This is a A-R26727 Plug, Oil Pan Drain PN: R26727Main Description As Following : A-R26727 Plug, Oil Pan Drain P.N: R26727 Used w/ A-A4827R washer.Dim A (1): 1 1/4 NSReplaces: R51944 Crossed From: R51944 JOHN DEERE Found in Section & Models : Engine Parts > Engine Related Parts, John Deere BACKHOE: 300D, John Deere BACKHOE: 310D, John Deere BACKHOE: 315D, John Deere BACKHOE: 500A, John Deere COTTON PICKER: 9940, John Deere COTTON PICKER: 9950, John Deere COTTON PICKER: 9960, John Deere COTTON PICKER: 9965, John Deere COTTON PICKER: 9970, John Deere DOZER: 750C, John Deere DOZER: 850B, John Deere DOZER: 850C, John Deere EXCAVATOR: 370, John Deere EXCAVATOR: 450, John Deere EXCAVATOR: 690A, John Deere EXCAVATOR: 690B, John Deere EXCAVATOR: 792D, John Deere EXCAVATOR: 890A, John Deere EXCAVATOR: 892DLC, John Deere EXCAVATOR: 892E Associated Items : New Also A-JD-O-OMT32592, A-JD-P-PC922, A-JD-S-SM2064, A-FRM-JD, A-JD-O-OMR34406, A-JD-O-OMR41753, A-JD-O-OMR46012, A-JD-O-OMR48271, A-JD-P-PC1115, A-JD-P-PC858, A-JD-S-SM2038, A-JD-S-TM1005, A-SMJD203, A-JD-O-OMR46934, A-JD-O-OMR48273, A-JD-P-PC1116, A-JD-S-TM1006, A-SMJD203, A-FRM-JD, A-JD-O-OMR32129 And : Used w/ A-A4827R washer. Replaces: R51944 Thread Size: 1-1/4 NS