OREGON rim sprocket system. This sprocket system consists of two components: Clutch cup with splined hub, and a free-floating rim. It is only the rim that makes contact with your saw chain as it is driven around your guide bar. Rim-type sprocket systems are favored by those who want the ultimate in performance and durability. Available for most chain saws applications. This sprocket system does not come with bearing.

This fits Stihl 038,038 Super Magnum

Check bar or sprocket for info to confirm if you have 3/8 pitch like this sprocket.

3/8 pitch 7 tooth crank shaft diameter is 0.4724

Part# for additional rim is 68210

Part# for bearing is 37514