2004 Audi A4 Bulb Size
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Bulbs Chart
2004 Audi A4 Headlight Bulb Low Beam(Avant, with HID headlights) (D1S)
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Best Choice
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
Philips D1S Standard Authentic Xenon
Xenon HID Conversion Kit
2004 Audi A4 Headlight Bulb Low Beam(Cabriolet, with HID headlights) (D2S)
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Best Choice for 2004 Audi A4
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
Philips D2S Standard Authentic Xenon
Xenon HID Conversion Kit
2004 Audi A4 Headlight Bulb Low Beam(Avant, with halogen headlights) (H7)
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Best Choice for 2004 Audi A4
- 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.
SYLVANIA H7 SilverStar Ultra
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Premium Pick
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
Philips H7 X-tremeVision Up
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Best Value
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.
PIAA Xtreme White Plus High Performance
Halogen Lights
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Best Overall
- Genuine Morimoto Elite HID System - Heavy Duty Double Relay Harness - Pair of High-Quality Morimoto Bulbs
Morimoto Elite HID Kit System
Xenon HID Conversion Kit
2004 Audi A4 Headlight Bulb High Beam(Avant) (H7)
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Best Choice for 2004 Audi A4
- 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.
SYLVANIA H7 SilverStar Ultra
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Premium Pick
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
Philips H7 X-tremeVision Up
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Best Value
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.
PIAA Xtreme White Plus High Performance
Halogen Lights
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Best Overall
- Genuine Morimoto Elite HID System - Heavy Duty Double Relay Harness - Pair of High-Quality Morimoto Bulbs
Morimoto Elite HID Kit System
Xenon HID Conversion Kit
2004 Audi A4 Headlight Bulb High Beam(Cabriolet, with halogen headlights) (H9)
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#1 Bestseller
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
Sealight L2 Series
LED Lights
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Premium Pick
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
PIAA 19665 H9 Xtreme White Plus
Halogen Lights
2004 Audi A4 Stepwell Light Bulb (2825)
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Premium Pick
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.
Sylvania White Mini Bulb
Halogen Lights
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For Car Dome, Map Door, Courtesy, License Plate Lights
– 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
Marsauto LED Light Bulb 6000K Replacement Bulbs
LED Lights
2004 Audi A4 Parking Light Bulb(Avant, Compare to original - Option 1) (2825)
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Premium Pick
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.
Sylvania White Mini Bulb
Halogen Lights
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For Car Dome, Map Door, Courtesy, License Plate Lights
– 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
Marsauto LED Light Bulb 6000K Replacement Bulbs
LED Lights
2004 Audi A4 Daytime Running Light Bulb(Base) (2825)
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Premium Pick
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.
Sylvania White Mini Bulb
Halogen Lights
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For Car Dome, Map Door, Courtesy, License Plate Lights
– 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
Marsauto LED Light Bulb 6000K Replacement Bulbs
LED Lights
2004 Audi A4 Glove Box Light Bulb (2825)
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Premium Pick
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.
Sylvania White Mini Bulb
Halogen Lights
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For Car Dome, Map Door, Courtesy, License Plate Lights
– 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
Marsauto LED Light Bulb 6000K Replacement Bulbs
LED Lights
2004 Audi A4 Interior Door Light Bulb (2825)
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Premium Pick
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.
Sylvania White Mini Bulb
Halogen Lights
-
For Car Dome, Map Door, Courtesy, License Plate Lights
– 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
Marsauto LED Light Bulb 6000K Replacement Bulbs
LED Lights
2004 Audi A4 Courtesy Light Bulb(Avant) (2825)
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Premium Pick
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.
Sylvania White Mini Bulb
Halogen Lights
-
For Car Dome, Map Door, Courtesy, License Plate Lights
– 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
Marsauto LED Light Bulb 6000K Replacement Bulbs
LED Lights
2004 Audi A4 Trunk or Cargo Area Light(Cabriolet) (2825)
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Premium Pick
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.
Sylvania White Mini Bulb
Halogen Lights
-
For Car Dome, Map Door, Courtesy, License Plate Lights
– 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
Marsauto LED Light Bulb 6000K Replacement Bulbs
LED Lights
2004 Audi A4 Headlights
2004 Audi A4 Tail Lights
Audi A4 Bulb Size By Years
Misconception: many drivers think replacing a bulb for a 2004 Audi A4 is just picking any similar-looking lamp. It seems true because headlights and taillights often look interchangeable at a glance.
What is true: think of it as a match problem — each socket and housing expects a specific bulb type and size. A useful mental model is to treat the chart as a parts map and a rule of thumb: match the listed size for low beam, high beam, indicators, and interior lights to avoid fit or performance issues.
Implications and quick tests: use the chart to verify fit before buying, check the old bulb’s code, and test the new lamp for brightness and fit. Quick recap: this list saves time and avoids returns. Note: some links on this page are affiliate links, which may earn a small commission at no extra cost to you.
2004 Audi A4 specs
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