Reliable magnetic-induction style drivetrain speed sensor matching legacy and active John Deere field tractor line platforms. Direct installation architecture matching OEM specifications for RE12179.Equipment Fitment:John Deere Tractor Models: 4055, 4250, 4255, 4450, 4455, 4555, 4560, 4650, 4755, 4760, 4850, 4955, 4960, 7610, 7630, 7710, 7720, 7730, 7810, 7820, 7830, 7920, 7930.