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FREE SHIPPING on US orders over $75 (oversize excepted) • Quality used E36 & E46 parts • Every part inspected & graded
3 Series Parts

Bottom valve

BMW Part Number:34 31 4 050 556
34314050556short number 4050556
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One email the moment one is listed — nothing else.

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Bottom valve – BMW diagram06 View BMW DiagramSee this part on the official exploded view

This is a genuine BMW bottom valve, part number 34 31 4 050 556. The number stamped on the part is 34314050556; BMW's catalog files it under the short number 4050556. You will find it on our Brakes shelf, under Foot, brake master cylinder.

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 (34_0899) diagram. It weighs about 3 g (under 0.1 lb).

We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.

Details

BMW Part Number34 31 4 050 556
Also written as343140505564050556
QualityGenuine BMW · OEM

No fitment data available for this part.

Every used part is inspected and graded before listing. Condition grades:

  • Good — minimal wear, fully functional.
  • Fair — normal wear, fully functional.
  • Acceptable — visible wear, still functional.

Returns: 30 days if a part arrives damaged or isn't what the listing described. Full policy.

Shipping: Ships within the US. Orders ship within 1–2 business days; small parcels ship free on orders of $75.00 or more. Oversize items ship at a flat $49.99 each — free shipping does not cover them.