Hub W/Shaft, 6L50 4-5-6 Clu (9″ Long,4.020″ OD)(.855 OD Sft 2007-UpAll parts that start with the letter U are used. They are professionally cleaned and inspected. Generally, they will be coated with a protective layer to prevent corrosion. It is recommended that any used part be completely disassembled, re-inspected, lubricated, as necessary, prior to installation. The orientation of all parts that come assembled must be verified by the installing technician. EFTP will not assume liability for any part that has been mis-installed. We do guarantee the part to be in good condition and suitable for use. Any used soft parts (seals, bushings, washers clutch plates, O-rings, etc.) should be inspected before use. It is recommended that all soft parts be replaced at the time of installation. We do not guarantee the condition of soft parts and will not replace worn or damaged soft parts that may be included or installed on a used part. We offer free 30 day returns on parts that have not been installed and offer a 1-year warranty on the part itself. We will not be liable for any subsequent damage that may result should the part malfunction.