Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A51P20543-1 found under Coupling Assembly Fuel Engine Fe by D F P Manufacturing Corp. The National Stock Number assigned to this part is 1560000083623, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A51P20543-1.