OEM Brake Master Cylinder - E46 325i 325Ci 330i 330Ci & Z4 3.0i 3.0si

This part is listed by BMW as BMW part number 34336785666 (34-33-6-785-666) and is described as OEM Brake Master Cylinder for E46 325i, 325Ci, 330i, 330Ci (2002, 2003, 2004, 2005, 2006) and E85/E86 Z4 2.5i,3.0i,3.0si (2003, 2004, 2005, 2006, 2007, 2008).

This OEM ATE brand Brake Master Cylinder is a high-quality replacement for your failing original-equipment master cylinder. 

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.

Supersedes the following BMW part numbers:
34336779680 (34-33-6-779-680)
34316776002 (34-31-6-776-002)
34316752540 (34-31-6-752-540)
34316763670 (34-31-6-763-670)
34316770917 (34-31-6-770-917)

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

BMW Fitments:

3 Series
E46 (99-05) > 320i
E46 (99-05) > 325Ci
E46 (99-05) > 325i
E46 (99-05) > 330Ci
E46 (99-05) > 330i
Z Series
E85 / E86 Z4 (03-08) > Z4 2.5i M54
E85 / E86 Z4 (03-08) > Z4 3.0i M54
E85 / E86 Z4 (03-08) > Z4 3.0i N52
E85 / E86 Z4 (03-08) > Z4 3.0si N52