
Thumbnail Filmstrip of 6.7 Cummins Drop-In Series Diesel Fuel Filter System Fass DIFSRAM4001 Images

How to install a Drop-In Series Fuel System on a 2019+ Ram w/ the 6.7 Cummins
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- Superior Filtration: Removes over 99% of water, entrained air, and debris down to 2 microns.
- Performance Enhancement: Optimizes MPG (results may vary), restores horsepower, and sharpens throttle response.
- Easy Installation: A true plug-and-play system installable in an hour or less, requiring no cutting, wiring, or modifications.
- Extreme Water Separator (XWS): Features a unique design that acts as a dam, shutting down the truck to prevent fuel system damage if capacity is reached.
- FASS Drop-In Technology: Simplifies installation while maintaining world-class filtration, similar to the Titanium Signature and Industrial Series lines.
- Performance Radius Cuts (PRC): Improves fuel flow by preventing air and vapor reintroduction and eddy currents.
- Retains full functionality of the water-in-fuel sensor.
- Includes air separation.
- Increases fuel lubricity by up to 10%.
- Extends the life of fuel injection system components.
- Achieves over 99% free and emulsified water separation.
- Provides 2-micron absolute filtration.
- Is a 100% drop-in system, requiring no modifications.
- Retains the factory in-tank lift pump.
- Internal air separation passages for removing entrained air and air vapor.

The Fass DIFSRAM4001 Drop-In Series Diesel Fuel Filter System is specifically engineered for 2019-2024 6.7L Cummins engines, providing an effective filtration solution designed to protect your engine from fuel contamination. Backed by a limited lifetime warranty, this system aims to prevent the costly damage associated with inadequate fuel filtration, which can lead to premature wear in modern diesel injection systems.
Superior Filtration: Removes over 99% of water, entrained air, and debris down to 2 microns.
Performance Enhancement: Optimizes MPG (results may vary), restores horsepower, and sharpens throttle response.
Easy Installation: A true plug-and-play system installable in an hour or less, requiring no cutting, wiring, or modifications.
Extreme Water Separator (XWS): Features a unique design that acts as a dam, shutting down the truck to prevent fuel system damage if capacity is reached.
FASS Drop-In Technology: Simplifies installation while maintaining world-class filtration, similar to the Titanium Signature and Industrial Series lines.
Performance Radius Cuts (PRC): Improves fuel flow by preventing air and vapor reintroduction and eddy currents.
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- Superior Filtration: Removes over 99% of water, entrained air, and debris down to 2 microns.
- Performance Enhancement: Optimizes MPG (results may vary), restores horsepower, and sharpens throttle response.
- Easy Installation: A true plug-and-play system installable in an hour or less, requiring no cutting, wiring, or modifications.
- Extreme Water Separator (XWS): Features a unique design that acts as a dam, shutting down the truck to prevent fuel system damage if capacity is reached.
- FASS Drop-In Technology: Simplifies installation while maintaining world-class filtration, similar to the Titanium Signature and Industrial Series lines.
- Performance Radius Cuts (PRC): Improves fuel flow by preventing air and vapor reintroduction and eddy currents.
- Retains full functionality of the water-in-fuel sensor.
- Includes air separation.
- Increases fuel lubricity by up to 10%.
- Extends the life of fuel injection system components.
- Achieves over 99% free and emulsified water separation.
- Provides 2-micron absolute filtration.
- Is a 100% drop-in system, requiring no modifications.
- Retains the factory in-tank lift pump.
- Internal air separation passages for removing entrained air and air vapor.