Brake Master Cylinder, BMW - F22 M235i, F30 328i/330i/340i, F32 430i/440i, F8X M2/M3/M4

This part is listed by BMW as BMW part number 34337849878 (34 33 7 849 878) and is described as a brake master cylinder for F22 M235i, F30 328i/330i/340i, F32 430i/440i, and F8X M2/M3/M4.

The master cylinder controls the distribution of brake fluid through your entire braking system, so even a small leak from a failing part can cause poor brake pedal feel and inaccurate brake modulation.  If you've found your brake pedal travel to be getting longer, particularly when sustained pressure is applied, a thorough inspection and likely replacement is highly recommended.

This is a Genuine BMW master cylinder with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.