2018 Audi A4 Bulb Size
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Bulbs Chart
2018 Audi A4 Headlight Bulb High Beam and Low Beam(with HID headlights) (D5S)
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Best Choice
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 and ballast integrated into the base of this innovative design. DOT compliant with precise light distribution.
Philips D5S Standard Authentic Xenon
Xenon HID Conversion Kit
See more D5S Xenon HID Conversion Kit
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Trustworthy Manufacturer
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 reliable products, you can drive with confidence and peace of mind. This aftermarket LED headlight conversion kit is designed to perfectly replace D5S OEM Xenon bulbs...VehiCode D5S LED Headlight Bulb Conversion Kit
LED Lights
2018 Audi A4 Headlights
![ACANII - For [HID/Xenon Model] 2017 2018 2019 Audi A4 LED DRL Projector Headlights Headlamps Pair Replacement Left+Right](https://m.media-amazon.com/images/I/51XiZZqvszL._AC_QL90_UL90_.jpg?ezimgfmt=0)
2018 Audi A4 Tail Lights
Audi A4 Bulb Size By Years
Goal: If you’re replacing bulbs on a 2018 Audi A4, this size chart removes guesswork by listing the correct bulb types for each lamp location. Start with the problem: wrong bulbs cause poor lighting, fitment issues, or blown fuses. The chart is a recommended quick reference that reflects common OEM sizes and practical replacements, with trade-offs noted where sizes vary.
Prerequisites and step by step: verify your vehicle’s trim and production month, remove the old bulb to confirm the base type, and match it to the chart before buying. Validation: check fit and function after installation and confirm no dashboard warnings.
Troubleshooting and wrap up: if a bulb doesn’t seat or flickers, recheck the base and connector. Note: some links on this page are affiliate links; I may earn a commission at no extra cost to you.
2018 Audi A4 specs
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