FASS Adjustable Fuel Pressure Regulator Fuel Pump Connector this is because your Duramax

this is because your Duramax doesn't come with a factory lift pump like other diesels

Optional electric heater ports

Whisper Technology

By doing this we have less than a 2 percent failure rating with our motor and a design that implements unique design features you can only get with FASS Diesel Fuel Systems

If you are installing a FASS Diesel Fuel System on a late model Paccar Engine with plastic quick connect fuel lines

FASS Adjustable Fuel Pressure Regulator Fuel Pump Connector this is because your DuramaxFASS Fuel Systems Adjustable Fuel Pressure Regulator (FPR 1001). The FASS Fuel Systems Adjustable Fuel Pressure Regulator is intended for aftermarket performance applications requiring higher fuel pressures than a typical daily driver. These applications can vary from drag race vehicles, competition pulling trucks or high performance marine applications. For your convenience we have pre drilled and tapped a fuel pressure gauge port that will make