Renault Megane 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 046746 / RH Valeo 046747

Accuracy note: Covers the Renault Megane (Mk4 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 046746 (halogen H7/H9, no DRL, no levelling motor); Valeo 046750 (halogen H7/H9, with DRL, no levelling motor); Abakus 551-11A5LMLDEM2 (halogen H7 with PY21W, W5W, DRL, electric levelling motor); TYC 20-17074-16-2 (halogen H7, with DRL, electric levelling); Valeo 450906 (full LED, with LED DRL, bulbs not included); Diederichs 4467985 (LED, with LED DRL)
Driver's side (RH / offside) headlight — aftermarket	Valeo 046747 (halogen H7/H9, no DRL, no levelling motor); Valeo 046751 (halogen H7/H9, with DRL, no levelling motor); Abakus 551-11A5RMLDEM2 (halogen H7 with PY21W, W5W, DRL, electric levelling motor); TYC 20-17073-16-2 (halogen H7, with DRL, electric levelling); Valeo 450907 (full LED, with LED DRL, bulbs not included); Diederichs 4467984 (LED, with LED DRL)
Bulb types	dipped H7, main H9 (some units H7/H7), indicator PY21W, sidelight W5W; full LED on the LED trims
Genuine (OE) numbers quoted	None quoted in catalogue listings — order genuine units against your VIN
Fitment notes	Halogen units (Valeo 0467xx/0467xx range) suit base trims and Valeo 450906/450907 suit full-LED cars; Van Wezel 4407987 (LH) / 4407988 (RH) are LED units for the RS version and are not for the facelift.

A Genuinely Important UK Rule Worth Knowing Before You Buy — Renault Megane Headlights

If your Megane 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.

Renault Megane Headlights: Watch: Replacing It

🎬 Watch: How to change a h7 bulb with a h7 led bulb on a Renault Megane 4 (2019)

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H7 to H7 LED bulb swap

Renault Megane Headlights reference plate

Renault Megane Headlights: What It Does

On the Renault Megane, 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.

Renault Megane Headlights: Generations, Derivatives & Headlight Type

Standard trims	Halogen as standard on earlier generations
Higher trims/GT Line	Genuine "Pure Vision" full LED headlights, Renault's branded LED lighting technology shared across the range
RS models	"RS Vision" coordinated lighting treatment, a genuinely distinct system from standard Pure Vision, not just a badge difference

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Renault Megane 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 Renault Headlights

The same part, covered across other Renault models.