This is a A-RE50979 Crankshaft PN: RE50979Main Description As Following : A-RE50979 Crankshaft P.N: RE50979 Marked R101223 Crossed From: AMRE50979 , , HCQPRE50979 , Found in Section & Models : Engine Parts > Crankshafts, John Deere ENGINE: POWERTECH 2.9L, John Deere ENGINE: 3029, John Deere ENGINE: 3029D (SARAN ENGINE SN 100000>), John Deere ENGINE: 3029T (SARAN ENGINE SN 100000>), John Deere SKID STEER LOADER: 240, John Deere SKID STEER LOADER: 250, John Deere SKID STEER LOADER: 260, John Deere SKID STEER LOADER: 8875, John Deere TRACTOR: 1550 (SN 927755>), John Deere TRACTOR: 1750 (SN 927755>), John Deere TRACTOR: 1850 (SN 927755>), John Deere TRACTOR: 2155, John Deere TRACTOR: 2355N, John Deere TRACTOR: 5039D, John Deere TRACTOR: 5045D, John Deere TRACTOR: 5045E, John Deere TRACTOR: 5050E, John Deere TRACTOR: 5055D, John Deere TRACTOR: 5055E, John Deere TRACTOR: 5060E Associated Items : New Also A-SMJD58, A-SMJD58 And : Marked R101223