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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Suspension | Chassis | Brakes > Bilstein B8 cartridge replacement
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      10-20-2023, 04:58 AM   #1
opinion914
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Bilstein B8 cartridge replacement

Seems a shame to shitcan a good B8 body but I'm having a tricky time finding info on replacing the cartridges in B8's. I see some Porsche options but that's it. Anyone successfully source replacement cartridges for a BMW application? It's an easy job, but finding the cartridge is an issue. Maybe it's one of those situations where the part costs as much as the entire assembly?
TIA
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      10-20-2023, 05:57 AM   #2
johnung
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Contact Fat Cat Motorsports. That’s definitely their thing. Good luck!

https://www.fatcatmotorsports.com/

https://youtube.com/@SuspensionTruth...6ypvhZE3JhoF8H
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      10-20-2023, 06:06 AM   #3
Polo08816
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Quote:
Originally Posted by opinion914 View Post
Seems a shame to shitcan a good B8 body but I'm having a tricky time finding info on replacing the cartridges in B8's. I see some Porsche options but that's it. Anyone successfully source replacement cartridges for a BMW application? It's an easy job, but finding the cartridge is an issue. Maybe it's one of those situations where the part costs as much as the entire assembly?
TIA
Probably. The assembly isn't that expensive and I can't imagine spending the time to just replace the cartridge being worth it to be honest.
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      10-20-2023, 08:53 AM   #4
cfm56d7b
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Quote:
Originally Posted by opinion914 View Post
Seems a shame to shitcan a good B8 body but I'm having a tricky time finding info on replacing the cartridges in B8's. I see some Porsche options but that's it. Anyone successfully source replacement cartridges for a BMW application? It's an easy job, but finding the cartridge is an issue. Maybe it's one of those situations where the part costs as much as the entire assembly?
TIA
May I ask what happened to the B8 shock?
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      10-20-2023, 10:37 AM   #5
opinion914
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Originally Posted by cfm56d7b View Post
May I ask what happened to the B8 shock?
Thanks for the links and info, guys.

I noticed the front feeling a bit "static". Looked and saw some seepage from the strut. Digging a little deeper into the strut this weekend but it's clearly the cartridge that shit the bed. Not faulting them; lots of miles on 'em and they've been great.
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      10-20-2023, 04:48 PM   #6
Polo08816
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Quote:
Originally Posted by opinion914 View Post
Thanks for the links and info, guys.

I noticed the front feeling a bit "static". Looked and saw some seepage from the strut. Digging a little deeper into the strut this weekend but it's clearly the cartridge that shit the bed. Not faulting them; lots of miles on 'em and they've been great.
How many miles?
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      10-21-2023, 01:43 PM   #7
_ObiJon
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Please keep us updated. I would be curious if I can swap out my B6 cartridge for a B8, to make it easier (cheaper?) to upgrade. I was under the assumption that the bodies were the same between the two and just the cartridge was different.
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