FASS Adjustable Signature Series Fuel Pumps are the most versatile high performance fuel pump available. Unlike most FASS pumps, the Adjustable Fuel Pump does just one job and does it well — It keeps fuel pressure in line with the needs of your diesel engine. Providing consistent, high performance improvements to your diesel’s fueling, the Fass Adjustable Signature Series Fuel Pump allows you to tweak the fuel pressure “on-the-fly”, giving you the ultimate in user control.
