Husqvarna OEM Rotating Crankcase Ass. tagged 181. It has wrist pin bearing,oil pump, and worm included. Smooth rotation and bearing fitment in cases. Two holes have been repaired for the top cover as shown in pic's. One has a 5mm keensert I installed and the other is tapped out to 1/4"nc and will include screw for the cover. There was not enough material to install a keensert in this hole. Some chainrash on clutch side as shown. It is ready for a build up. Looking for $65 shipped through Paypal or money order. If you need more pic's let me know. Thanks, TG