513442 Chainsaw Sprocket Echo CS-400EVL, CS-440EVL, CS-3900 saw
This 513442 Oregon sprocket fits Echo CS-400EVL, CS-440EVL, CS-3600, CS-3900, CS-4400, CS-5100 (after S/N 134504) John Deere 45
.325 pitch 7 tooth crank shaft diameter is 0.3937
Part# for an additional rim is 11892
1 bearing included Part# for additional bearing is 37509
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.