X1 Rear Lower Deflector Damage, DIY Possible?

Yakivegas · 06-21-2025, 08:47 PM

2025 X1 xDrive28i with M Sport Package, haven't had it a month and got low speed rear-ended today. Minor cosmetic damage to the right lower deflector/bumper trim rear lower, and the black trim insert was shattered. No sensor damage, everything working fine.

Replacement looks fairly doable, remove screws under the deflector along with two expanding trim rivets that will have to be replaced. Then I assume there are clips all along the deflector where it meets the black upper bumper which will need to be carefully popped.

Looking at parts websites, I think the deflector is part #51-12-5-A4F-FD5, but none of the sites seem to have a way to specify color.

Is this a reasonable task to pursue? Other driver was uninsured so I would rather not make a claim through my insurance.

Thanks in advance.

bosstones · 06-22-2025, 08:40 AM

I'm not too familiar w/ your gen X1 but is the part you're looking for P/N 51128083650?

#11 from this diagram (RealOEM).

Also, that piece looks to be piano black(?). Not a bane that I have had to deal with before but, unlike body color parts/panels, I assumed those type of parts came pre-finished and not in need of paint. Perhaps others here can comment on that.

allinon72 · 06-22-2025, 09:00 AM

My wife had almost the exact same damage in the same spot with the same car...eerie! I can confirm that black trim piece comes prefinished in shadow line black and replacing it takes about 30 seconds.

The bumper portion is tougher....if you can reasonably pop out the dent and touch up the paint it might look reasonable. Ours wasn't quite that bad on the bumper portion so I was able to touch up the paint easily.

06-21-2025, 08:47 PM	#1
Yakivegas Registered 0 Rep 1 Posts Drives: X1 xDrive 28i, M Sport Package Join Date: Jun 2025 Location: Central Washington iTrader: (0)	X1 Rear Lower Deflector Damage, DIY Possible? 2025 X1 xDrive28i with M Sport Package, haven't had it a month and got low speed rear-ended today. Minor cosmetic damage to the right lower deflector/bumper trim rear lower, and the black trim insert was shattered. No sensor damage, everything working fine. Replacement looks fairly doable, remove screws under the deflector along with two expanding trim rivets that will have to be replaced. Then I assume there are clips all along the deflector where it meets the black upper bumper which will need to be carefully popped. Looking at parts websites, I think the deflector is part #51-12-5-A4F-FD5, but none of the sites seem to have a way to specify color. Is this a reasonable task to pursue? Other driver was uninsured so I would rather not make a claim through my insurance. Thanks in advance. Attached Images
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06-22-2025, 08:40 AM	#2
bosstones Lieutenant Colonel 1502 Rep 1,685 Posts Drives: o_0 Join Date: Mar 2008 Location: Suburbia iTrader: (0)	I'm not too familiar w/ your gen X1 but is the part you're looking for P/N 51128083650? #11 from this diagram (RealOEM). Also, that piece looks to be piano black(?). Not a bane that I have had to deal with before but, unlike body color parts/panels, I assumed those type of parts came pre-finished and not in need of paint. Perhaps others here can comment on that. Attached Images __________________ - Jeff bosstones' flickr Last edited by bosstones; 06-22-2025 at 08:42 AM..
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06-22-2025, 09:00 AM	#3
allinon72 Brigadier General 5150 Rep 3,947 Posts Drives: 21' M5, 23' X1 Join Date: May 2017 Location: Indianapolis, IN iTrader: (3)	My wife had almost the exact same damage in the same spot with the same car...eerie! I can confirm that black trim piece comes prefinished in shadow line black and replacing it takes about 30 seconds. The bumper portion is tougher....if you can reasonably pop out the dent and touch up the paint it might look reasonable. Ours wasn't quite that bad on the bumper portion so I was able to touch up the paint easily.
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