Genuine OEM Stihl TS420 replacement shroud assembly shroud part # 42380801608 but this comes with a lot of other parts the shroud, trigger, trigger cap, top molding, rubber insert, on/off, etc... for being previously used this shroud assembly is in great shape ready to install and use as is. All works the way it should. Guaranteed quality parts fits Stihl TS420 saws (does not fit TS420 with electronic water control)