Equivalent chain size
0.050" GAUGE
0.063" GAUGE:
Exact Fitment Specifications
To ensure compatibility with your Stihl MS 251, verify your current guide bar matches these exact metrics:
CHECK YOUR BAR STAMPS, and send us a photo of your bar stamp in the chat bubble for a Guaranteed Fit!
Fits Saw Model: Stihl | MS 251
Bar Length: 16" and 18" options
Chain Pitch: 0.325"
Chain Gauge: 0.050" and 0.063" options (CRITICAL)
Cutter Profile: Semi-chisel
Sharpening File Size: 4.8mm round
Performance
-
Durability: The semi-chisel tooth geometry is designed to withstand dry and dirty Australian hardwoods for sustained cutting.
-
Specific use: For cutting dry firewood, Australian native hardwood timbers, soft timbers.
-
Industrial Hardened Steel: Manufactured for high-torque professional saws, resisting thermal wear and chain stretch during heavy, sustained load.
How to Verify Your Chain Size
If you are unsure if this is the correct chain for your Stihl MS 251, check the side of your current guide bar. The Pitch, Gauge, and Drive Link (DL) count are typically stamped directly into the bar near the mounting bolts.
Require technical verification? Chat with our specialist team using the chat bubble on screen, or ask our community on the Alpine Chain Co. Forum.
Why Upgrade to Alpine?
Alpine Chain Co. chains are engineered with a high quality nickel and molybdenum alloy that is heat treated and chrome plated for sharpness and durability.
Alpine Chain Co. alloy is engineered to stay sharper for longer, yet be fileable when the time comes. Making it easy to keep it sharp and cut more!
Guaranteed Fit or Full Refund
Send a photo of the stamps on your bar and the model of your saw to the on page chat, and we will guarantee that the chains we send will fit your saw. A free replacement or refund will be supplied if the chain loop does not fit the specified saw.
