Step One: Choose the Correct GPH for Your 6.0 Powerstroke

Fuel system sizing (measured in GPH – gallons per hour) is the most important factor when selecting a FASS system. Bigger isn’t always better—the right size depends on how your truck is built and how you use it.

140GPH – Stock & Lightly Modified 6.0 Powerstrokes

The 140GPH FASS Fuel System is ideal for:

• Completely stock trucks
• Mild tuning
• Daily drivers and tow rigs
  
  

This system delivers more than enough fuel flow while providing maximum filtration, air/vapor separation, and water removal. It’s the most popular choice for owners who want improved reliability and injector protection without unnecessary noise or excess capacity.

220GPH – Moderately Modified Builds

The 220GPH FASS Fuel System is a great fit for:

• Heavier tuning
• Upgraded injectors
• Turbo upgrades
• Trucks that see frequent towing or hard use
  
  

This system supports increased fuel demand while maintaining FASS’s industry-leading filtration and Whisper Quiet Technology. It’s the go-to option for performance-focused street trucks.

240GPH – Competition & High-Horsepower Builds

The 240GPH FASS Fuel System is designed for:

• Aggressive tuning
• Large injectors
• Competition use
• Drag racing or sled pulling
  
  

This is a race-capable fuel system intended for trucks that truly need the additional fuel volume. For stock or lightly modified trucks, this size is unnecessary—but for high-output builds, it delivers the fuel flow needed to perform safely and consistently.

Step Two: Choose the Right System Configuration

Once you’ve selected the correct GPH, the next step is choosing the system style that fits your installation preferences and goals.

Titanium Signature Series

The Titanium Signature Series is the foundation of the FASS lineup. It includes:

• Brass pipe thread fittings
• Legendary FASS air/vapor separation
• 2-micron absolute filtration
• Proven durability and reliability
  
  

This is a great choice for owners who want maximum performance and protection in a straightforward, dependable package.

Titanium Signature Series No-Drop

The No-Drop version includes the FASS Single-Bolt Fuel Sump, allowing installation without removing the fuel tank. Benefits include:

• Faster installation
• Consistent bottom-draw fuel pickup
• No tank removal required
  
  

Perfect for DIY installers or anyone looking to save time and labor.

Titanium Signature Series PLUS

The PLUS version upgrades the hardware to:

• Black O-ring boss (ORB) fittings
• Cleaner, more professional appearance
• Enhanced sealing and serviceability
  
  

Performance is identical to the standard Signature Series—the difference is in the upgraded fittings.

Titanium Signature Series PLUS No-Drop

This is the most popular configuration for many 6.0 Powerstroke owners. It combines:

• Single-Bolt Sump Kit included
• Black ORB fittings
• Premium appearance and ease of install
  
  

It’s the best of both worlds for those who want simplicity, durability, and a clean finished look.

How to Choose Quickly

If you want the short answer:

• Stock or lightly modified 6.0 Powerstroke: 140GPH Titanium Signature Series (No-Drop optional)
• Moderately modified street truck: 220GPH Titanium Signature Series or PLUS
• Competition or high-horsepower build: 240GPH Titanium Signature Series PLUS No-Drop
  
  

If you’re planning future upgrades, it’s often smart to size slightly ahead—but avoid oversizing beyond what your truck will realistically need.

Final Thoughts

Choosing the right FASS Fuel System for your 6.0 Powerstroke comes down to two things: fuel demand and installation preference. With multiple GPH options and configurations available, FASS makes it easy to match the right system to your truck—whether it’s a daily driver, tow rig, or competition build.

If you’re ever unsure, the FASS Diesel Fuel Systems customer service team is always available to help you dial in the perfect setup.