Engineered specifically for 3rd Generation (2005–2009) Dodge Ram 2500 and 3500 diesel trucks powered by the 5.9L Common Rail or 6.7L 24V Cummins, the FASS Signature Series Adjustable Fuel Lift Pump (FASD07165G) delivers high-volume fuel supply tailored for owners who already run a standalone filtration setup or prefer retaining their OEM fuel filter canister. Factory in-tank fuel transfer pumps struggle to maintain steady positive inlet pressure when subjected to aggressive ECM tuning, larger injectors, or heavy hauling loads. This vacuum drop starves the Bosch CP3 high-pressure pump, risking internal cavitation and premature wear; the FASD07165G eliminates pressure drops by providing a steady, high-volume low-pressure supply.

Built around the same robust, continuous-duty electric motor used in FASS Titanium Signature Series assemblies, this standalone pump unit flows 165 gallons per hour (GPH) with mechanical fuel pressure adjustability from 1 to 20 PSI. It incorporates an integrated boost compensation port that utilizes intake manifold boost pressure to dynamically ramp fuel supply pressure under wide-open throttle, preventing pressure sag when fueling demands peak. The kit includes FASS Whisper Technology (FWT) for quiet cab operation, an integrated 1/8" NPT gauge port for pressure monitoring, and a high-flow BHF-1005 billet bulkhead and suction tube assembly that plumbs directly into the factory tank module without cutting the filler neck.

Key Features & Benefits

• High-Volume 165 GPH Delivery: Flows 165 gallons per hour of diesel fuel to reliably feed single modified CP3 pumps, larger nozzles, and aggressive tuning supporting 600 to 900 horsepower.
• Mechanical Fuel Pressure Adjustability (1–20 PSI): Allows precise manual adjustment of pump outlet pressure to meet exact injection pump inlet specifications.
• Boost Compensation Port: Connects directly to intake manifold boost to raise fuel pressure proportionally under full throttle, eliminating pressure drop during heavy acceleration.
• Integrated Fuel Pressure Diagnostic Port: Built-in 1/8" NPT port facilitates direct connection of a mechanical or electronic fuel pressure gauge.
• FASS Whisper Technology (FWT): Precision gear clearances, acoustically engineered radius cuts, and specialized coatings lower electric motor decibels to a quiet hum.
• High-Flow Billet Tank Bulkhead & Draw Straw: Includes the BHF-1005 6061-T6 billet bulkhead fitting and PTFE suction tube, providing unrestricted 5/8" suction and 1/2" return routing directly through the tank basket.
• Dedicated Fuel Pump Design: Designed specifically for trucks using factory filtration or external custom filter heads, eliminating the redundant expense of duplicate spin-on filters.

Technical Specifications

• Manufacturer Part Number / SKU: FASD07165G (FAS-D07-165G / Adjustable Series)
• Truck Platform: 3rd Generation Dodge Ram Heavy Duty (DR/DH Platform)
• Engine Platform: 2005–2007 5.9L 24V Common Rail & 2007.5–2009 6.7L 24V Cummins Turbo Diesel
• Flow Rating: 165 Gallons Per Hour (GPH)
• Operating Pressure: Adjustable from 1 to 20 PSI
• Horsepower Rating: Recommended for 600 HP to 900 HP Applications
• Voltage & Motor Type: 12V DC Electric Continuous-Duty Motor
• Suction Hardware: 6061-T6 Billet Bulkhead Fitting with 5/8" PTFE Suction Tube & 1/2" Return Port
• Auxiliary Ports: Built-In Boost Compensation Port & 1/8" NPT Pressure Gauge Port
• Warranty: FASS Limited Lifetime Warranty (with completed product registration)

Vehicle Fitment & Installation Notes

• 2005–2007 Dodge Ram 2500 (3rd Gen) – 5.9L 24V Common Rail Cummins
• 2005–2007 Dodge Ram 3500 (3rd Gen) – 5.9L 24V Common Rail Cummins
• 2007.5–2009 Dodge Ram 2500 (3rd Gen) – 6.7L 24V Cummins Turbo Diesel
• 2007.5–2009 Dodge Ram 3500 (3rd Gen) – 6.7L 24V Cummins Turbo Diesel
• Fits Model Years: 2005, 2006, 2007, 2007.5, 2008, 2009
• Fitment Notice: Compatible with 3rd Gen trucks equipped with in-tank lift pumps. This is a pump-only unit and must be plumbed into the factory fuel filter housing or an aftermarket secondary filter head (such as the S&S Diesel regulated filter head). 2010–2014 4th Gen trucks require part number FASD05165G.
• Installation Tip: Install a dedicated fuel pressure gauge into the 1/8" NPT port prior to adjusting line pressure; adjust the regulator screw in small increments until idle pressure stabilizes at your target CP3 inlet spec (typically 15–18 PSI) before routing the boost compensation reference line to the intake manifold.