Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PY20S61-2646 found under Guide Engine Poppet by Lenard Packaging Co Inc. The National Stock Number assigned to this part is 2815003641138, 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 PY20S61-2646.