Please direct all inquires by email only. Thank you. kielanl@tacom.army.mil. Description Item: NSN: 2520-01-171-0027 Part Number: 97403 13211E8750 Quantity: 12 each Noun: Transfer Case Assy In support of the M9 ACE vehicles. FOB: DESTINATION Packaging Requirements: M/A, Specification: AK11710027