
Marsauto M1C H11 LED Fog Light Bulbs, 30000LM 6000K Cool ...
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Used for: Fog Light Bulb Front
Used for: Fog Light Bulb Front
Used for: Headlight Bulb High Beam(Avant), Headlight Bulb Low Beam(Avant, with halogen headlights)
Used for: Headlight Bulb High Beam(Cabriolet, with halogen headlights)
Used for: Headlight Bulb Low Beam(Avant, with HID headlights)
Used for: Headlight Bulb Low Beam(Cabriolet, with HID headlights)
Used for: Back Up Reverse Light Bulb, Daytime Running Light Bulb
Used for: Brake Light Bulb(Avant), Side Marker Light Bulb Rear(Compare to original - Option 2), Tail Light Bulb(Compare to original - Option 2)
Used for: Brake Light Bulb(Base)
Used for: Brake Light Bulb(Cabriolet), Tail Light Bulb(Compare to original - Option 1)
Used for: License Plate Light Bulb, Courtesy Light Bulb(Base, Compare to original - Option 2), Trunk or Cargo Area Light(Avant), Vanity Mirror Light Bulb
Used for: Parking Light Bulb, Side Marker Light Bulb Front, Turn Signal Light Bulb Front Inner
Used for: Side Marker Light Bulb Rear(Compare to original - Option 1)
Used for: Stepwell Light Bulb, Courtesy Light Bulb(Avant), Glove Box Light Bulb, Interior Door Light Bulb, Trunk or Cargo Area Light
Used for: Stepwell Light Bulb, Courtesy Light Bulb(Avant), Glove Box Light Bulb, Interior Door Light Bulb, Trunk or Cargo Area Light
Used for: Turn Signal Light Bulb Front Outer
Used for: Turn Signal Light Bulb Rear
Used for: Dome Light Bulb, Engine Compartment Light Bulb
Used for: Dome Light Bulb, Engine Compartment Light Bulb
Used for: Map Light Bulb
This 2005 Audi S4 bulb size guide is organized by lighting position so you can quickly verify the correct replacement before you buy. Whether you are changing a headlight, tail light, interior lamp, or cargo light, the right bulb depends on where it is installed and, in some cases, on the body style or lighting package.
The 2005 Audi S4 was offered with different lighting setups across markets and trims, so the same model year can use more than one bulb type in certain locations. Use this page to match each bulb to its exact position on the car and confirm fitment for sedan, Avant, or Cabriolet applications when applicable.
For best results, compare the bulb listed here with the one already installed in your 2005 Audi S4 before ordering, especially if the car has been modified or converted to LED lighting. Trim level, factory package, halogen versus HID headlights, and body style can change fitment, and aftermarket LED replacements may require a different base, polarity check, or additional hardware. If your S4 has been retrofitted, do not assume the original bulb chart still applies exactly; verify the part number on the bulb itself and inspect the housing before purchase.
The listed low beam bulb for the Avant with HID headlights is D1S. This applies to the HID-equipped Avant configuration, not the halogen version.
The 2005 Audi S4 Avant with halogen headlights uses an H7 low beam bulb.
The high beam bulb listed for the Avant is H7.
For the Cabriolet with halogen headlights, the high beam bulb is H9.
The rear turn signal bulb listed for this model year is 7507.
The front outer turn signal bulb is 2827.
Both the parking light and the front side marker use 3457A bulbs.
The daytime running light bulb is 7506.
The back up reverse light uses 7506, and the base brake light uses 7506R.
For the Avant, the brake light bulb is 7528. The tail light bulb is also listed as 7528 in the compare-to-original option shown on this page.
Several interior and utility locations use 2825 or 98 bulbs, including the glove box, trunk or cargo area, interior door light, stepwell light, and some courtesy light positions on the Avant.
Both the license plate light and vanity mirror light use 6418 bulbs.
The dome light and engine compartment light are listed as 6411 or 6428 bulbs.
No. The front fog light listing shows H11 LED or H16 LED, so fitment can vary by setup and conversion. Check the housing and existing bulb before ordering.
Because the 2005 Audi S4 can vary by body style, market, and lighting package, the installed bulb is the safest reference. This is especially important for HID, halogen, and aftermarket LED conversions.