Vauxhall Astra 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 Hella 1LG 010 011-391 / RH Hella 1LG 010 011-701

Accuracy note: Covers the Vauxhall Astra (K 2015-2021) 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	Hella 1LG 010 011-391 (halogen H7/H7 with W21/5W, DRL, motor); Hella 1LG 010 011-691 (halogen H7/H7, DRL, motor); Hella 1LG 010 011-631 (halogen H7/H7, DRL, motor); Hella 1LG 270 370-631 (halogen H7/H1 with H21W and W5W, no DRL, motor, without bulbs); Hella 1ZT 010 012-411 (bi-xenon D1S with LED and H11, DRL, motor); Prasco OP4184914 (LED with H7, motor)
Driver's side (RH / offside) headlight — aftermarket	Hella 1LG 010 011-701 (halogen H7/H7, DRL, motor); Hella 1LG 010 011-401 (halogen H7/H7, DRL, motor); Hella 1LG 010 011-341 (halogen H7/H7, motor); Hella 1LG 270 370-641 (halogen H7/H1 with H21W and W5W, no DRL, motor, without bulbs); Hella 1ZT 010 012-421 (bi-xenon D1S with LED and H11, DRL, motor); Prasco OP4184913 (LED with H7, motor)
Bulb types	dipped/main H7, indicator PY21W, W21/5W, sidelight W5W, H21W.
Genuine (OE) numbers quoted	None quoted in catalogue listings — order genuine units against your VIN
Fitment notes	Halogen units are listed with a levelling motor, and the bi-xenon Hella 1ZT units are for cars with dynamic bending light; no matrix lamp is listed, only the LED Prasco units.

A Genuinely Important UK Rule Worth Knowing Before You Buy — Vauxhall Astra Headlights

If your Astra 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.

Vauxhall Astra Headlights: Watch: Replacing It

🎬 Watch: How to replace Vauxhall Astra K headlight bulbs

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Astra K headlight bulbs; also b3CsaplZEhE (dipped bulb) as backup.

Vauxhall Astra Headlights reference plate

Vauxhall Astra Headlights: What It Does

The Vauxhall Astra'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.

Vauxhall Astra Headlights: Generations, Derivatives & Headlight Type

Standard trims	Halogen as standard
SRi and higher	Full LED headlights available
Higher trims, IntelliLux option	Genuine award-winning IntelliLux LED Matrix system — 16 LED segments (8 per side) that automatically fade out sections of the main beam around detected traffic, allowing permanent high beam; replacement is unit-only (no serviceable bulbs) and genuinely expensive — around £935+VAT for a full lamp versus under £15 for a standard halogen bulb

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Vauxhall Astra 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 Vauxhall Headlights

The same part, covered across other Vauxhall models.