Lexus NX 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 20-17416-06-9 / RH Hella 1ZT 009 631-321

Accuracy note: Covers the Lexus NX (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	Prasco LS7024904 (LED, electric levelling motor); TYC 20-17416-06-9 (LED, electric levelling); Alkar 2743523 (LED, PY24W/H4 listed, motor); Abakus 550-1130L-LD-EM (halogen H1/H7, electric, no bulb); TYC 20-11778-05-2 (halogen H15/H7, electric motor)
Driver's side (RH / offside) headlight — aftermarket	Hella 1ZT 009 631-321 (bi-xenon D1S, PY21W, H11, with DRL function, dynamic bending light); Prasco LS7024903 (LED, electric levelling motor); TYC 20-17415-06-9 (LED, electric levelling); Alkar 2744523 (LED, motor); Alkar 2752283 (halogen H1/H7, W5W, electric motor); Johns 25 42 10 (halogen, LED DRL, no levelling motor)
Bulb types	dipped H7, main H1 (halogen units); H11 and D1S (bi-xenon); indicator PY21W or PY24W; sidelight W5W; H4 on basic units
Genuine (OE) numbers quoted	None quoted in catalogue listings — order genuine units against your VIN
Fitment notes	LED, bi-xenon and halogen units are all listed, and the Johns halogen unit is the only one described with an LED DRL strip. Some listed units carry other-vehicle year tags, so confirm fitment.

A Genuinely Important UK Rule Worth Knowing Before You Buy — Lexus NX Headlights

If your NX 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.

Lexus NX Headlights: Watch: Replacing It

🎬 Watch: Lexus NX 200t 250 300 300h 2015-2021 car headlight replacement LED to triple LED

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Headlight unit swap, not a plain bulb change; no bulb-only NX video found

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.

Lexus NX Headlights: What It Does

The Lexus NX's headlight unit job is positioning the main and dipped beam bulbs (or LED/matrix modules on higher trims) to light the road without dazzling oncoming drivers. That housing frequently also contains the daytime running light and front indicator, which is exactly why part numbers and repairs here can get complicated.

Lexus NX Headlights: Generations, Derivatives & Headlight Type

Standard trims	Halogen with LED daytime running lights, or Bi-LED (standard full LED with automatic high beam) depending on model year
F Sport, factory option	Genuine "Triple-Beam LED" headlights — a distinctive three-projector L-shaped design using Matrix technology, historically priced as a costly standalone option (around $1,615 when new) rather than a bundled freebie; confirmed as a different, more advanced system than standard Bi-LED, not just a styling change
Market note	Full Matrix functionality on Triple-Beam headlights is not available on North American-market cars due to regulations — only Europe and Japan get the complete adaptive functionality despite the hardware looking identical

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Lexus NX 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 Lexus Headlights

The same part, covered across other Lexus models.