This is a A-H85252 Chain Sprocket PN: H85252Main Description As Following : A-H85252 Chain Sprocket P.N: H85252 Bore: 1.000"Bore Type: HexFits: CA555 ChainTeeth: 8 Replaces: SP149 *** NO CLASS *** , SP149H *** NO CLASS *** , Crossed From: AH83879 JOHN DEERE , AMH85252 , , CV104584 VAPORMATIC , K85252 KOOIMA COMPANY , SH95253 SHOUP , WN-H85252 , , WNH85252 , , 109820 , , 864-SMA85252 , , 864SMA85252 , Found in Section & Models : Headers/Platforms/Feeder House > Corn Head Parts, John Deere HEAD, CORN: 1243, John Deere HEAD, CORN: 1293, John Deere HEAD, CORN: 243, John Deere HEAD, CORN: 244, John Deere HEAD, CORN: 343, John Deere HEAD, CORN: 344, John Deere HEAD, CORN: 40 SERIES, John Deere HEAD, CORN: 443, John Deere HEAD, CORN: 444, John Deere HEAD, CORN: 493, John Deere HEAD, CORN: 494, John Deere HEAD, CORN: 543, John Deere HEAD, CORN: 546, John Deere HEAD, CORN: 594, John Deere HEAD, CORN: 642, John Deere HEAD, CORN: 643, John Deere HEAD, CORN: 644, John Deere HEAD, CORN: 645, John Deere HEAD, CORN: 693, John Deere HEAD, CORN: 693SH Associated Items : New Also This is An Aftermarket Product And : Bore: 1.000" Bore Type: Hex Fits: CA555 Chain Teeth: 8