This is a A-9N73538 Sleeve, 1.375" PTO Shaft PN: 9N73538Main Description As Following : A-9N73538 Sleeve, 1.375" PTO Shaft P.N: 9N73538 Used with 1 3/8" PTO shaft.Dim A (1): REF. 8 Replaces: 18118338 MASSEY FERGUSON , Crossed From: 181183-38 , , 9N735-38 , Found in Section & Models : PTO Parts > PTO and Related Parts, Ford / New Holland TRACTOR: NAA (1953-54), Ford / New Holland TRACTOR: 9N, Ford / New Holland TRACTOR: 900 SERIES Associated Items : New Also A-FO-O-NAA, A-FO-P-ACCESS, A-FO-P-SHERPS, A-FO-P-1400SHER, A-FO-S-NAA, A-FO-S-SHER-TRAN, A-SMFO19, A-FO-O-9N, A-FO-P-ACCESS, A-FO-P-2N8N9N, A-FO-S-SHER-TRAN, A-FO-S-2N8N9N, A-FO-SOP-SHER54A, A-FRM-FOMM, A-MH-S-TETOSB, A-SMFO4, A-FO-O-701-901, A-FO-O-701D901D, A-FO-P-ACCESS, A-FO-P-4CYLALL And : Used with 1 3/8" PTO shaft. Dim A (1): REF. 8