Guide · Mazda

Mazda M3 Key Replacement Guide

Last updated: August 2026 · Verified OEM part numbers

Quick answer: The Mazda M3 (2004-2006) uses the 313.8MHz 2 Button Remote Key for Mazda M3 M6 — verified against OEM part numbers. See the full compatibility table below.

Which Mazda M3 key fits your vehicle?

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Compatible keys for Mazda M3

Years	Key
2004-2006	313.8MHz 2 Button Remote Key for Mazda M3 M6
2007-2009	315MHz 2 Button Remote Key for Mazda M3 M6
2005-2009	433MHz 2 Button Remote Key for Mazda M3 M6
2005-2008	SKE216-01 313.8MHz 4D63 Chip 2 Button Flip Remote Key for Mazda M3 M6
2007-2011	SKE216-01 434MHz 4D63 Chip 2 Button Flip Remote Key for Mazda M3 M6

Before you order

Match the year range — Mazda 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 Mazda M3?

The Mazda M3 (2004-2006) uses the 313.8MHz 2 Button Remote Key for Mazda M3 M6. Check the table above for all compatible options, verified against OEM part numbers.

Do you supply Mazda M3 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 Mazda M3 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 Mazda M3 key?