Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LS5-4F1 found under Plug Piston Pin by Cooper Cameron Corp. The National Stock Number assigned to this part is 2815010231349, 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 LS5-4F1.