Are all E30 Master Cylinders the same?

[Staszek]

I need a new one for my swap. Unfortunately, I sold my original one with the booster, should have waited to see if the E90 one would work.

I am buying a new one now but they are all over the map with part numbers.

I have a 1990is manual with ABS.

I have the part number for that one, but there are other from different years, that are used and new and the pricing is all different.

Help please:)

[R3VM3UP]

I can't say for sure which is the best for you but your stock master would have been a 22mm F /19mm rear I think. Earlier E30s had a master with the same sise front and rear, which would change the bias. Depending on the area of your caliper pistons you may benefit from a master that is a different size than stock anyway.

[Massive Lee]

There are many different sizes. And the iX has a diagonal mounting if I am not mistaken.

[ForcedFirebird]

"Should" be 34311161866

[ForcedFirebird]

I can't say for sure which is the best for you but your stock master would have been a 22mm F /19mm rear I think. Earlier E30s had a master with the same sise front and rear, which would change the bias. Depending on the area of your caliper pistons you may benefit from a master that is a different size than stock anyway.

22.2mm and 17.46mm

http://www.realoem.com/bmw/enUS/partxref?q=34+31+1+157+206&series=E30