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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

Heat exchanger

BMW Part Number:17 21 7 638 678
17217638678short number 7638678
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One email the moment one is listed — nothing else.

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Heat exchanger – BMW diagram-- View BMW DiagramSee this part on the official exploded view

Genuine BMW part 17 21 7 638 678: Heat exchanger. The number stamped on the part is 17217638678; BMW's catalog files it under the short number 7638678. You will find it on our Cooling System shelf, under Oil cooler. It supersedes the older numbers 7597890, 7638681 and 8624132, so a part carrying any of them 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 8 diagrams, among them Heat exch./transmission oil cooler line (17_0483) and Heat exch./transmission oil cooler line (17_0493). It weighs about 1.0 kg (2.3 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 21 7 638 678
Also written as172176386787638678
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.