Toyota Aygo 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 043008 / RH Van Wezel 5403962

Accuracy note: Covers the Toyota Aygo (2014-2021) 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 043008 (halogen H4, electric motor, original part); Van Wezel 5403963 (halogen H4, electric motor); Van Wezel 5403961 (halogen H4, no motor); TYC 20-0762-05-2 (halogen H4, no motor); Alkar 2751260 (LED/HIR2, P21W, electric); Van Wezel 5412961 (LED/HIR2, facelift, no motor)
Driver's side (RH / offside) headlight — aftermarket	Van Wezel 5403962 (halogen H4, no motor); Diederichs 6600980 (halogen H4, no motor); Alkar 2756265 (halogen H4, W5W, PY21W, electric); Alkar 2752260 (LED/HIR2, P21W, electric); Diederichs 6601080 (LED/HIR2, no motor); Johns 81 03 10 (halogen HIR2, LED DRL, no motor)
Bulb types	dipped/main H4 (P43t) on halogen cars; HIR2 (PX22d) on the LED-type units; sidelight W5W, indicator PY21W or P21W
Genuine (OE) numbers quoted	None quoted in catalogue listings — order genuine units against your VIN
Fitment notes	Base cars take halogen H4 and the facelift versions take HIR2/LED units, with levelling electric or none; only the Johns pair is stated with a DRL.

A Genuinely Important UK Rule Worth Knowing Before You Buy — Toyota Aygo Headlights

If your Aygo 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.

Toyota Aygo Headlights: Watch: Replacing It

🎬 Watch: How to change the Main Dipped bulb on Toyota Aygo mk2

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Mk2 dipped bulb

Toyota Aygo Headlights: What It Does

Inside the Toyota Aygo's headlight unit sit the main and dipped beam bulbs, or LED/matrix modules on higher trims, precisely angled to light the road ahead without dazzling oncoming drivers. Many current units also fold the daytime running light and front indicator into the same housing, which complicates both the part number and any repair.

Toyota Aygo Headlights: Generations & Headlight Type

Standard trims	Halogen as standard, with LED daytime running lights integrated on many trims
Higher trims	LED headlights become available on higher trims and more recent generations, genuinely a different assembly from the halogen units on lower trims

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Toyota Aygo 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 Toyota Headlights

The same part, covered across other Toyota models.