Citroen C3 Headlights: Specs, Fitment & Common Faults

Bulb type, unit part numbers, and the faults that actually cause that flickering or dim light you've noticed.

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OEM Part Number: confirm via VIN — aftermarket LH Valeo 450400 / RH Valeo 450401

Accuracy note: Covers the Citroen C3 (2016-) as listed in the UK aftermarket catalogues. Headlights are sold by side (passenger / nearside = LH, driver's / offside = RH on a UK car) and by lamp type — halogen, xenon (D1S / D3S) and LED or full-LED units are not interchangeable, and DRL, cornering and levelling options change the part number again. The references below are UK aftermarket catalogue listings for this generation, labelled by brand; genuine numbers are shown only where a listing quotes one. Check the lamp type and traffic side (UK right-hand-traffic units, not LHD) against your VIN, and expect xenon / LED and adaptive units to need levelling adjustment or coding after fitting.

Passenger side (LH / nearside) headlight — aftermarket	Valeo 450400 (original-trademark unit, with levelling motor); TYC 20-17438-05-2 (halogen H7/H7, for cars with electric levelling, unit without motor); TYC 20-17438-15-2 (halogen H7/H7, electric levelling motor included); Alkar 2795852 (halogen H7/H7, electric levelling); Abakus 552-1150L-LDEM2 (halogen H7/H7, no motor, supplied without bulb); Valeo 451024 (LED low and high beam, no bulb holder)
Driver's side (RH / offside) headlight — aftermarket	Valeo 450401 (original-trademark unit, electric levelling motor included); TYC 20-17437-05-2 (halogen H7/H7, for cars with electric levelling, unit without motor); Alkar 2796852 (halogen H7/H7, electric levelling); Abakus 552-1150R-LDEM2 (halogen H7/H7, no motor, supplied without bulb); Valeo 451025 (LED low and high beam, no bulb holder); Van Wezel 0993964V (LED, motor included, facelift, OES quality, no control unit)
Bulb types	dipped and main beam H7/H7 (PX26d socket) on the halogen units, H1 on some Alkar units, indicator PY21W, sidelight W5W; LED units use sealed LED modules
Genuine (OE) numbers quoted	None quoted in catalogue listings — order genuine units against your VIN
Fitment notes	Most halogen units are H7/H7 and the TYC and Abakus versions are sold without a levelling motor, so reuse the motor from the old lamp on cars with electric levelling; the LED headlights (Valeo 451024/451025, Van Wezel 0993963V/0993964V, Abakus 552-1155 pair) are for the LED-equipped and facelift cars; DRL is not stated for any halogen unit.

A Genuinely Important UK Rule Worth Knowing Before You Buy — Citroen C3 Headlights

If your C3 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.

Before you buy: matrix LED, adaptive, and cornering headlight systems often require electronic coding to the car after a unit swap, even for a genuine like-for-like replacement — a headlight that isn't recognised by the car's electronics can trigger warning lights or fail to auto-level correctly. Check whether your specific trim has one of these systems before assuming a straightforward bulb-in, bulb-out job.

Citroen C3 Headlights: Watch: Replacing It

🎬 Watch: How to replace Citroen C3 headlight bulbs

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Generation not confirmed from title (could be older C3); no explicit 2016+ C3 video found

Citroen C3 Headlights: What It Does

On the Citroen C3, main and dipped beam bulbs — or LED/matrix modules on higher-spec cars — live inside the headlight unit, angled carefully to illuminate the road without blinding oncoming traffic. The daytime running light and front indicator often share that same housing too, adding complexity to both fitment and repair.

Citroen C3 Headlights: Generations & Headlight Type

Standard trims	Halogen as standard, with LED daytime running lights and full LED options available on higher trims and more recent model years

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Citroen C3 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 Citroen Headlights

The same part, covered across other Citroen models.