Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P31-220 found under Weight Ignition Distributor by Prestolite Battery Div. The National Stock Number assigned to this part is 2920002385448, and the Federal Supply Class is 2920 Engine Electrical System Components Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like P31-220.