FASS Titanium Signature Series Plus Diesel Fuel System - Ford F-250/F-350/F-450 Powerstroke

The Titanium Signature Series Plus is the Signature Series finished properly. Same pump, same flow, same filtration — upgraded to black anodized O-Ring Boss fittings and black hose throughout.

Vehicle Fitment

What The Plus Adds

The Plus upgrade is fittings and hose, not pump. Flow ratings, filtration and the motor are identical to the standard Signature Series — what changes is everything the fuel passes through on its way in and out.

• Black anodized O-Ring Boss (ORB) fittings. ORB seals on an o-ring face rather than tapered threads, so there is no tape or sealant in the fuel path, no over-tightening to chase a weep, and the fitting can be removed and reused without losing its seal.
• Black hose throughout. Matches the anodised hardware for a build that looks finished under the bed instead of assembled.

If the truck gets opened up at shows, or you would rather never revisit a fitting after install day, the Plus is worth the difference. If it is a work truck and nobody is looking underneath, the standard Signature Series delivers identical fuel.

Titanium Signature Series PLUS Overview

Installing a FASS Fuel System WITHOUT a sump kit!

Flow Ratings, Part Numbers & Install Manuals

FASS rates flow on diesel at operational pressure, not on thin fluid at zero psi. The number below is what the system actually delivers.

Manuals are hosted PDFs and run 5–6 MB. Download over wi-fi before you head out to the truck.

What It Does For Your Truck

• Triples injection system life. Clean, air-free, water-free fuel is the single cheapest thing you can do for a set of injectors and a pump.
• Restores power and throttle response. Better atomisation and stable supply pressure let the injection system do what it was designed to do.
• Improves fuel economy. More complete combustion, though results vary by truck and right foot.
• Starts in the cold. Dependable operation in hard winter climates, especially paired with a FASS heater.
• Runs cleaner. Better combustion means less soot and fewer DPF regens.
• Improves fuel lubricity by at least 10%.

Advanced Filtration Technology

FASS doesn't just move fuel — it conditions it before your injection system ever sees it.

• 2 micron absolute filtration. Microglass media catches debris far smaller than an OEM filter will stop.
• Extreme Water Separator. Third-party verified to remove over 99% of water, and a genuine fail-safe if you ever pull a bad tank of fuel.
• Air and vapour removal. FASS's patented separation process strips the entrained air that causes hard starts, pressure drop, cavitation and injector wear.
• Mass Flow Return (MFR). Unused fuel is sent back through the filters instead of straight to the tank, so the diesel in your tank gets cleaner the longer you drive.

Key Features

• Whisper Technology — the quietest motor in the category
• Performance Radius Cuts for smoother internal flow with no sharp restrictions
• Heavy-duty bolt-on steel mounting brackets
• 1,000,000+ mile motor life expectancy
• 30,000 mile filter life expectancy
• Optional electric fuel heater ports for cold-climate operation
• Under a 0.5% failure rate across the product line
• Limited lifetime warranty with registration
• Engineered, manufactured and assembled in the USA

Watch BEFORE buying: Drop-In vs. Titanium Signature Series

Why FASS

FASS doesn't rush product to market. The company line is “strive for perfection, settle for excellence,” and the sub-0.5% failure rate is what that discipline buys you. Every system is engineered, built and assembled in the United States.

Register your system with FASS to activate the limited lifetime warranty.