Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BK-9987089020 found under Parts Kit Clutch Di by Tcm America Inc. The National Stock Number assigned to this part is 2520012496573, 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 BK-9987089020.