This is a A-181169M91 PTO Shaft PN: 181169M91Main Description As Following : A-181169M91 PTO Shaft P.N: 181169M91 Dim A (1): 6/10 SplinesDim B (2): 30.81" LongReplaces: 181173M1, 18117338, 181773M1 Stocked As: A-9N70038 Found in Section & Models : Tractor Parts Associated Items : A-181183M1 Also This is An Aftermarket Product And : Dim A (1): 6/10 Splines Dim B (2): 30.81" Long Replaces: 181173M1, 18117338, 181773M1