Racor genuine Aquabloc marine filter media is engineered to repel water and remove solid contaminants before they can damage precision engine components. Racor Aquabloc elements are available in different lengths for various flow rates and color-coded 2, 10 and 30 micron. The lower the micron rating, the finer the filtration. Lower micron ratings should be considered when there is no additional downstream filtration. Ultimately, the micron rating preferred will be a function of fuel quality, operating climates and maintenance schedules. This filter has a 30 GPH (114 LPH) flow rate and is a 10 micron. Replacement Fuel Filter/Water Separator For 120R-RAC-01 Filter Assembly.