Car & Vehicle Parts
Technical review: 2026-08-20
Replacement Car Headlights & Assemblies
Source left-hand drive / UK right-hand drive (RHD) beam pattern replacement headlights. Find new OEM, quality aftermarket (Hella, Valeo, Depo), and tested recycled units.
Where to Find Your Model or Part Number
To guarantee 100% compatibility, check these standard locations for model badges, OEM stampings, and serial numbers:
- Top or rear plastic casing sticker (shows OEM part number and beam projection approval mark)
- Molded into the clear polycarbonate front lens (E-mark approval digits)
Frequently Replaced Components & Spares
Halogen Headlamp Assemblies
H4, H7, and H1 bulb projector and reflector headlamp units
Bi-Xenon HID Headlamps with Ballast
D1S, D2S, and D3S gas-discharge headlights with integrated levelling motors
Full Matrix LED Headlights
Dynamic daytime running light (DRL) and adaptive cornering LED modules
Common Symptoms & Fault Diagnostics
| Observed Symptom | Likely Root Cause | Recommended Action |
|---|---|---|
| Condensation or pooling water inside headlight lens | Cracked rear housing, damaged breather tube vent, or degraded perimeter glue seal | Inspect and replace faulty component. |
| Headlight beam pointing too high or too low | Broken internal adjustment ball socket or seized electric levelling motor | Inspect and replace faulty component. |
Compatibility Verification Checklist
Before ordering replacement components, verify these technical specifications to avoid returns:
CRITICAL: In the UK, ensure headlamp is for RHD (Right-Hand Drive) traffic beam pattern (dips to the left)
Verify bulb type and internal bezel finish (e.g. Chrome vs Gloss Black bezel)
How to Photograph Your Part for AI Identification
- 1Photograph the manufacturer label on top of the headlight housing and the front lens.