Reference · machine identification
STIHL serial number lookup
Every STIHL machine carries a serial number on the housing — usually on the crankcase near the bar mount on a saw, or on the shaft housing on a trimmer. Enter it below and, if it is one of the 202 million recorded here, you get the model it was built as. Many genuine machines are not recorded — read the coverage note below before concluding anything from a miss.
What this can and cannot tell you
It identifies the model
The serial maps to a production batch, and 95% of the recorded batches name a model — often a precise variant, like MS 500i-Z rather than just MS 500i. The rest still pin the engine family. Where this guide holds parts diagrams for that family, you get a direct link to them.
It does not date your machine
STIHL allocates serials in blocks by plant and product line, not in one running sequence, so a higher number does not mean a newer machine. Any production years shown are the model's span, not your machine's build date. See manufacture year for what can honestly be said.
How complete this is — and it is not very
The 202 million serials here arrive as 81,003 separate runs scattered across a range 1 billion numbers wide. That is 20% covered and 80% holes, some of them tens of millions of numbers across, and 746 of every 1,000 million-blocks hold nothing at all. A miss is ordinary, not suspicious.
The gaps are not organised by model, either, so a family can be well recorded and your particular machine still absent. The 026 is a good example: hundreds of its batches are here, named down to 026 PRO and 026 ARCTIC, yet an 026 in the wrong band of the numbering returns nothing at all.
So a number that comes back empty tells you about this data, not about your saw. Work from the model name on the housing instead: browse models or use part lookup.
Coverage is partial and this is not a fitment guarantee. See provenance for how confident this guide is about what.