Cross-Reference
Oregon Chain Number Guide
Updated 2026-05-20
How to use Oregon chain numbers with pitch, gauge, drive-link count, bar length, and sprocket compatibility.
Decode the Fitment Inputs
Oregon chain listings usually depend on pitch, gauge, and drive-link count. Bar length alone is not enough to choose a chain.
For example, two 16 inch bars can use different drive-link counts or gauges depending on the mount and sprocket setup.
Confirm the Bar and Sprocket
The chain pitch must match the drive sprocket, and the chain gauge must match the bar groove.
If the bar has been changed from stock, use the bar stamp and old chain count before relying on the saw model page.
Avoid Close-Looking Substitutes
A chain that is one drive link short may not tension correctly, while the wrong gauge can bind or sit loose in the bar.
When the old chain is available, count its drive links and compare the cutter sequence before ordering replacements in bulk.