Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 21688541 found under Spacer Ring by Volvo Lastvagnar Ab Volvo Truck. The National Stock Number assigned to this part is 5365015789815, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 21688541.