BMW FEM System key +CAS4 system Key Replacement Guide
Last updated: September 2026 · Verified against OEM part numbers
Quick answer — BMW FEM System key +CAS4 system
The BMW FEM System key +CAS4 system (various model years) uses the NBGIDGNG1 smart key — 433 MHz (SKU PCK-BM-2033) — verified against the original OEM part number. See every compatible option in the table below.
- OEM part number: NBGIDGNG1
- Frequency: 433 MHz
- Key type: Smart Key
- Wholesale: MOQ 5 units per SKU, models mixable in one order
Which BMW FEM System key +CAS4 system key fits your vehicle?
💬 Ask on WhatsAppCompatible keys for BMW FEM System key +CAS4 system
| Years | Photo | Key |
|---|---|---|
| — | | NBGIDGNG1 9337244-01 433MHz 7953 Chip 3 Button Black Smart Key for CAS4+ EWS5 SKU: PCK-BM-2033 |
| — | | NBGIDGNG1 9337240-01 868MHz 7945 Chip 3 Button Silver Smart Key for BMW CAS4+ EWS5 SKU: PCK-BM-2036 |
| — | | NBGIDGNG1 9337240-01 433MHz 7953 Chip 3 Button Silver Smart Key for BMW CAS4+ EWS5 SKU: PCK-BM-2030 |
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
What frequency is the BMW FEM System key +CAS4 system key?
The BMW FEM System key +CAS4 system key operates on 433 MHz. Frequency is fixed in the key hardware and cannot be reprogrammed — a key bought on the wrong frequency will not lock, unlock or start the car.
Which key fits my BMW FEM System key +CAS4 system?
The BMW FEM System key +CAS4 system (various model years) uses the NBGIDGNG1 9337244-01 433MHz 7953 Chip 3 Button Black Smart Key for CAS4+ EWS5 (SKU PCK-BM-2033). 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.
Ready to order a BMW FEM System key +CAS4 system key?
💬 Ask on WhatsAppRelated: All BMW keys · All guides · Key Finder
More BMW guides: CAS4+ FEM EWS5 · FEM · F Series · X5