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Titanium Signature Series PLUS

Engineered for the diesel enthusiast, the FASS Titanium Signature Series PLUS is the ultimate in fuel system performance and protection. Designed to support high-horsepower builds as well as stock, this system delivers superior fuel flow, enhanced filtration, and consistent pressure—eliminating air and vapor that can wreak havoc on your injection system.


With its industry-leading filtration down to 2 microns and whisper-quiet operation, the Titanium Signature Series PLUS ensures maximum efficiency and long-term reliability for your diesel truck. Built tough in the USA and backed by FASS, this is fuel delivery—redefined.

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No-Drop Kits

Installing a Titanium Signature Series Fuel System has never been easier, or more affordable. Designed to simplify installation, No-Drop Kits include our Fuel Sump—which prevents the need for removing your fuel tank.


Better still, No-Drop Kits offer significant savings over buying a Titanium Signature Series Fuel System and Sump Kit separately! These Kits include everything you need for a simple, straightforward FASS installation—and nothing you don’t.

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Drop-In Series

FASS Drop-In Technology was developed to achieve industry-leading filtration with the simplest possible installation—making our Drop-In Series Systems a true bolt-in upgrade. If you’re mechanically inclined, a Drop-In Series Fuel System can be installed in your driveway in less than an hour! But don’t let the easy installation fool you—our Drop-In Series Fuel Systems offer the same world-class filtration as our Titanium Signature Series and Industrial Series lines.

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  • Explaining the LB7 Duramax in under 90 seconds ? #fassfuelsystems #lb7duramax #lb7
    Explaining the LB7 Duramax in under 90 seconds 💨 #fassfuelsystems #lb7duramax #lb7
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  • Save 10% on Sump Kits now through 12/5 ? Proudly designed, machined, and packaged in Missouri! Built by @fass_fabrication_design #fassfuelsystems #cummins #duramax
    Save 10% on Sump Kits now through 12/5 👀 Proudly designed, machined, and packaged in Missouri! Built by @fass_fabrication_design #fassfuelsystems #cummins #duramax
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  • Old school vibes, new school attitude ? Ernie Bogg’s 2nd Gen is a FASS-fueled neck-breaker! #fassfuelsystems #2ndgencummis #cummins
    Old school vibes, new school attitude 🥵 Ernie Bogg’s 2nd Gen is a FASS-fueled neck-breaker! #fassfuelsystems #2ndgencummis #cummins
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  • The filtration you need, the flow you want ? Our 290GPH Fuel Systems are engineered for BIG power! Owned by @ekstamspencer #fassfuelsystems #67cummins #cumminspower #dieselperformance
    The filtration you need, the flow you want 💨 Our 290GPH Fuel Systems are engineered for BIG power! Owned by @ekstamspencer #fassfuelsystems #67cummins #cumminspower #dieselperformance
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