Four (4) New Aftermarket Replacement John Deere Pencil Fuel Injectors that fit Tractor models: 3010, 3020, 4000 (Serial Number 335845 & below), 4010 (Serial Number 214999 & below), 4020 (Serial Number 335845 & below), 4040 (Serial Number 335845 & above), 4230 (Serial Number 335845 & above). Also fits Combine models: 6600, 7700, and Industrial models: 500 Early, 500A, 500B, 500C, 510, 600.Replaces Part Numbers: (AR50781 x 4), AR39811, AR46846, SE501163
