EURORELIC

1245000406 · 124 500 04 06 · 124-500-04-06

124 500 04 06 Expansion Tank Cap

Available newchecked 2026-10-15source: fcpeuro.commarket: US

Yes: Mercedes-Benz 124 500 04 06 was listed as available new (US) on 2026-10-15 at fcpeuro.com.

Mercedes-Benz part number 124 500 04 06 (1245000406) is the Expansion Tank Cap, a cooling part catalogued for the W124 (300CE, 300E, 300TE), W126 (300SEL, 300SD, 380SEL), W140 (300SD, 500SEC, 500SEL), W116 (280SE, 280SEL, 450SE), W123 (230, 300D, 240D), W108 (280S, 280SE, 280SEL) and 9 more chassis. As of our last check (2026-10-15, fcpeuro.com), it is still available new from Mercedes-Benz. Also catalogued as A1245000406.

  1. 1 New from BMW
    Listed as orderable new by the status source.
  2. 2 Aftermarket new
    No sourced aftermarket equivalent yet
  3. 3 Used / NOS
    Search live listings on eBay US/DE.
  4. 4 Interchange
    No cross-model match in our data
  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

Listed as orderable new at fcpeuro.com when checked.

  • 🇺🇸 USAvailable newGenuine part listed for sale new at FCP Eurofcpeuro.com
View 1245000406 at fcpeuro.com

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 1245000406 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. You can order from either region.

United States

Europe (DE · UK · DK)

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“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.

Used & NOS listings

Cross-model interchange (0)

No interchange recorded. That doesn't prove there isn't one; it means we have no sourced match yet.

Listed directly for W124 and W126 and W140 and W116 and W123 and W108 and R107 and R129 and W114 and W115 and W201 and W109 and W202 and W111 and W210 in our data (see Fits). Models below are other listings of the same number.

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

OE number sources: 1245000406: listed as OE number(s) on fcpeuro.com 1245000406: listed as OE number(s) on fcpeuro.com 1245000406: listed as OE number(s) on fcpeuro.com

SourceUsed forChecked
FCP Euro: Mercedes Expansion Tank Cap - Genuine Mercedes 1245000406OEavailability status2026-10-14
FCP Euro: Mercedes Expansion Tank Cap - Rein 1245000406part number / notes2026-10-14
FCP Euro: Mercedes Expansion Tank Cap - Genuine Mercedes 1245000406OEpart number / notes2026-10-14
FCP Euro: Mercedes Expansion Tank cap - Meyle 0142300000part number / notes2026-10-14