Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 157B4238 found under Valvesolenoid by Fascan International Inc. The National Stock Number assigned to this part is 4810016799669, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 157B4238.