For John Deere 4050, 4055, 4240S, 4250, 4255, 4350, 4400, 4420,4425, 4450, 4455, 4555, 4560, 4650, 4755, 4760, 4850, 4955, 4960. Function: P556745 Fuel Filter effectively remove solid impurities and contaminants in the fuel (rust, pieces of paint, dirt, etc.), to avoid blockage of the fuel system increase engine power.