Mercedes-Benz C-Class W203 Bulb Sizes (2000–2007)
Quick answer: the Mercedes-Benz C-Class W203 uses H7 for both the low and the high beam on halogen headlights.
Looking for the right headlight bulb for your Mercedes-Benz C-Class W203 (2000–2007)? Below you will find the bulb sizes for the low beam, high beam, fog lights and parking lights, for both halogen and xenon headlights.
This guide covers: C180, C200, C220 CDI, C230, C240, C270 CDI, C320, C350, C55 AMG · Sedan, Estate (S203), Sport Coupe (CL203).
Mercedes-Benz C-Class W203 bulb sizes
Halogen headlights
Low beam: H7
High beam: H7
Fog lights: H11 – check (varies by bumper)
Parking / position lights: W5W (T10)
Xenon headlights
Low beam: D2S
High beam: H7
Fog lights: H11 – check (varies by bumper)
Parking / position lights: W5W (T10)
Good to know
Halogen W203 headlights use H7 for both beams.
Xenon W203 cars use D2S.
LightsUp LED bulbs for the Mercedes-Benz C-Class W203
Magic App Control LED bulbs – sizes for this car: H7, H11. colour temperature, brightness and strobe controlled from your phone, built-in CAN bus.
CORE150 LED bulbs – sizes for this car: H7, H11. very bright 6500K white, no app.
Compact 1:1 H7 LED bulbs (6000LM) – sizes for this car: H7. very compact, no external driver – fits tight headlight housings.
Xenon to LED bulbs – sizes for this car: D2S. plug-and-play LED replacement for xenon bulbs.
Xenon LED bulbs with App Control – sizes for this car: D2S. xenon LED replacement with app control.
T10 / W5W LED bulbs – sizes for this car: W5W / T10. for parking and position lights.
Why upgrade to LED?
Much brighter, clean white light (around 6000K) instead of yellow halogen.
Instant full brightness and a much longer life than halogen bulbs.
Plug-and-play: the same base as your original H7 bulb, no cutting or wiring changes.
Built-in CAN bus on our App Control bulbs – no dashboard warnings on most cars.
Xenon headlights? Swap to LED
If your Mercedes-Benz C-Class W203 has xenon headlights, our Xenon to LED bulbs replace the D2S bulb directly – no ballast changes needed.
FAQ
What is the W203 low beam bulb?
H7 on halogen cars, D2S on xenon cars.
Do LED bulbs fit the W203?
Yes, LED H7 bulbs fit behind the W203 caps.
Check before you order
Headlights can differ by market (EU/US), trim, xenon or halogen, or because a previous owner fitted different lights. Please check the code printed on the base of your current bulb before ordering. Not sure? Send us a photo of your bulb to info@lightsup.pro and we will confirm the right size for you.
Other car? Use our Bulb Finder – pick your make, model and year and see the right bulbs in seconds.
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