Chainsaw Clutch Drum and Bearing for a Husqvarna 345 Chainsaw. These parts are brand new and were supposed to fit my 435 saw. According to my research these parts are supposed to fit the 340, 345, 346, 350, and 353 saws. Look at the pictures carefully to see if it looks identical. The drum has 7 sprockets and is for a .3125" chain link. The inside diameter of the sprocket is 2-11/16". The crankshaft diameter is 1/2" or a little greater. Bring your saw and the old parts and I will make sure it fits before you pay me. S0613157, S0623159