Sensor/ Transducer. PART NO: A-RE190340. Used W/ Climatrak, Also Order R10093 O-Ring. . MODELS: John Deere TRACTOR: 6120 John Deere TRACTOR: 6220 John Deere TRACTOR: 6320 John Deere TRACTOR: 6420 John Deere TRACTOR: 6420S (Euro Edition) John Deere TRACTOR: 6520 (Euro Edition) John Deere TRACTOR: 6820 John Deere TRACTOR: 6920 John Deere TRACTOR: 6920S John Deere TRACTOR: 7220 John Deere TRACTOR: 7320 John Deere TRACTOR: 7420 John Deere TRACTOR: 7520.