Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 751C877-4 found under Seat Valve by General Electric Inc. The National Stock Number assigned to this part is 4820000866794, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 751C877-4.