EURORELIC

51 21 1 827 423 –Catch With Key Left

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

BMW part number 51 21 1 827 423 (51211827423) is the Catch With Key Left, a body part catalogued for the E26 (M1). As of our last check (2026-10-08, bmwpartsdeal.com), BMW lists it as no longer available new (NLA). Newer number: 51211845507. Interchange records list it on E21 as well.

  1. 1 New from BMW
    Superseded, but the successor is also discontinued.
  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 1 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

Not available new according to the status source (US checked). NLA can be market-specific, so try the other region below.

View 51211827423 at bmwpartsdeal.comCross-reference 51211827423 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 51211827423 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 51211845507 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

51211827423→51211845507

Successor also discontinued per source

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

Used & NOS listings

Cross-model interchange (6)

Via successor numberCatalog match (partial list)shared number 51211845507bmwfans.info

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

E21
315 M10316 M10318 M10318i M10320 M10320 M20

+2 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

Superseded chain 51211827423 > 51211845507; final PN also discontinued on bmwpartsdeal.