This is a A-R56995 Manifold, Exhaust (Front) PN: R56995Main Description As Following : A-R56995 Manifold, Exhaust (Front) P.N: R56995 Marked R50391 Or R56995Replaces: AR54563 Crossed From: AMR56995 , , AR54563 JOHN DEERE , AV104985 VAPORMATIC , WN-R56995 , , 100547 , Found in Section & Models : Engine Parts > Exhaust System Parts, John Deere COMBINE: 1085, John Deere COMBINE: 1085H4, John Deere COMBINE: 1177, John Deere COMBINE: 1188, John Deere COMBINE: 1188H4, John Deere COMBINE: 6600 (6404TH Engine), John Deere COMBINE: 6602 (6404TH Or 6466TH Engine), John Deere COMBINE: 6620 (6466TH Engine), John Deere COMBINE: 6622, John Deere COMBINE: 7700 (6404TH Engine), John Deere COMBINE: 7720, John Deere COMBINE: 8820, John Deere COMBINE: 985, John Deere COMBINE: 985HY4, John Deere COTTON PICKER: 9940, John Deere COTTON PICKER: 9950, John Deere DOZER: 850B, John Deere ENGINE: 6466A (SN 067685>), John Deere ENGINE: 6466D (SN 067685>), John Deere ENGINE: 6466T (SN 067685>) Associated Items : A-RE62776, A-RE62777 Also A-JD-O-OMH111330, A-JD-O-OMH120048, A-JD-O-OMH111330, A-JD-O-OMH120048, A-JD-O-OMH111330, A-JD-O-OMH120048, A-FRM-JD, A-JD-O-OMR65532, A-JD-P-PC1295, A-JD-S-TM1057, A-JD-S-TM1172, A-SMJD50, A-JD-O-OMR65461, A-JD-S-TM1182, A-SMJD202, A-FRM-JD, A-JD-O-OMR65495, A-JD-P-PC1296, A-JD-S-TM1172, A-SMJD50 And : Marked R50391 Or R56995 Replaces: AR54563