Skip to content
FREE SHIPPING on US orders over $75 (oversize excepted) • Quality used E36 & E46 parts • Every part inspected & graded
Genuine BMW
BMW Part Number34 31 1 151 850

Brake master cylinder

Out of stock

One email when it is listed. Nothing else.

Free US shipping on orders over $75.00 · oversize quoted. Oversize items ship at a flat $49.99 each — free shipping does not cover them.

WARNING: Cancer and Reproductive Harm from exposure to lead — www.P65Warnings.ca.gov P65Warnings.ca.gov

Inspected and graded before it's listed · 30-day returns

Make sure this fits your car

Fitment

Select your vehicle to check fitment
Brake master cylinder – BMW diagram

Callout 01 on BMW’s drawing “Brake master cylinder”. Open the drawing →

This is a genuine BMW brake master cylinder, part number 34 31 1 151 850. You will find it under Brakes (Foot, brake master cylinder). It supersedes the older number 34 31 1 151 110, so a part carrying that number is the same part. BMW has since replaced it with 34 31 1 120 032.

BMW's catalog records no E36 or E46 it is fitted to; it belongs to other BMW models.

BMW draws it on the Brake master cylinder drawing. It weighs about 498 g (1.1 lb).

Out of stock. Request it and we will notify you when it is in stock.

Details

Weight0.50 kg
OE / Cross-Reference
03212013623

Used parts are inspected and graded: Good (minimal wear), Fair (normal wear) or Acceptable (visible wear). All fully working. Returns: 30 days if a part arrives damaged or not as described.

BMW has renumbered this part. All of these numbers are the same part.

  • 34 31 1 120 032newer
  • 34 31 1 151 850current
  • 34 31 1 151 110replaced by 34 31 1 151 850

The other parts on BMW’s drawing “Brake master cylinder”. Open the drawing →

#PartIn stockAction
01Brake master cylinder · this part2 numbers at this calloutOut of stock
02Sealing plugOut of stockRequest
03O-ringOut of stockRequest
04Pre-pressure valve2 numbers at this calloutOut of stockRequest
05Stopper bolt outerOut of stockRequest
06Compression spring primaryOut of stockRequest
07Compression spring secondaryOut of stockRequest
08Stopper bolt innerOut of stockRequest
09SleeveOut of stockRequest
10Intermediate ringOut of stockRequest
11Repair kit brake master cylinder2 numbers at this calloutOut of stockRequest

No fitment data available for this part.

Reviews

No reviews yet.

InBrakesFoot, brake master cylinder