Car Parts Guide
GRILLE BMW 1 Series (2019– F40) · PARTS GUIDE

BMW 1 Series Grille: Fitment, Sensors & Common Damage

On the 1 Series, the radar sensor mounting bracket is genuinely sensitive on related models, and even a minor bump can knock it out of alignment.

Generation covered: this guide is for the third-generation 1 Series (F40, 2019–present), with particular focus on 2019–2023 registered examples now old enough for parts to be a common search. Check your logbook or VIN if you're unsure which generation you have.
Illustration of a front grille Illustration for editorial purposes
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OEM Part Number: confirm via VIN — radiator grille (aftermarket) Diederichs 1282241

Accuracy note: Covers the BMW 1 Series (F20 2011-2019) as listed in the UK aftermarket catalogues. Grilles are sold by trim and facelift, and many generations had different grilles for base, mid and top trims, with or without a radar or camera opening. Where the catalogue splits a grille into left and right or upper and lower sections, buy both halves if both are damaged. The references below are UK aftermarket catalogue listings for this generation, labelled by brand with the fitment details the catalogue gives; carmakers rarely publish the genuine number against these, so match a genuine grille against your VIN if you want a guaranteed fit.
Radiator grille (aftermarket)Diederichs 1282241 (black, glossy); Diederichs 1282243 (black, mat); Diederichs 1282244 (chrome/black, glossy)
Genuine (OE) numbers quotedNone quoted in the catalogue listings — the genuine grille varies by trim level, facelift and sensor options, so order it against your VIN

BMW 1 Series Grille: Cosmetic on the Surface, Functional Underneath

The BMW 1 Series's front grille isn't purely cosmetic, even though styling is what most buyers notice first — it directs airflow to the radiator, and on many current cars, doubles as a mounting point for adaptive cruise radar or parking sensors. That means picking the right part is about more than matching the look.

Before you buy: grille design varies significantly by trim, and higher trims may integrate radar or camera sensors behind or within the grille itself. Always confirm against your VIN before ordering.

BMW 1 Series Grille: What It Does

Beyond styling, the grille on the 1 Series directs airflow to the radiator and, on trims equipped with adaptive cruise control, may house or sit directly in front of the radar sensor used for that system. A grille that looks compatible but lacks the correct sensor cutout can interfere with these systems even if it fits physically.

BMW 1 Series Grille: Watch: Fitting It

🎬 Watch: BMW 135i Front Grill Replacement

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This video is of an earlier generation of the same model; the clips and fixings can differ slightly on yours.

BMW 1 Series Grille reference plate

BMW 1 Series Grille: Generations, Derivatives & Grille Finish

Standard trimsChrome-trimmed kidney grille surround
M SportGloss black kidney grille surround is a genuine factory fitment on this trim, not just an aftermarket style, giving a noticeably more aggressive appearance than the chrome standard-trim surround
Full M modelLarger, more aggressive gloss black kidney grille aperture than M Sport, with genuinely different dimensions, not just a colour change
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A Genuinely Useful Piece of Context Worth Knowing About Radar Sensor Faults — BMW 1 Series Grille

If adaptive cruise control has stopped working, this is genuinely worth knowing: the radar sensor's mounting bracket is genuinely sensitive on related BMW models, and even a minor bump to the front bumper, such as from a parking block or a deep pothole, can knock it out of alignment.

A genuinely important finding worth knowing: a faulty radar sensor can cause "phantom braking," where the car brakes suddenly for no apparent reason, or decelerates unexpectedly while cruise control is active.

It's also genuinely worth knowing that it's normal for these systems to be limited in genuinely heavy rain or snow, but a sensor that's actually failing can become overly sensitive and shut down even in light rain or with only a small amount of dirt on it.

BMW 1 Series Grille: Common Damage, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Grille Guide for common damage types, confirming trim-specific fitment, how difficult this job is to DIY, and the ADAS calibration risk with sensor-equipped grilles.

More BMW Grille

The same part, covered across other BMW models.