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Old 09-18-2013, 03:33 PM   #1
2nd Gear Member
matt123494's Avatar
Join Date: Apr 2013
Location: Toronto
Posts: 266
brake booster question

does anyone know if you can use a normal e30 brake booster on a m3? apparently there are no more available in stock anywhere even in germany and mine recently crapped out on me. if you cant use a normal e30 booster are there any other options?
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Old 09-18-2013, 04:47 PM   #2
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Join Date: Jun 2010
Location: kitchener
Posts: 853
If you look the assemblies up the master cylinders apparently have different bores (20.64 - non m vs. 23.81 m).

I did a quick search and found this:

Apparently the booster will bolt up. However a non M MC cannot be used as the brake line threads are different.
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