This is a A-E1658 Plate, PTO Clutch PN: E1658Main Description As Following : A-E1658 Plate, PTO Clutch P.N: E1658 5 used in 100548ASA PTO Clutch AssemblyDim A (1): 5.743" O.D.Dim B (2): 33 Teeth Found in Section & Models : PTO Parts > PTO and Related Parts, White/ Oliver/ Mpl Moline TRACTOR: SUPER 55, White/ Oliver/ Mpl Moline TRACTOR: 2-44, White/ Oliver/ Mpl Moline TRACTOR: 550 Associated Items : New Also A-FRM-IHOL, A-OL-O-SUP55, A-OL-P-SUPER55, A-OL-S-3VOLUME, A-SMO201, A-OL-P-550, A-OL-S-3VOLUME, A-FRM-IHOL, A-MM-O-550, A-OL-O-550, A-OL-P-550, A-OL-S-3VOLUME, A-SMO201 And : 5 used in 100548ASA PTO Clutch Assembly Dim A (1): 5.743" O.D. Dim B (2): 33 Teeth