Audi S4 2000 Bulb Size
Bulb size chart
This page helps you find the right bulb sizes for the 2000 Audi S4 by lighting position, so you can match the correct bulb to each exterior and interior lamp. Whether you are replacing a burned-out light or planning a full refresh, checking the bulb chart by location makes fitment much easier.
The 2000 Audi S4 uses a mix of halogen, HID, and small interior bulbs depending on the lamp location. Because trim, market, and lighting package can vary, this year page is designed to help you verify the bulb size for each specific position before you buy replacements.
For best results, compare the bulb listed for your exact lamp position with the bulb already installed in your car, especially if your S4 has different trim, an optional lighting package, or a previous owner’s aftermarket conversion. Some bulbs are shared across several locations, but that does not always mean every housing is identical. If your car has been converted from halogen to LED, or if the lighting has been modified, the original bulb size may still be the correct reference, but the replacement style can differ. Always check the installed bulb and connector style before ordering, and confirm whether you need a standard incandescent bulb, a direct-fit LED replacement, or an adapter for a custom setup.
FAQ
What bulb does the 2000 Audi S4 use for the low beam headlight?
The low beam headlight bulb listed for the 2000 Audi S4 is D2S. This applies to the low beam position, so make sure you are matching the correct headlamp function before ordering.
What is the rear turn signal bulb size on this model year?
The rear turn signal bulb for the 2000 Audi S4 is 7506. If you are replacing a rear signal bulb, confirm that you are working with the turn signal socket and not the brake or tail lamp socket.
Which bulb fits the brake light and tail light positions?
Both the brake light and tail light bulb positions use 7528 on the 2000 Audi S4. That makes it easier to keep a spare on hand, since the same bulb size is used in both rear lighting functions.
What bulb size is used for the front outer turn signal?
The front outer turn signal bulb is 2827 on the 2000 Audi S4. This is separate from the front inner signal position, so check the housing before purchasing a replacement.
What bulb fits the front inner turn signal and front side marker?
The front inner turn signal bulb is 3457A, and the front side marker bulb is also 3457A. These are listed separately by position, but they use the same bulb size.
What bulb is used for the license plate lights?
The license plate light bulb for the 2000 Audi S4 is 6418. If one plate light is out, it is often a good idea to replace both at the same time so the color and brightness match.
What bulb size is used in the dome light and engine compartment light?
The dome light bulb and the engine compartment light bulb are listed as 6411 or 6428. If you are replacing either one, verify the existing bulb marking first because both sizes are shown for these locations.
What bulb fits the glove box, vanity mirror, and trunk lights?
The glove box light bulb, vanity mirror light bulb, and trunk or cargo area light are listed as 6418. These small interior bulbs are commonly replaced together when one fails.
What bulb does the map light use?
The map light bulb listed for the 2000 Audi S4 is 64111. If your car has a different overhead console or an aftermarket interior lamp, check the installed bulb before buying.
What bulb is used for the center high mount stop light?
The center high mount stop light bulb for the 2000 Audi S4 is 2723. This is the third brake light, so it is important to match the correct bulb size for safety and inspection purposes.
Are there different courtesy light bulb options on this page?
Yes. The page lists courtesy light bulb option 1 as 2825 or 98, and courtesy light bulb option 2 as 6418. Because courtesy light setups can vary, check the bulb in your specific housing before ordering.
Why might my 2000 Audi S4 use a different bulb than another S4 from the same year?
Trim, market, body style, and lighting package can change the bulb used in a given position. That is why this year page lists bulbs by location and includes notes to verify the exact fitment on your vehicle.
Can I replace these bulbs with LED bulbs?
In many positions, LED replacements are available, but the correct fit depends on the bulb size, housing depth, and whether the car uses a monitoring system. For the 2000 Audi S4, match the base bulb size first, then choose an LED that is designed for that application.
What should I check before ordering replacement bulbs?
Before ordering, confirm the lighting position, read the bulb number from the old bulb if possible, and check whether your car has stock or modified lighting. This is especially important on the 2000 Audi S4 because some bulb positions can vary by package or previous repairs.