Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 55N637-125-2143949 PIECE 4 found under Rod Piston Linear A by Curtiss Wright Electro Mechanical Corporation Div Steam And Air Solutions. The National Stock Number assigned to this part is 3040012059465, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 55N637-125-2143949 PIECE 4.