Fiat Croma Key Replacement Guide
Last updated: September 2026 · Verified against OEM part numbers
Quick answer — Fiat Croma
The Fiat Croma (2005-2010) uses the 21100500 smart key — 4A chip, 434 MHz (SKU PCK-FA-1007) — verified against the original OEM part number. See every compatible option in the table below.
- OEM part number: 21100500
- Frequency: 434 MHz
- Chip / immobiliser: 4A
- Key type: Smart Key
- Years covered: 2005-2010
- Wholesale: MOQ 5 units per SKU, models mixable in one order
Which Fiat Croma key fits your vehicle?
💬 Ask on WhatsAppCompatible keys for Fiat Croma
| Years | Photo | Key |
|---|---|---|
| 2005-2010 | | OEM 21100500 434MHz 7961M 4A Chip Smart Key for Fiat Croma SKU: PCK-FA-1007 |
Before you order
- Match the year range — Fiat 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 Fiat Croma key?
The Fiat Croma key operates on 434 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.
What chip does the Fiat Croma key use?
The Fiat Croma uses a 4A chip. Tell your supplier the chip type when ordering so you receive the correct blank — an ID46 blank will not replace an ID47 or 4D83 key.
Which key fits my Fiat Croma?
The Fiat Croma (2005-2010) uses the OEM 21100500 434MHz 7961M 4A Chip Smart Key for Fiat Croma (SKU PCK-FA-1007). Check the table above for all compatible options, verified against OEM part numbers.
Do you supply Fiat Croma 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.
Ready to order a Fiat Croma key?
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