Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EV4037 found under Handle Brake Valve by General Signal Corp. The National Stock Number assigned to this part is 2240003656632, and the Federal Supply Class is 2240 Locomotive And Rail Car Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like EV4037.