Fiat 500 (Petrol) 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 TYC 20-15506-05-2 / RH TYC 20-15505-05-2

Accuracy note: Covers the Fiat 500 (Petrol) (2007- petrol 500) 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	Magneti Marelli 712000815331 (halogen H7, bulbs included, electric levelling, original quality); Magneti Marelli 712455501129 (halogen H7 with WY21W indicator, electric levelling, original quality); Van Wezel 1604961 (halogen H7, electric levelling motor, not for facelift); TYC 20-15506-05-2 (halogen H7, electric levelling motor); Alkar 2701348 (halogen H1 with W21/5W and DRL, mechanical levelling); TYC 20-15502-06-2 (LED design with H7, W21W and DRL)
Driver's side (RH / offside) headlight — aftermarket	Van Wezel 1604962 (halogen H7, electric levelling, not for facelift); TYC 20-15505-05-2 (halogen H7, electric levelling motor); Alkar 2742348 (halogen H7 with WY21W, electric levelling motor); Alkar 2702348 (halogen H1 with W21/5W and DRL, mechanical levelling); TYC 20-15501-06-2 (LED design with H7, W21W and DRL); Abakus 661-1155R-LD-EM (halogen H7 with WY21W, electric levelling, sold without bulb)
Bulb types	dipped H7, main beam H1 on the combined units, indicator WY21W or PY24W, side and DRL W21/5W or W21W; socket PX26d
Genuine (OE) numbers quoted	None quoted in catalogue listings — order genuine units against your VIN
Fitment notes	Pre-facelift and facelift cars take different lamps, shown by the not-for-facelift marking on the Van Wezel units; later cars have LED DRL lamps; no xenon is listed.

A Genuinely Important UK Rule Worth Knowing Before You Buy — Fiat 500 (Petrol) Headlights

If your 500 (Petrol) 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.

Fiat 500 (Petrol) Headlights: Watch: Replacing It

🎬 Watch: Fiat 500 Headlight Bulb Replacement Left and Right Headlight 2008 - 2015

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Petrol 500 (2007 model)

Fiat 500 (Petrol) Headlights reference plate

Fiat 500 (Petrol) Headlights: What It Does

On the Fiat 500 (Petrol), 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.

Fiat 500 (Petrol) Headlights: Generations & Headlight Type

All generations	Halogen as standard, with LED daytime running lights and higher-spec bulb options on some trims and later model years

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Fiat 500 (Petrol) 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 Fiat Headlights

The same part, covered across other Fiat models.