Vauxhall Astra Key Replacement Guide
Last updated: September 2026 · Verified against OEM part numbers
Quick answer — Vauxhall Astra
The Vauxhall Astra (2018-2021 and other model years) uses the A3M15 smart key — 4A chip, 433 MHz (SKU 原板副壳 A3M15 3键灯 VA2 P) — verified against the original OEM part number. See every compatible option in the table below.
- OEM part number: A3M15
- Frequency: 433 MHz
- Chip / immobiliser: 4A
- Key type: Smart Key
- Years covered: 2018-2021 and other model years
- Wholesale: MOQ 5 units per SKU, models mixable in one order
Which Vauxhall Astra key fits your vehicle?
💬 Ask on WhatsAppCompatible keys for Vauxhall Astra
| Years | Photo | Key |
|---|---|---|
| 2018-2021 | | IM3A 433MHz A3M15 4A Chip VA2 3 Button (Light) Smart Key with OEM Board for Opel Astra Corsa SKU: 原板副壳 A3M15 3键灯 VA2 P |
| 2018-2021 | | IM3A 433MHz A3M15 4A Chip HU83 3 Button (Light) Smart Key with OEM Board for Opel Astra Corsa SKU: 原板副壳 A3M15 3键灯 HU83 P |
| 2018-2021 | | IM3A 433MHz A3M05 4A Chip HU83 3 Button (Light) Smart Key with OEM Board for Opel Astra Corsa SKU: 原板副壳 A3M05 3键灯 HU83 P |
| 2004-2009 | | EZRF 95528951 13387370 95528949 433MHz 7941 Chip HU43 Flip Remote Key for Vauxhall Astra H Zafira SKU: PCK-VH-2016 |
| 2018-2021 | | IM3A 433MHz A3M05 4A Chip VA2 3 Button (Light) Smart Key with OEM Board for Opel Astra Corsa SKU: 原板副壳 A3M05 3键灯 VA2 P |
| 2004-2009 | | EZRF 95528951 13387370 95528949 433MHz 7941 Chip HU100 Flip Remote Key for Vauxhall Astra H Zafira SKU: PCK-VH-2015 |
Before you order
- Match the year range — Vauxhall 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 Vauxhall Astra key?
The Vauxhall Astra 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.
What chip does the Vauxhall Astra key use?
The Vauxhall Astra 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 does the Vauxhall Astra (K, 2015+) use in the UK?
The Astra K uses a 433 MHz remote key, with keyless smart keys on higher trims - the same hardware as the Opel Astra. Send us a photo of your key and we will confirm the UK-market SKU and programmer.
Which key fits my Vauxhall Astra?
The Vauxhall Astra (2018-2021) uses the IM3A 433MHz A3M15 4A Chip VA2 3 Button (Light) Smart Key with OEM Board for Opel Astra Corsa (SKU 原板副壳 A3M15 3键灯 VA2 P). Check the table above for all compatible options, verified against OEM part numbers.
Ready to order a Vauxhall Astra key?
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More Vauxhall guides: Astra J · Signum · Astra K · Crossland X