Fuel Injector Boot - 12 Pack John Deere 4020 646B 644B 500C 770 770 690A 6600 4520 500B 770A 760 6030 700A 3020 644 772A 644A 646 510 510 4000 600 690 4230 500 7520 760A 500A 5400 5200 7700 5020 Fits John Deere Tractor(s) 510, 770, 3020, 4000, 4020, 4230, 4520, 5020, 6030, 7520 Fits John Deere Combine(s) 6600, 7700 Fits John Deere Harvester(s) 5200, 5400 Fits John Deere Construction & Industrial(s) 500, 500A, 500B, 500C, 510, 600, 644, 644A, 644B, 646, 646B, 690, 690A, 700A, 760, 760A, 770, 770A, 772A Replaces John Deere OEM nos R34765