Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KS 34029 found under Spring Expander Piston Ring by Wartsila Diesel Inc. The National Stock Number assigned to this part is 2815014451014, 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 KS 34029.