Stihl model · engine series 1143
MS 251
45.6 cc
The production, market and rarity details above are specific to the MS 251 roster record. The chain, bar and displacement figures below are the published family fitment for engine series 1143; confirm the pitch, gauge and drive-link count stamped on your installed bar before ordering.
Family fitment specs
Chains & bars that fit the MS 251
Pitch & gauge .325″ · .050–.063″ · recommended bar 14–18″ · round file 3/16" (4.8 mm)
Chain & bar by length
| Bar | Drive links | Shop |
|---|---|---|
| 16″ | 67 DL | Chain → Bar → |
| 18″ | 74 DL | Chain → Bar → |
Drive-link counts from STIHL's saw-chain catalog. The chain is set by pitch + length (confirm the count stamped on your bar); the guide bar also depends on your saw's mount, so verify fitment before ordering.
Files, oil & sharpening
Suggested match: Oregon 95-series (95VPX) / 21–22 LPX. Confirm the drive-link count for your exact bar length before ordering. These are equivalent aftermarket (Oregon) chains, not genuine STIHL chain — STIHL sells its own chain through its dealer network, and we're not affiliated with STIHL. New to pitch & cutter types? See the chain & cutter guide.
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Related models in series 1143
Data confidence
Chain, bar and displacement confidence applies to the shared MS 231 · 241 · 251 family data.
Something wrong or missing for the MS 251? Report a correction →