BMW 3 Series (F30) Front Bumper: Causes, Parts and Replacement

BMW · 3 Series · Body Work

A cracked corner, a kerbed splitter, or clips that have finally given up — on an F30 (2012–2018 saloon; F31 touring ran to 2019) the bumper cover alone won't get you far, since BMW splits it across several SKUs that don't interchange between trim lines. Getting the right part the first time saves a frustrating return trip to the parts counter.

Common causes

• Kerb strikes and car-park knocks. The lower splitter and corners sit low and stick out further than you'd think, especially on M Sport cars.
• Brittle clips and push-rivets. These age and snap easily once the car's a few years old, especially if the bumper's been off before.
• Cracked PDC sensor housings. The parking sensor cutouts in the bumper are a common crack point even from relatively minor impacts.

Parts and part numbers

Confirmed via ECS Tuning and go-parts.com fitment data:

• Bumper cover (general): 51117293085
• Bumper cover (Luxury Line): 51117445131
• A separate listing also gives 51118067952 for the cover — we could not resolve exactly which spec this applies to, so confirm against your VIN before ordering.
• Mount/guide bracket: 51117255393
• Impact absorber, non-M Sport (2012–2015): 51117266190
• Impact absorber, M Sport (2013–2018): 51118054186
• Impact absorber, non-M Sport facelift (2016–2019): 51117396923

We could not confirm a part number specifically labelled "M Sport" for the cover itself — if you have an M Sport car, check with your parts supplier using your VIN rather than assuming one of the covers above is correct.

A warning on removal procedure

We cross-referenced four separate removal guides for this job and found genuinely differing fastener counts between them — some cars have more or fewer clips/screws than others depending on trim and options (PDC sensors, washer jets, etc). Count what's actually on your car as you go rather than following any single guide's fastener count as gospel; working methodically from one end to the other and photographing each fixing as you remove it is the safest approach.

We also couldn't find a reliable Nm torque figure for the trim fasteners or the crash-carrier mounting bolts from any primary source — these aren't typically torque-critical in the way an engine or suspension bolt is, but if your manual gives a figure, use it.

A second angle on the same removal:

Safety first

Work on level ground with the handbrake on. If you need to jack the front of the car to access underbody fasteners, support it properly on axle stands rather than relying on the jack alone.

Tools & parts required

• Torx and flat-trim removal tools
• Socket set and ratchet
• Replacement clips and push-rivets (buy spares — old ones often snap on removal even if you're careful)
• Replacement bumper cover, VIN-matched, plus impact absorber and mount bracket if damaged

Removing the old bumper

1. Open the bonnet and remove the fasteners along the top edge of the bumper, under the lip where it meets the bonnet shut line.
2. Remove the front wheel arch liners' forward sections, or the full liner, to access the side fasteners securing the bumper to the wing.
3. Working underneath, remove the fasteners along the lower edge and the undertray sections that overlap the bumper.
4. Disconnect any PDC sensor wiring, washer jet hoses or fog light connectors before pulling the bumper forward.
5. With an assistant if possible, carefully pull the bumper cover forward and away from the car, checking you haven't missed a fastener as it comes free.

Fitting the new bumper

1. Transfer any PDC sensors, fog lights, tow-eye cover and other components from the old bumper to the new one before refitting, unless you're replacing those too.
2. Offer the new bumper into position, reconnecting wiring and hoses as you go, before fitting any fasteners.
3. Refit the side, lower and top fasteners in the reverse of the removal order, using new clips/rivets wherever the old ones look at all stressed.
4. Refit the wheel arch liners and undertray sections.

Final checks and road test

Check panel gaps are even on both sides before you call the job done — an uneven gap usually means a fastener further back hasn't seated fully. Test the PDC sensors and any washer jets work correctly before driving.

Troubleshooting & tips

• Bumper sits slightly proud on one side. Recheck the mount bracket and guide pins on that side — a bracket that's bent from the original impact won't let the bumper seat flush even with a brand-new cover.
• PDC sensors stop working after the swap. Check the connectors are fully seated; it's easy to leave one half-clipped when working quickly.
• New clips won't hold. Confirm you've bought the correct clip for that specific location — the F30 uses several different clip types across the bumper, not one universal size.

Taking photos as you remove each fastener is the single biggest time-saver for refitting cleanly. For other front-end jobs on BMWs and other makes we cover, see our guides to the BMW Z4 front bumper and the Ford Mondeo front bumper.