The 4p58 Turbo Armature Assembly 18v with OEM no. N415907 is a genuine DeWalt part for DeWalt DCS391 Circular Saw
The Armature is one of the main components in any power tool, it delivers the driving force to the gearbox and should be replaced following any smoking, sparking or overheating that may overtime start to occur. This is a genuine Milwaukee armature assembly and is manufactured to their high standards as leaders in the power tool industry.
Please see below for all applicable models