BMW FEM System key + CAS4 system Key Replacement Guide

Last updated: August 2026 · Verified OEM part numbers

Quick answer: The BMW FEM System key + CAS4 system (various model years) uses the NBGIDGNG1 9337240-01 315MHz 7945 Chip 3 Button Silver Smart Key for CAS4+ EWS5 (SKU PCK-BM-2026) — verified against OEM part numbers. See the full compatibility table below.

Compatible keys for BMW FEM System key + CAS4 system

Before you order

• Match the year range — BMW changed key systems across model years. Check your registration year.
• Check your current key — the OEM number printed on your key matches the table above.
• Programming — smart keys need a compatible programmer (Xhorse, VVDI, Autel). We can advise which one works for each key.

Frequently asked questions

Which key fits my BMW FEM System key + CAS4 system?

The BMW FEM System key + CAS4 system (various model years) uses the NBGIDGNG1 9337240-01 315MHz 7945 Chip 3 Button Silver Smart Key for CAS4+ EWS5 (SKU PCK-BM-2026). Check the table above for all compatible options, verified against OEM part numbers.

Do you supply BMW FEM System key + CAS4 system keys wholesale?

Yes. We supply locksmiths and key distributors at wholesale prices with MOQ from 5 units. Message us on WhatsApp for today's price list.

Can a BMW FEM System key + CAS4 system key be programmed without the dealer?

In most cases yes, using tools like Xhorse, VVDI or Autel. We can advise the right programmer for each key SKU.

Related: All BMW keys · All guides · Key Finder

More BMW guides: CAS4+ FEM EWS5 · FEM · F Series · X5