Land Rover Discovery Headlights: Specs, Fitment & Common Faults
Bulb type, unit part numbers, and the faults that actually cause that flickering or dim light you've noticed.
Illustration for editorial purposes
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OEM Part Number: confirm via VIN — aftermarket LH Valeo 450723 / RH Hella 1LJ 354 813-021
| Passenger side (LH / nearside) headlight — aftermarket | Hella 1LJ 354 813-131 (LED, DRL, levelling motor, HB3 and PY21W); Hella 1EJ 354 813-151 (LED, DRL, levelling motor, HB3 and PY21W); Valeo 450723 (LED, DRL, levelling motor); Abakus 884-1103LMLD-EM (LED, electric levelling motor, HB3 and PSY24W); Hella 1ZS 354 835-031 (bi-xenon D3S with PSY24W, DRL, levelling motor) |
|---|---|
| Driver's side (RH / offside) headlight — aftermarket | Hella 1LJ 354 813-021 (LED, DRL, levelling motor, HB3 and PY21W); Hella 1EJ 354 813-041 (LED, DRL, levelling motor, HB3 and PY21W); Hella 1ZS 354 835-041 (bi-xenon D3S with PSY24W, DRL, levelling motor); Hella 1EL 354 806-101 (halogen HB3 with PSY24W, DRL, levelling motor); Van Wezel 0259962N (halogen H7/H15, DRL, electric levelling motor) |
| Bulb types | dipped HB3 with indicator PY21W or PSY24W on LED-design units, xenon D3S, halogen H7 and H15, LED units sold without bulbs |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine units against your VIN |
| Fitment notes | Check LED or xenon specification before ordering. |
A Genuinely Important UK Rule Worth Knowing Before You Buy — Land Rover Discovery Headlights
If your Discovery 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.
Land Rover Discovery Headlights: Watch: Replacing It
Discovery 4; no Discovery 5 video found in 3 searches.
Land Rover Discovery Headlights: What It Does
The Land Rover Discovery's headlight unit houses the main and dipped beam bulbs (or LED/matrix modules on higher trims), positioned and angled to illuminate the road ahead without excessively dazzling oncoming traffic. Many modern units also integrate the daytime running light and front indicator into the same housing, which affects both the part number and the complexity of any repair.
Land Rover Discovery Headlights: Generations, Derivatives & Headlight Type
| Standard trims | Halogen as standard on older generations, with LED becoming the norm on newer models |
|---|---|
| Higher trims (HSE/Autobiography) | Full LED or Adaptive LED (Matrix on the newest generations) becomes available — genuinely non-interchangeable with the halogen or standard LED units on lower trims, requiring matching control modules and wiring to retrofit |
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Land Rover Discovery 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 Land Rover Headlights
The same part, covered across other Land Rover models.