Ford Focus Mk3 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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The Part That Fails Quietly Until It Doesn't
Degradation here is usually gradual — a slightly dimmer beam, a faint flicker on start-up — right up until the moment it isn't gradual anymore and you're left with one working light on a dark road. Catching the early signs saves a roadside scramble later.
OEM Part Number: confirm via VIN — aftermarket LH Hella 1EA 354 994-031 / RH Hella 1LE 354 827-041
| Passenger side (LH / nearside) headlight — aftermarket | Hella 1EA 354 994-031 (halogen H7/H1, black); Hella 1EE 354 827-011 (halogen H7/H1, chrome, bulbs included); Diederichs 1418985 (xenon D3S with LED DRL); Johns 32 13 09-3 (bi-xenon D3S/H7, LED DRL); Abakus 431-11A7LMLDHEM (xenon D3S); TYC 20-12570-05-2 (halogen H7/H1, chrome) |
|---|---|
| Driver's side (RH / offside) headlight — aftermarket | Hella 1LE 354 827-041 (halogen H7/H1, chrome, bulbs included, no DRL); Hella 1EA 354 994-041 (halogen H7/H1, black); Hella 1EA 354 994-021 (halogen H7/H1, chrome); Diederichs 1418984 (xenon D3S with LED DRL); Johns 32 13 10-3 (bi-xenon, LED DRL); TYC 20-12569-05-2 (halogen H7/H1, chrome) |
| Bulb types | dipped H7, main H1 (H7/H1 combined halogen units), xenon D3S, indicator PY21W, sidelight W5W |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine units against your VIN |
| Fitment notes | Halogen units dominate; xenon (D3S) units carry LED DRL. All units are listed with electric levelling. |
Ford substantially redesigned the Focus Mk3's front end at the 2015 facelift, and the headlight units changed shape and part number as a result — a pre-facelift housing will not fit a facelifted car, and vice versa. HID/Xenon-equipped cars also use different internal components to halogen-equipped ones even within the same generation, so check which bulb type your car has (visible on the headlight lens or in your handbook) before ordering.
Ford Focus Mk3 Headlights: Watch: Replacing It
Mk3 dipped and main beam bulbs.
Ford Focus Mk3 Headlights: What They Do
Beyond the obvious — lighting the road ahead — modern headlight units often integrate daytime running lights, indicators, and on higher trims, adaptive beam-shaping that adjusts based on speed and steering angle. A single failing component inside the unit can affect several of these functions at once.
Ford Focus Mk3 Headlights: Generations, Derivatives & Headlight Type
| Standard trims | Halogen as standard |
|---|---|
| Titanium X and higher | Factory-fitted Xenon low beam paired with Halogen high beam, plus LED daytime running lights and auto-levelling — genuinely a mixed-technology setup, not full Xenon on both beams |
| ST (pre-facelift) | Bi-Xenon HID projector headlights in a fixed (non-adaptive) mounting |
| ST (facelift, ST2/ST3, ~2015+) | Adaptive Bi-Xenon HID — the projectors genuinely swivel to follow the direction of steering input, a real functional difference from the earlier fixed-mount ST headlights, not just a badge change |
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Ford Focus Mk3 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 Ford Headlights
The same part, covered across other Ford models.