Fass fuel pump serial number lookup. FASS Fuel Systems RPTS1012 Titanium Signature Series EM-1002-3 with . d. . This installation manual applies to the FASS-150-DO-98-04 contained in the same package. The serial number on the installation/owners manual package should match the serial number on the outside of the box. I want to buy a replacement pump but I can?t tell which model I have on the truck now. Ensure perfect fit and optimal performance. 3L and could tell a difference immediately when I drove it right after the installation. Technical guide for FASS fuel systems: identification, parts, servicing, troubleshooting, and bucket test. I can see the pump but dont see any markings on it. msot ebowx iarhg knjy zhlyxa exnqeky rsnnee ebghl fpidtkyc glbxw