EURORELIC

17 11 1 723 071 –Expansion tank – V12 (850i/Ci/CSi)

Supersededchecked 2026-10-08source: bmwpartsdeal.commarket: US (EU: not checked)

BMW part number 17 11 1 723 071 (17111723071) is the Expansion tank – V12 (850i/Ci/CSi), a cooling part catalogued for the E31 (850Ci). As of our last check (2026-10-08, bmwpartsdeal.com), it has been superseded by 17111741167. Interchange records list it on E38, E39, E52 as well.

  1. 1 New from BMW
    Order the replacement number 17111741167
  2. 2 Aftermarket new
    No sourced aftermarket equivalent yet
  3. 3 Used / NOS
    Search live listings on eBay US/DE.
  4. 4 Interchange
    Same BMW number listed on 3 other chassis
  5. 5 Kit / reman
    None recorded yet
  6. 6 Community fix
    No forum workaround recorded yet
  7. 7 DIY guide
    No guide yet
  8. 8 Paid hunt
    We search dealers, breakers and forums for you.

Buy new

Replaced by 17111741167. Order the newer number.

View 17111723071 at bmwpartsdeal.comCross-reference 17111723071 on RealOEMCatalog diagram (bmwfans.info)

Aftermarket options (0)

No sourced aftermarket equivalent recorded yet. We only list brand numbers that a brand catalog or vendor page explicitly cross-references to this BMW number.

Where to buy

Every link opens 17111723071 at that seller: “View” = the part’s own page, “Look up” = the seller’s part-number page, “Search” = the seller’s search pre-filled with the number (successor 17111741167 where shown). You can order from either region.

United States

Europe (DE · UK · DK)

“Ships internationally” is shown only where we read it on the vendor’s own shipping page (checked 2026-09-28); otherwise check with the vendor. Import duties and taxes are the buyer’s responsibility. Amazon links carry our Associates tag, so we may earn a commission; other seller links are not affiliate links today.

Supersession chain

17111723071→17111741167

Older numbers on the left, newest on the right. Numbers without a record open a lookup.

Used & NOS listings

Cross-model interchange (10)

Via successor numberCatalog match (partial list)shared number 17111741167bmwfans.info

Same BMW part number, but the source list is truncated or market-specific. More models may apply.

E38
730i M60730iL M60735i M62735iL M62740d M67740i M60
E39
535i M62540i M62540iP M62
E52
ALPINA V8 M62

+13 more models not listed by the source.

Community fixes (0)

No forum workaround recorded yet. If you know a thread, the hunt team wants to hear about it.

Kits, reman & retrofits (0)

No kit or reman service recorded yet.

DIY

No DIY route recorded yet.

Repair guides & how-tos (0)

No repair write-up or video linked for this part yet.

Notes & sources

Successor 17111741167 listed at $135.56 on bmwpartsdeal (InStock).