Abilene Machine | John Deere engine-overhaul-kits Abilene Machine is proud to offer our FARMTUFF® Ag Replacement Parts for John Deere® Engine Overhaul Kits and much more. All of the FARMTUFF® Replacement Parts are made to meet OEM specifications and requirements. That means when you buy from Abilene Machine you can be rest assured that you are g.. John Deere 4430 Engine Rebuild Kits - yesterdaystractors John Deere 4430 Engine Rebuild Kits for sale at discount prices. Same-day shipping and easy returns. Compare our prices! We have the right parts for your old tractor.