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

Expansion tank

BMW Part Number:17 11 1 723 520
17111723520short number 1723520
♡ Save for later
Out of Stock

One email the moment one is listed — nothing else.

Fits E36 — 320i, 323i, 323i 2.4, 325i, 325is, 328i, M3, M3 3.2
Select your vehicle to check fitment

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Expansion tank – BMW diagram01 View BMW DiagramSee this part on the official exploded view

Genuine BMW part 17 11 1 723 520: Expansion tank. The number stamped on the part is 17111723520; BMW's catalog files it under the short number 1723520. You will find it on our Cooling System shelf, under Radiator with mounting.

It fits the E36 sedan, coupe, convertible and touring (320i, 323i, 325i, 328i and M3, 1992–1999), with the M50, M52, S50 or S52 engines — and the European-market versions.

BMW draws it on 4 diagrams, among them Expansion tank (17_0081) and Radiator/Expansion Tank/Frame (17_0093). It weighs about 430 g (0.9 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 1 723 520
Also written as171117235201723520
QualityGenuine BMW · OEM
OE / Cross-Reference
2107968
SedanM52AutomaticCB85

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.