BMW 4 Series Fog Lights: Specs, Fitment & Common Faults
On the 4 Series, all external bulbs are genuinely controlled by a single module on related models, worth checking if bulbs and fuses all check out fine.
Illustration for editorial purposes
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OEM Part Number: confirm via VIN — aftermarket Hella 1N0 354 990-031 / Hella 1N0 354 990-041
| Fog light, passenger side (LH / nearside) — aftermarket | Hella 1N0 354 990-031 (H8, with bulb); Magneti Marelli 719000000057 (H8, O.E. quality); Diederichs 1217089 (H8, with bulb); TYC 19-6016-01-9 (H8, cornering light); Diederichs 1218089 (LED, dynamic bending light); Alkar 2951842 (LED, with bulb holder) |
|---|---|
| Fog light, driver's side (RH / offside) — aftermarket | Hella 1N0 354 990-041 (H8, with bulb); Magneti Marelli 719000000058 (H8, O.E. quality); Diederichs 1217088 (H8, with bulb); TYC 19-6015-01-9 (H8, cornering light); Van Wezel 0624998 (LED, dynamic bending light); Van Wezel 0633996 (H8, PGJ19-1) |
| Bulb types | H8 (PGJ19-1); LED units (W2.1x9.5d socket) |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine units against your VIN |
| Fitment notes | Halogen H8 is the usual fitting, with LED units with dynamic bending light for cars with LED lamps. ZKW 756.04.000.03 (RH) and Johns 20 10 29-1 (LH) LED lamps are for cars with halogen daytime running lights. Abakus 444-2035R-UQ is for left-hand-drive cars only. |
BMW 4 Series Fog Lights: Rarely Used, Easy to Forget About Until Needed
Fog lights are one of those parts on the BMW 4 Series nobody checks until they need them, and with most owners using them only a few times a year, a fault can linger unnoticed for a long time before a foggy morning finally reveals it.
BMW 4 Series Fog Lights: What It Does
Front fog lights are angled and positioned to illuminate the road surface in low visibility conditions without creating the glare a standard headlight beam would in fog. Some higher trims of the 4 Series integrate fog lights into the same housing as cornering lights or daytime running lights, which affects both the part number and the complexity of any repair.
BMW 4 Series Fog Lights: Watch: Replacing It
F32 LED fog bulb install
Fitment & Compatibility
BMW 4 Series Fog Lights: Generations, Derivatives & Fog Light Type
| Standard trims | Halogen (HB4/9006) bulb-based fog lights as standard |
|---|---|
| M Sport, factory option | Genuine BMW retrofit LED fog lights are offered as a direct replacement for the halogen units on cars WITHOUT adaptive headlights, since adaptive-equipped cars use a different lighting strategy |
Not every trim level of the 4 Series comes with fog lights fitted as standard, and the housing design often differs between trims that have them integrated with other lighting functions and those with a standalone unit. Always confirm your specific trim's fitment before ordering. Whether you're sourcing a replacement fog lights for your BMW 4 Series from a dealer, specialist, or online marketplace, always check compatibility against your registration or VIN before buying, and confirm you're ordering the correct side — driver's side (RH in the UK) or passenger side (LH in the UK) — since these are not interchangeable.
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A Genuinely Useful Piece of Context Worth Knowing About Fog Light Faults — BMW 4 Series Fog Lights
If bulbs and fuses all check out fine yet the fog lights still don't work, this is genuinely worth knowing: all external bulbs are controlled by a single electronic module on related BMW models, rather than being wired directly and independently. A fault with this specific module is a commonly suspected cause worth having checked.
It's also genuinely worth knowing that a faulty fog light switch has been reliably fixed in documented cases simply by disassembling it and cleaning the internal contacts, a fix that can genuinely last for decades afterward.
BMW 4 Series Fog Lights: Common Faults, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Fog Lights Guide for common faults to check for (including exactly what fails an MOT), how easy this job is to DIY, and aftermarket advice.
More BMW Fog Lights
The same part, covered across other BMW models.