If you own a 2017 to 2025 Ford F-250, F-350, or F-450 equipped with the powerful 6.7L Powerstroke diesel engine, feeding it with the purest fuel possible is a really, really good idea. The high-pressure fuel system on these modern trucks is incredibly efficient but also sensitive to fuel contamination.
This is where an upgraded fuel filtration and separation system from FASS (Fuel Air Separation System) comes in, providing an essential line of defense.
This guide will walk you through the FASS Diesel Fuel Systems available for your 2017-2025 6.7L Powerstroke, helping you choose the right setup for your truck’s needs, from daily driving to heavy towing and high-performance applications.
Why Upgrade Your Fuel System?
The factory fuel filtration system on the 6.7L Powerstroke is decent—but not great. For the best fuel filtration and performance, an aftermarket system offers significant advantages. Here at FASS, our Fuel Systems are designed to remove entrained air, over 99% of water, and debris down to a much finer level than stock filters.
This leads to:
- 3x Injection System Life: By providing clean fuel, you drastically reduce wear and tear on your expensive injectors and high-pressure fuel pump.
- Enhanced Performance: A cleaner, air-free fuel supply can lead to a more consistent and efficient combustion process, which translates to more power, better throttle response, and potentially improved fuel economy.
- Peace of Mind: Knowing your 6.7 Powerstroke is protected from the damaging effects of contaminated fuel provides invaluable peace of mind, especially when you rely on your truck for work or long hauls.
For the Daily Driver and Lightly Modified Truck: The FASS Drop-In Series
For the many 2017+ 6.7L Powerstroke owners, the FASS Drop-In Series Fuel System (Part No. DIFSFRD1001) is the perfect solution. This system is designed as a direct replacement for the factory fuel filters and offers a significant upgrade in filtration without the complexity of a full fuel system installation.
Key Features:
- Superior Filtration: The Drop-In Series boasts a 2-micron filtration rating, a substantial improvement over the stock filter’s capability. This captures a much wider range of harmful contaminants.
- Water and Air Separation:
Like all FASS systems, the Drop-In Series effectively removes entrained air/vapor, and over 99% of the water water from your fuel, which
improves lubricity at least 10%
- Easy Installation: As the name suggests, this system is a “drop-in” replacement, utilizing the factory mounting location and fuel lines. This makes for a straightforward installation that can often be completed in an hour or two.
- Retains Factory Pump: The Drop-In Series works in conjunction with your truck’s existing factory in-tank fuel pump, simplifying the install process even more.
Who is it for? This system is ideal for stock or lightly modified trucks used for daily driving, towing, and general work purposes. It provides a significant and affordable upgrade in protection without the need for a more involved installation.
Higher Mileage and/or High Performance The FASS Titanium Signature Series
For those with a few more miles on their 6.7 Powerstroke, and/or adding performance modifications, the
FASS Titanium Signature Series
and
Titanium Signature Series
PLUS
offers a complete fuel system solution.
These systems include a new, more powerful lift pump to supply a higher volume of perfectly filtered fuel to your engine.
The Titanium Signature Series and Titanium Signature Series PLUS are available in several flow rates, measured in gallons per hour (GPH), to match your truck’s horsepower level:
-
- 140GPH: Suitable for stock to moderately modified trucks, supporting up to 700 horsepower.
- 220GPH: Designed for heavily modified trucks, supporting a range of 700 to 900 horsepower.
- 240GPH: For competition-level trucks and extreme horsepower applications, supporting 900 to 1200 horsepower.
- PLUS : The PLUS version of our Titanium Signature Series Fuel System includes black ORB fittings and black fuel line, for the cleanest possible installation.
Please note: As of 7/9/2025, we have not yet confirmed fitment of the Titanium Signature Series or Titanium Signature Series PLUS on 2025 model year Fords with the 6.7 Powerstroke. Please keep an eye on our website, as we will update these product listings as soon as testing is complete!
Key Features:
- Complete System: These kits replace the factory lift pump with a high-volume FASS pump and provide superior filtration and air/water separation.
- Whisper Technology: FASS has engineered these pumps to operate at a significantly quieter level than many other aftermarket lift pumps.
- Performance Radius Cuts: The internal design of the pump features smooth, radiused cuts to improve fuel flow and prevent the reintroduction of air into the fuel.
- “No-Drop” Option: For an even simpler installation, some Titanium Signature Series kits are available in a “No-Drop” configuration include our Fuel Sump Kit. The Fuel Sump Kit eliminates the need to lower your fuel tank during installation.
Who is it for? The Titanium Signature Series and Titanium Signature Series PLUS Systems are the go-to choice for truck owners with higher mileage, and/or significant performance upgrades—who want the absolute best in fuel delivery and protection for their 2017+ 6.7L Powerstroke.
By understanding the key differences between the FASS Drop-In Series and the Titanium Signature Series, you can make an informed decision to protect and enhance your 2017-2024 6.7L Powerstroke for years to come.
The post The BEST Fuel Filter for your 6.7L Powerstroke (2017-2025) first appeared on FASS Diesel Fuel Systems | In God We Trust.
