This is a A-AH101219 Sprocket, Lower Idler PN: AH101219Main Description As Following : A-AH101219 Idler Sprocket P.N: AH101219 GreaseableBore: .648"Teeth: 8 Crossed From: AH101219-N , , AMAH101219 , , CV103238 VAPORMATIC , K101219 KOOIMA COMPANY , SH201219 SHOUP , TP-AH101219 , , WN-AH101219 , , WNAH101219 , , 110140 , , 1115-83815 JOHN DAY , 864-SMA101219 , Found in Section & Models : Headers/Platforms/Feeder House > Corn Head Parts, John Deere HEAD, CORN: 1243 (w/ SN 466450>), John Deere HEAD, CORN: 1293, John Deere HEAD, CORN: 235 (Lower gathering idler), John Deere HEAD, CORN: 243 (w/ SN 466450>), John Deere HEAD, CORN: 244 (w/ SN 466450>), John Deere HEAD, CORN: 335 (Lower gathering idler), John Deere HEAD, CORN: 343 (w/ SN 466450>), John Deere HEAD, CORN: 344 (w/ SN 466450>), John Deere HEAD, CORN: 435 (Lower gathering idler), John Deere HEAD, CORN: 443 (w/ SN 466450>), John Deere HEAD, CORN: 444 (w/ SN 466450>), John Deere HEAD, CORN: 493, John Deere HEAD, CORN: 494, John Deere HEAD, CORN: 543 (w/ SN 466450>), John Deere HEAD, CORN: 546 (w/ SN 466450>), John Deere HEAD, CORN: 594, John Deere HEAD, CORN: 635 (Lower gathering idler), John Deere HEAD, CORN: 642 (w/ SN 466450>), John Deere HEAD, CORN: 643 (w/ SN 466450>), John Deere HEAD, CORN: 644 (w/ SN 466450>) Associated Items : New Also This is An Aftermarket Product And : Greaseable Bore: .648" Teeth: 8