Vauxhall Astra Key Replacement Guide

Last updated: August 2026 · Verified OEM part numbers

Quick answer: 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) — verified against OEM part numbers. See the full compatibility table below.

Compatible keys for Vauxhall Astra

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

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.

Do you supply Vauxhall Astra 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 Vauxhall Astra 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 Vauxhall keys · All guides · Key Finder

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