Can anybody tell me the part numbers for these bolts?

JayLancs · 06-05-2021, 08:19 AM

Hi, does anybody know the part numbers for these 2 bolts?
mine have started to rust and look horrible its a 2014 f31.

thanks in advance

ian332isport · 06-05-2021, 09:20 AM

I think it will be 07119908042.

SteveChester · 06-05-2021, 09:53 AM

Have a look on realoem.com they list out everything for your car.

Ennoch · 06-05-2021, 02:28 PM

If you can do without the car for a day or two then you should be able to get them re-plated by a local company. I'm rebuilding my Impreza at the moment and have had about 10kg of bolts and cleaned and re-plated for about £50. And that's been gold passivate rather than just plain zinc as they are. Might be a lot cheaper than going to BMW. Certainly just four suspension bolts from Subaru would be £50!

hilift · 06-05-2021, 02:48 PM

mine rusted too , quick go with the sand blaster using glass bead and they're as good as new .
it's the coating that corrodes not the steel !!

ian332isport · 06-06-2021, 03:33 AM

Quote:

Originally Posted by hilift

mine rusted too , quick go with the sand blaster using glass bead and they're as good as new .
it's the coating that corrodes not the steel !!

Zinc doesn’t corrode. Steel does corrode. It was the steel that was rusting due to a damaged (or possibly just too thin) zinc coating.

I suspect your bare steel bolts will start rusting very soon.

Ennoch · 06-07-2021, 04:45 PM

Yup, 100%. Steel and iron are the only things that rust. And unfortunately plain zinc isn't totally impervious as it acts as the sacrificial metal. If exposed to salt, or is breached then the idea is it protects the steel but eventually it will rust. This is why Subaru bolts last forever, as they are then subsequently chromate and then gold passivate coated which protects the zinc that's protecting the steel bolts.

06-05-2021, 08:19 AM	#1
JayLancs New Member 6 Rep 14 Posts Drives: BMW F31 M Sport + Estoril Blue Join Date: Jun 2020 Location: Lancashire UK iTrader: (0)	Can anybody tell me the part numbers for these bolts? Hi, does anybody know the part numbers for these 2 bolts? mine have started to rust and look horrible its a 2014 f31. thanks in advance Attached Images Last edited by JayLancs; 06-05-2021 at 10:12 AM..
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06-05-2021, 09:20 AM	#2
ian332isport Major 705 Rep 1,141 Posts Drives: F31 340i Shadow Edition Join Date: Jun 2018 Location: UK iTrader: (0)	I think it will be 07119908042.
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06-05-2021, 09:53 AM	#3
SteveChester Brigadier General 2472 Rep 4,653 Posts Drives: F82 M4 Join Date: Oct 2009 Location: Chester iTrader: (0) Garage List 2014 BMW F82 M4 [0.00]	Have a look on realoem.com they list out everything for your car. __________________ Steve Roberts UK F82 M4 I'm running the 2024 London Marathon for the British Forces Foundation - https://www.justgiving.com/fundraising/sr5/
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06-05-2021, 02:28 PM	#4
Ennoch Colonel 2257 Rep 2,048 Posts Drives: F31 335D XDrive Join Date: Sep 2020 Location: Scotland iTrader: (0)	If you can do without the car for a day or two then you should be able to get them re-plated by a local company. I'm rebuilding my Impreza at the moment and have had about 10kg of bolts and cleaned and re-plated for about £50. And that's been gold passivate rather than just plain zinc as they are. Might be a lot cheaper than going to BMW. Certainly just four suspension bolts from Subaru would be £50!
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06-05-2021, 02:48 PM	#5
hilift Private First Class 73 Rep 187 Posts Drives: 330d f31 msport Join Date: Jul 2018 Location: frozen wastes of east anglia iTrader: (0) Garage List 1979 vw t 25 camper [0.00] 2014 bmw 330 d m to ... [0.00] 2007.5 aprilia tuon ... [0.00]	mine rusted too , quick go with the sand blaster using glass bead and they're as good as new . it's the coating that corrodes not the steel !!
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06-07-2021, 04:45 PM	#7
Ennoch Colonel 2257 Rep 2,048 Posts Drives: F31 335D XDrive Join Date: Sep 2020 Location: Scotland iTrader: (0)	Yup, 100%. Steel and iron are the only things that rust. And unfortunately plain zinc isn't totally impervious as it acts as the sacrificial metal. If exposed to salt, or is breached then the idea is it protects the steel but eventually it will rust. This is why Subaru bolts last forever, as they are then subsequently chromate and then gold passivate coated which protects the zinc that's protecting the steel bolts.
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