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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

Return hose

BMW Part Number:17 12 7 521 778
17127521778short number 7521778
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One email the moment one is listed — nothing else.

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Return hose – BMW diagram02 View BMW DiagramSee this part on the official exploded view

This is a genuine BMW return hose, part number 17 12 7 521 778. The number stamped on the part is 17127521778; BMW's catalog files it under the short number 7521778. You will find it on our Cooling System shelf, under Coolant lines.

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

BMW draws it on 9 diagrams, among them Cooling System Water Hoses (17_0326) and Cooling System Water Hoses (17_0327). It weighs about 220 g (0.5 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 12 7 521 778
Also written as171275217787521778
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.