This is a A-RE58348 Clutch, A/C Compressor PN: RE58348Main Description As Following : A-RE58348 Clutch, A/C Compressor P.N: RE58348 Used With AT163728 A/C Compressor.Dim A (1): 1 GrooveDim B (2): Dia.: 146MM / 5.748"Dim C (3): 24 Volt Stocked As: A-RE55422 Found in Section & Models : Air Conditioning Parts > Compressor Clutches, John Deere BACKHOE: 300D, John Deere BACKHOE: 310D, John Deere BACKHOE: 315D, John Deere BACKHOE: 410D, John Deere BACKHOE: 510D, John Deere BACKHOE: 710D, John Deere COTTON PICKER: 9965 (SN 2001>), John Deere COTTON PICKER: 9970, John Deere CRAWLER: 655B, John Deere CRAWLER: 755B, John Deere DOZER: 450H, John Deere DOZER: 550H, John Deere DOZER: 650H, John Deere DOZER: 750B, John Deere DOZER: 750C (SN <881315), John Deere DOZER: 750C-II, John Deere DOZER: 850B, John Deere DOZER: 850C, John Deere DOZER: 850C-II, John Deere GRADER: 670B Associated Items : New Also This is An Aftermarket Product And : Used With AT163728 A/C Compressor. Dim A (1): 1 Groove Dim B (2): Dia.: 146MM / 5.748" Dim C (3): 24 Volt