Mercedes-Benz C-Class Headlights: Specs, Fitment & Common Faults
Bulb type, unit part numbers, and the faults that actually cause that flickering or dim light you've noticed.
Illustration for editorial purposes
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OEM Part Number: confirm via VIN — aftermarket LH Hella 1EX 013 063-511 / RH Hella 1EX 014 827-561
| Passenger side (LH / nearside) headlight — aftermarket | Magneti Marelli 710301284203 (halogen H7, PWY24W, no DRL); Diederichs 1673081 (halogen H7, PWY24W, no DRL); Hella 1EX 013 063-511 (LED, DRL); Hella 1EX 014 827-551 (LED, DRL); Hella 1EX 013 063-611 (Bi-LED multibeam, DRL); Diederichs 1673185 (LED, DRL) |
|---|---|
| Driver's side (RH / offside) headlight — aftermarket | Magneti Marelli 710301284204 (halogen H7, PWY24W, no DRL); Van Wezel 2924962M (halogen H7, electric levelling motor included); Hella 1EX 014 827-561 (LED, DRL); Hella 1LX 014 827-541 (LED, DRL); Hella 1EX 014 827-661 (LED multibeam, DRL); Hella 1EX 013 063-521 (LED, DRL) |
| Bulb types | dipped H7, indicator PWY24W; LED units take no bulbs |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine units against your VIN |
| Fitment notes | Halogen H7 and LED units are listed and no xenon appears; the Magneti Marelli and Diederichs LED units without DRL are sold without the LED control unit for the daytime running light, and the Hella multibeam units are the adaptive versions. |
A Genuinely Important UK Rule Worth Knowing Before You Buy — Mercedes-Benz C-Class Headlights
If your C-Class has factory-fitted halogen headlamp housings, converting them to fit LED bulbs is treated as a definite MOT failure under the current inspection manual — this isn't a grey area or a minor advisory, since a housing designed for halogen doesn't distribute an LED bulb's light output correctly, which can genuinely dazzle oncoming drivers. If you want a genuine LED upgrade, the correct route is a complete headlight unit designed for LED from the factory, not a bulb swap into an existing halogen housing.
Mercedes-Benz C-Class Headlights: Watch: Replacing It
W205 bulb change
Mercedes-Benz C-Class Headlights: What It Does
On the Mercedes-Benz C-Class, the main and dipped beams, whether conventional bulbs or LED/matrix modules on higher trims, sit inside the headlight unit at an angle calculated to illuminate the road without dazzling other drivers. Many modern units also combine the daytime running light and indicator into that same housing, adding a layer of complexity to both part numbers and repairs.
Mercedes-Benz C-Class Headlights: Generations, Derivatives & Headlight Type
| W204 (2007–2014), standard trims | Halogen, chrome housing |
|---|---|
| W205 (2015–2018), standard trims | Static LED — confirmed as a genuinely different, non-interchangeable system from the optional adaptive version |
| W205, optional | "Intelligent Light System" (ILS) adaptive LED — check for SA code 640 or "MULTIBEAM LED" text on the unit itself to confirm which your car has before ordering |
| W205 facelift (2019–2021) | Genuinely upgraded and rebranded "MULTIBEAM LED" system using more individual LED chips (84 per headlight) for more precise light control — functionally similar to pre-facelift ILS but with different housings and electronics, not a direct swap |
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Mercedes-Benz C-Class Headlights: Common Faults, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Headlights Guide for the four bulb technologies and how they differ, UK law on aim and modifications, common faults to check for, how difficult this job is to DIY, and confirming fitment against your VIN.
More Mercedes-Benz Headlights
The same part, covered across other Mercedes-Benz models.