This is a A-379313S91 O-Ring, Rear Axle Housing to Center Housing PN: 379313S91Main Description As Following : A-379313S91 O-Ring, Rear Axle Housing to Center Housing P.N: 379313S91 O-Ring should always be replaced when changing brake disc on oil immersed systems.Replaces: 83417133 Replaces: A-VPJ7202 MISCELLANEOUS , 47P3852 FORD , 83417133 FORD Found in Section & Models : Transmission & Rear Axle > Rear Axles and Hub Parts, Case-IH TRACTOR: 4100, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 340A, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 340B, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 345C, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 345D, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 3550 (W/ 3 CYL, 1/65-12/74), Ford / New Holland INDUSTRIAL/CONSTRUCTION: 420, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 4400, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 445, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 445A, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 445C, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 445D, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 4500, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 515, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 535, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 540, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 540A, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 540B, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 545, Ford / New Holland INDUSTRIAL/CONSTRUCTION: 545A Associated Items : New Also A-IH-P-ENG56CYL, A-IH-P-RMDSLPUMP, A-IH-P-4100, A-IH-S-410056, A-FO-O-230A, A-FO-P-340340A, A-FO-S-230A231, A-FO-O-340B540B, A-FO-P-340340A, A-FO-S-230A231, A-FO-O-345C, A-FO-O-343500, A-FO-P-234000, A-FO-S-3400ETC, A-MNL18259, A-FO-O-231335, A-FO-P-2600, A-FO-S-230A231, A-FO-O-343500, A-FO-P-234000 And : O-Ring should always be replaced when changing brake disc on oil immersed systems. Replaces: 83417133