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2012 Audi S4 Bulb Size

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Bulbs Chart

Headlight Bulb High Beam and Low Beam - D3S

Back Up Reverse Light Bulb - 921

Side Marker Light Bulb Front - 2825

Glove Box Light Bulb - 2825

Trunk or Cargo Area Light - 2825

Map Light Bulb - 2825

Interior Door Light Bulb - 2825


2012 Audi S4 Headlight Bulb High Beam and Low Beam (D3S)

    Xenon HID Conversion Kit

  •
    Best Choice, D3C

    Philips D3S Standard Authentic Xenon HID

    POWERFUL LIGHT FROM XENON HID BULBS OFFER MAXIMUM SAFETY: Xenon HID (High Intensity Discharge) headlight bulbs offer twice as much light* for safer driving in all conditions while consuming 50% less power. The intense white light produced by the Xenon HID lamps is comparable to daylight. Studies have demonstrated that...

See more D3S Xenon HID Conversion Kit

2012 Audi S4 Back Up Reverse Light Bulb (921)

    Halogen Lights

  •
    Best Choice

    Philips 12789LPB2 Bright White Vision

    Replace your standard car lights with our robust Philips Vision LEDs that deliver dynamic lighting for your vehicle, both inside and out. The innovative design and unmatched performance of Philips Vision LEDs are available for brake and taillights, backup lights, dome lights, and license plate lights. These bulbs are covered

See more 921 Halogen Lights

2012 Audi S4 Side Marker Light Bulb Front (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

2012 Audi S4 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

2012 Audi S4 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

2012 Audi S4 Map 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

2012 Audi S4 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

2012 Audi S4 Headlights

2012 Audi S4 Tail Lights

Audi S4 Bulb Size By Years

Misconception: you might think all headlight or interior bulbs for a 2012 Audi S4 are interchangeable or listed in one obvious place. It seems true because many parts sites show similar names and part numbers, so swapping feels straightforward. Think of it as a mental model that glosses over differences in socket type, brightness, and CAN-bus compatibility. What is true is that each lamp position — low beam, high beam, fog, signal, map light — can require different bases or error-cancelling bulbs. The rule of thumb is to match both the bulb code and the electrical characteristics rather than just shape. That reduces flicker and warning lights. Implications: use this chart as a practical cross-reference and a starting checklist. Quick tests: compare the bulb code on your old lamp, try the vehicle manual, and verify fit before powering up. Affiliate note: links on this page may earn a small commission at no extra cost to you; I only include products I’d use on my own S4. Quick recap: match codes, check fit, and you’ll feel confident.

2012 Audi S4 specs
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