This is a A-N856647 Shaft, PTO Pump, Large 1000 RPM PN: N856647Main Description As Following : A-N856647 Shaft, PTO Pump, Large 1000 RPM P.N: N856647 Inside Diameter: 1 3/4"Spline: 20 Found in Section & Models : Planting > Hydraulic System Parts, Massey Ferguson PLANTER: 8104, Massey Ferguson PLANTER: 8106, Massey Ferguson PLANTER: 8108, Massey Ferguson PLANTER: 8122, Massey Ferguson PLANTER: 8128, Massey Ferguson PLANTER: 8138, Massey Ferguson PLANTER: 8182, Massey Ferguson PLANTER: 8186, Massey Ferguson PLANTER: 8202, Massey Ferguson PLANTER: 8222, Massey Ferguson PLANTER: 8342, Massey Ferguson PLANTER: 8412, Massey Ferguson PLANTER: 8415, Massey Ferguson PLANTER: 8516, Massey Ferguson PLANTER: 8523, Massey Ferguson PLANTER: 8524, Massey Ferguson PLANTER: 8531, Massey Ferguson PLANTER: 8606, Massey Ferguson PLANTER: 8608, Massey Ferguson PLANTER: 8702 Associated Items : New Also This is An Aftermarket Product And : Inside Diameter: 1 3/4" Spline: 20