Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 601-053 04 31 found under Seat Valve by Mercedes Benz Ag. The National Stock Number assigned to this part is 4820013022475, 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 601-053 04 31.