Engineered specifically for 3rd Generation (2007.5–2009) Dodge Ram 2500 and 3500 trucks powered by the 6.7L 24-Valve Cummins turbo diesel, the FASS Drop-In Series Diesel Fuel System (DIFSRAM3001) provides premier fuel air separation and particulate protection without the complexity of a full aftermarket lift pump installation. Factory fuel filters leave common rail injection components vulnerable to water damage, microscopic abrasive debris, and entrained air vapors. FASS solves this by providing a 100% bolt-in filtration upgrade that retains the factory in-tank lift pump while significantly outperforming stock filter canisters.

The Drop-In Series system integrates FASS’s Extreme Water Separator (XWS) technology and a 2-micron absolute particulate filter element, removing over 99% of free and emulsified water along with performance-robbing contaminants. Internal air separation passages continuously scrub entrained air and vapor out of the diesel fuel, increasing fuel lubricity by up to 10% to prevent scoring and premature wear on Bosch CP3 pumps and common rail injectors. Designed as a true plug-and-play solution, this system retains the full functionality of the factory Water-In-Fuel (WIF) sensor and requires no fuel line cutting, wiring harness splicing, or tank modifications.

Key Features & Benefits

• 100% Drop-In Installation: True bolt-in system engineered to retain the factory in-tank lift pump without dropping the tank, running auxiliary wiring harnesses, or cutting factory lines.
• 2-Micron Absolute Particulate Filtration: Traps microscopic debris down to 2 microns absolute, providing far superior filtration than OEM canisters to safeguard CP3 pumps and injectors.
• Extreme Water Separation (XWS): Separates over 99% of free and emulsified water; features safety dam technology that protects downstream high-pressure components from severe water intrusion.
• Integrated Air & Vapor Separation: Internal passages purge entrained air bubbles and vapors from the fuel charge, boosting lubricity by up to 10% for quieter idle and extended component life.
• Performance Radius Cuts (PRC): Smooth, radiused internal passages prevent fuel turbulence, eliminate flow restrictions, and stop air reintroduction.
• Retains Factory WIF Sensor: The only drop-in 6.7L Cummins system that retains full dashboard functionality of the original Water-In-Fuel sensor.

Technical Specifications

• Manufacturer Part Number / SKU: DIFSRAM3001 (Drop-In Series)
• Truck Platform: 3rd Generation Dodge Ram Heavy Duty (DR/DH Platform)
• Engine Platform: 2007.5–2009 Dodge Ram 6.7L 24V Cummins Turbo Diesel
• Filtration Rating: 2-Micron Absolute Particulate Filtration
• Water Separation: Over 99% Free & Emulsified Water Removal (XWS Technology)
• Fuel Pump Type: Retains Factory OEM In-Tank Lift Pump (No Auxiliary Motor Required)
• Air Separation: Internal PRC Deaeration Passages
• Sensors: Retains Factory Water-In-Fuel (WIF) Sensor Integration
• Cold Weather Options: Compatible with Optional FASS Electric Fuel Heater Kits
• Warranty: FASS Limited Lifetime Warranty (with product registration)

Vehicle Fitment & Installation Notes

• 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: 2007.5, 2008, 2009
• Fitment Notice: Engineered exclusively for 3rd Generation 6.7L Cummins trucks with the factory in-tank lift pump. Does not fit 2003–2007 5.9L Cummins (use DIFSRAM2001) or 2010–2018 4th Gen Ram trucks (use DIFSRAM1001). If equipped with an aftermarket oversized fuel tank, verify clearance around the mounting location prior to final torquing.
• Installation Tip: Transfer the OEM Water-In-Fuel sensor into the FASS filter housing using a light coat of fresh clean diesel on the O-ring to prevent binding, and use the primer/key cycles to bleed the system fully before the first engine start.