Bulb

    SYLVANIA LED bulbs deliver a balanced combination of performance and value. Tuners and auto enthusiasts alike can replace their vehicle’s incandescent lights with a bright and long-lasting LED bulb for a unique and modern look simply and cost-effectively. 

See more 2825 Halogen Lights

    LED Lights

  • For Car Dome, Map Door, Courtesy, License Plate Lights

    Marsauto LED Light Bulb 6000K Replacement Bulbs

    – Better beam pattern: each bulb has 5 pcs high power SMD led, color temperature: 6000K(xenon white), voltage: 12V – No polarity no flip: it is truly no polarity, can light on two sides, no need more modification or flip, plug and play, easy install within 5 minutes.  Products with electrical plugs

See more 2825 LED Lights

2006 Audi A4 Trunk or Cargo Area Light (2825)

    Halogen Lights

  • Premium Pick

    Sylvania White Mini Bulb

    SYLVANIA LED bulbs deliver a balanced combination of performance and value. Tuners and auto enthusiasts alike can replace their vehicle’s incandescent lights with a bright and long-lasting LED bulb for a unique and modern look simply and cost-effectively. 

See more 2825 Halogen Lights

    LED Lights

  • For Car Dome, Map Door, Courtesy, License Plate Lights

    Marsauto LED Light Bulb 6000K Replacement Bulbs

    – Better beam pattern: each bulb has 5 pcs high power SMD led, color temperature: 6000K(xenon white), voltage: 12V – No polarity no flip: it is truly no polarity, can light on two sides, no need more modification or flip, plug and play, easy install within 5 minutes.  Products with electrical plugs

See more 2825 LED Lights

2006 Audi A4 Interior Door Light Bulb (2825)

    Halogen Lights

  • Premium Pick

    Sylvania White Mini Bulb

    SYLVANIA LED bulbs deliver a balanced combination of performance and value. Tuners and auto enthusiasts alike can replace their vehicle’s incandescent lights with a bright and long-lasting LED bulb for a unique and modern look simply and cost-effectively. 

See more 2825 Halogen Lights

    LED Lights

  • For Car Dome, Map Door, Courtesy, License Plate Lights

    Marsauto LED Light Bulb 6000K Replacement Bulbs

    – Better beam pattern: each bulb has 5 pcs high power SMD led, color temperature: 6000K(xenon white), voltage: 12V – No polarity no flip: it is truly no polarity, can light on two sides, no need more modification or flip, plug and play, easy install within 5 minutes.  Products with electrical plugs

See more 2825 LED Lights

2006 Audi A4 Courtesy Light Bulb(Cabriolet, Compare to original - Option 1) (2825)

    Halogen Lights

  • Premium Pick

    Sylvania White Mini Bulb

    SYLVANIA LED bulbs deliver a balanced combination of performance and value. Tuners and auto enthusiasts alike can replace their vehicle’s incandescent lights with a bright and long-lasting LED bulb for a unique and modern look simply and cost-effectively. 

See more 2825 Halogen Lights

    LED Lights

  • For Car Dome, Map Door, Courtesy, License Plate Lights

    Marsauto LED Light Bulb 6000K Replacement Bulbs

    – Better beam pattern: each bulb has 5 pcs high power SMD led, color temperature: 6000K(xenon white), voltage: 12V – No polarity no flip: it is truly no polarity, can light on two sides, no need more modification or flip, plug and play, easy install within 5 minutes.  Products with electrical plugs

See more 2825 LED Lights

2006 Audi A4 Headlights

2006 Audi A4 Tail Lights

Audi A4 Bulb Size By Years

Picking the right replacement bulbs for a 2006 Audi A4 can feel confusing because sizes vary by function and trim. This bulb size chart exists to remove that guesswork: it lists the recommended bulb types for headlights, fogs, turn signals, brake lights and interior lamps, with assumptions about stock equipment and common trim levels. Use it as a quick reference to match sockets and avoid returns. Before you buy, validate fitment by checking your vehicle manual and visually confirming the existing socket. The chart assumes standard equipment; if your car has aftermarket HID or LED conversions, the trade-off and constraints change and you should measure the housing or consult a professional. Note: some product links are affiliate links. If you purchase through them I may receive a small commission at no extra cost to you, which helps keep this reference maintained.

2006 Audi A4 specs
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