Brake booster dilemma

don · Post by **don** » Tue Oct 13, 2009 8:55 am

1980 e12 based 635,brake booster has failed.Part # 34331112520 NLA from BMW.Any suggestions for alternative sourcing or rebuilt units?
Thanks,Don

Mike W. · Post by **Mike W.** » Tue Oct 13, 2009 11:30 am

Assuming it's the same as E12's, posting here or in the for sale/wanted section would be a start. If push comes to shove, E21 boosters will work, they're often used in B35 conversions due I think to being flatter. You would have to bend brake lines a bit, but keep it in mind as an option. But there should be somebody with a spare I would think on a parts car. You might even try posting on Mye28, while you are looking for an E12 part, lots of guys there have an assortment of parts cars.

don · Post by **don** » Tue Oct 13, 2009 3:29 pm

thanks for the reply,the E21 unit interests me.

bdigel · Post by **bdigel** » Tue Oct 13, 2009 8:19 pm

I put an e 28 528e booster on mine without any problems

trasmu82 · Post by **trasmu82** » Sun Oct 18, 2009 10:16 pm

I have an extra from my '81 528i parts car.

Firstfives.org

Brake booster dilemma

Brake booster dilemma

Found a rebuilt unit,Maximillian

Brake Booster