Technical transmission input clutch tracking sensor engineered to optimize shifting accuracy and hydraulic response loop timing in classic John Deere utility line tractors. Replaces OEM RE12119.Equipment Fitment:John Deere Tractors: 670C to 772D series, 6820, 6920, 6920S, 8450, 8560, 8570, 8650, 8760, 8770, 8850, 8870, 8960, 8970, 9100, 9120, 9200, 9220, 9230, 9300, 9300T, 9320, 9320T, 9330, 9400, 9400T, 9420, 9420T, 9430, 9520, 9520T, 9620, 9620T.