Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DAX12939 found under Parts Kit Bearing Replacement Mechanical Equipment by Allison Transmission Holdings Inc. The National Stock Number assigned to this part is 3120010737741, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like DAX12939.