Product Name: AH101219 John Deere gathering chain idler sprocket Part No.: G101219OEM No. : AH101219 / 176283C1 John Deere cornhead gathering chain sprockets, fits all 40 series after s/n 466451, also fits all 90 series. Replaces JD No. AH101219. 8" tooth, 5/8" bore, relube bearing. 1. lower idler gathering chain sprocket 2. with sealed bearing 3. 8-Tooth 4. fits John Deere 235,335,435,635 series NingBo Greenly Machinery Provides top quality products including bearings, bearing housing, grease seals, chains, disc openers, grain drill parts, planter parts, harvester parts, more replacement parts for John Deere, Case-IH, Great Plains, Kinze, etc. Our product quality is second to none, but what truly sets us apart are the service and convenience that we offer our customers.