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      10-26-2020, 05:26 PM   #1
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What is this part? 2014 428i

Does anyone know what this part does? I have googled the various numbers on the tag but got nowhere. It sits right behind the rear diff and is attached to the rear sub frame. Pics below, side of part with sticker and from beneath looking up. Thank you in advance for any input.

Doug
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      10-26-2020, 11:55 PM   #2
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It's a mass damper. Basically just a weight bolted on to damp certain vibrational frequencies.
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      10-27-2020, 12:08 PM   #3
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yup 43 Hertz vibration absorber
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      10-27-2020, 09:33 PM   #4
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Nah!! Its your 1.21 gigawatt flux capacitor. Marty can tell you all about it!!
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      10-28-2020, 10:22 AM   #5
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Quote:
Originally Posted by Orion4 View Post
Nah!! Its your 1.21 gigawatt flux capacitor. Marty can tell you all about it!!
Thats what I thought it was too!! LOL
I've always wanted a Flux capacitor

Doug
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      10-28-2020, 10:28 AM   #6
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Quote:
Originally Posted by ktw View Post
It's a mass damper. Basically just a weight bolted on to damp certain vibrational frequencies.
Thanks for the reply. So it dampens Sub frame vibrations that accrue from suspension movement etc..?

Doug
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