Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5049 found under Ring Set Piston by Mcquay Norris Inc. The National Stock Number assigned to this part is 2815002884859, and the Federal Supply Class is 2815 Diesel Engines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5049.