Citroen C1 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 045436 / RH Valeo 045437

Accuracy note: Covers the Citroen C1 (2014-) 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	Diederichs 4082081 (halogen H7, DRL, no motor); Diederichs 4082981 (halogen H7, DRL, no motor); Valeo 045436 (halogen H7 low beam, original part, no motor); Van Wezel 0919961 (halogen H7/H7, no motor); Prasco CI2064904 (halogen H7/H7, no motor); Valeo 043000 (halogen H4, motor)
Driver's side (RH / offside) headlight — aftermarket	Diederichs 4082080 (halogen H7, DRL, no motor); Diederichs 4082980 (halogen H7, DRL, no motor); Valeo 045437 (halogen H7 low beam, original part, no motor); Van Wezel 0919962 (halogen H7/H7, no motor); Prasco CI2064903 (halogen H7/H7, no motor); Valeo 043001 (halogen H4, motor)
Bulb types	dipped H7 (PX26d), or H4 on the H4 version; indicator PY21W, sidelight W5W
Genuine (OE) numbers quoted	None quoted in catalogue listings — order genuine units against your VIN
Fitment notes	Every unit is halogen; H7 units with LED DRL on later cars, H4 units on others

A Genuinely Important UK Rule Worth Knowing Before You Buy — Citroen C1 Headlights

If your C1 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 C1 Headlights: Watch: Replacing It

🎬 Watch: How to Change Headlight Bulbs on a Citroen C1 (2005-2014) (older gen)

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Citroen C1 Headlights: What It Does

On the Citroen C1, 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 C1 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 C1 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.