Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2J3B53 found under Compressor Unit Refrigeration by Trane Us Inc. The National Stock Number assigned to this part is 4130001523902, and the Federal Supply Class is 4130 Refrigeration And Air Conditioning Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2J3B53.