Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 870 11 001 found under Power Takeoff Transmission by Penn Detroit Diesel Allison Llc. The National Stock Number assigned to this part is 2520016678556, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 870 11 001.