Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WPP1686 found under Plunger Governor by Siemens Water Technologies Corp. The National Stock Number assigned to this part is 2990003580088, and the Federal Supply Class is 2990 Miscellaneous Engine Accessories Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like WPP1686.