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3 Series Parts

Screw cap for expansion tank

BMW Part Number:17 11 7 639 020
17117639020short number 7639020
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One email the moment one is listed — nothing else.

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Screw cap for expansion tank – BMW diagram17 View BMW DiagramSee this part on the official exploded view

Genuine BMW part 17 11 7 639 020: Screw cap for expansion tank. The number stamped on the part is 17117639020; BMW's catalog files it under the short number 7639020. You will find it on our Cooling System shelf, under Radiator with mounting. It supersedes the older number 7521071, so a part carrying that number is the same part.

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

BMW draws it on 25 diagrams, among them Cooling System Water Hoses (17_0314) and Expansion tank (17_0322). It weighs about 90 g (0.2 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 Number17 11 7 639 020
Also written as171176390207639020
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.

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