Installation Instructions

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FASS Signature Series Adjustable Diesel Fuel Pumps are designed to be the most versatile high performance fuel pumps on the market. They allow for adjustable fuel pressures to meet the demand of high performance GM 6.6L Duramax applications. Manufactured with the same motor used in the FASS Titanium Signature Series pumps, this adjustable fuel pump is rated at 100 gallons of diesel fuel per hour. It offers adjustable fuel pressure from 1-20 PSI to customize fuel delivery for race or competition diesel engines.

Key Features:

  • Whisper Quiet Technology
  • Adjustable Fuel Pressure
  • High Performance 100 GPH up to 290 GPH
  • Improves Fuel Flow
  • Boost Compensation Port
  • Built In Fuel Pressure Gauge Port
  • All Mounting Hardware Included

The most versatile High Performance Fuel Pump (pump only) on the market. The FASS Adjustable Signature Series Series allows you to tweak your fuel pressure to the engine on the “Fly”, delivering unmatched versatility. The Boost Compensation Port also gives the pump added and more consistent fuel pressure based on boost referencing from the turbo, keeping fuel pressure in line with the needs of the diesel engine.


This product can expose you to chemicals which are known to the State of California to cause cancer. For more information go to
California Proposition 65 Notice
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