Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SP12 found under Cap Filler Opening by Stant Mfg Co Inc. The National Stock Number assigned to this part is 2930002008138, and the Federal Supply Class is 2930 Engine Cooling System Components Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SP12.