Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P04-939806RR1 found under Engine Diesel by Fairbanks Morse Llc. The National Stock Number assigned to this part is 2815014108503, 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 P04-939806RR1.