EURORELIC

51 48 1 852 734 –Sound insulating cover [prod. Sep '76 - Jan '86]

NLA newchecked 2026-10-08source: bmwpartsdeal.commarket: US+EU

BMW part number 51 48 1 852 734 (51481852734) is the Sound insulating cover [prod. Sep '76 - Jan '86], a convertible top / sunroof part catalogued for the E23 (728, 728i, 728iS). As of our last check (2026-10-08, bmwpartsdeal.com), BMW lists it as no longer available new (NLA). Newer number: 54121909800. Interchange records list it on E28, E12 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    Superseded, but the successor is also discontinued.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 2 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 from the US or the European dealer we checked. BMW Classic or another dealer may still locate one with your VIN.

  • 🇺🇸 USNLA newbmwpartsdeal.com
  • 🇪🇺 EuropeNLA newsuccessor 54121909800: Leebmann24 (DE): "Not available" (our Leebmann24 lookup of 2026-09-28)leebmann24.com
View 51481852734 at bmwpartsdeal.comCross-reference 51481852734 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 51481852734 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 54121909800 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

51481852734→54121909800

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 (12)

Via successor numberCatalog match (partial list)shared number 54121909800bmwfans.info

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

E28
518 M10518i M10520i M20524d M21524td M21525e M20
E12
518 M10518i M10520 M10520 M20520i M10520i M20

+12 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 51481852734 > 54121909800; final PN also discontinued on bmwpartsdeal.