Racor S3240TUL; Rep Element 120R 10 Micron

Racor S3240TUL Rep Element 120R 10 Micron The lower the micron rating the finer the filtration. Follow your engine manufacturer s recommendation for fuel filter micron rating. S = Secondary/Final 2 micron (Brown cap) T = Primary or Secondary/Final 10 micron (Blue cap) P = Primary 30 micron (Red cap).