Product Name: AH101219 John Deere gathering chain idler sprocket
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.
Part No.: G101219
1. lower idler gathering chain sprocket
2. with sealed bearing
3. 8-Tooth
4. fits John Deere 235,335,435,635 series
https://www.greenlyagparts.com/john-deere-combine-cornhead-parts/