FASS Titanium Signature Series Diesel Fuel System - 2020-2022 Chevy/GMC 2500/3500 6.6L Duramax L5P

This is the FASS Titanium Signature Series Diesel Fuel System built for the 2020-2022 Chevy/GMC 2500/3500 6.6L Duramax L5P. FASS Fuel Systems part number: TSC15250F220G.

Choose your flow rate below; every option on this listing fits the same truck.

This is the FASS system we put on more trucks than anything else. The Titanium Signature Series is a complete fuel air separation system: the lift pump, water separator, filtration and air removal all live in one unit that bolts to the frame. FASS's own pages describe it as built to feed the engine clean, air-free, water-free fuel.

If you're stock or lightly tuned, don't pay for flow you won't use.

Tuning: FASS lists a tune as required for these options: TSC13180F140G, TSC13250F220G, TSC15250F220G. Plan for it before install.

Why we like it

• One unit handles lift pump, water separation, filtration and air/vapor removal (per FASS)
• 2 micron absolute filtration through the XWS3002 Extreme Water Separator, with a 144 micron PF3001 particulate filter on the suction side (per FASS)
• Mass Flow Return sends fuel that isn't needed yet back through the filters, so the fuel in the tank keeps getting cleaned (per FASS)
• FASS rates flow on diesel at operating pressure, and lists horsepower support for every flow size, so you can size it to the build

Fitment

• 2020-2022 Chevy/GMC 2500/3500 6.6L Duramax L5P

Specs

• Part number: TSC15250F220G; 31.3 lb

Questions on fitment? Call the shop at (806) 503-2161.

Ships direct from a US warehouse in 1-3 business days. Most parts drop-ship directly from the manufacturer or distributor warehouse; tracking is emailed as soon as it ships.

Flat-rate shipping from $17.95 · Free on orders $999+. Free local pickup in Ropesville, TX. 30-day returns (20% restocking fee).

Questions? Call (806) 503-2161 (Mon-Fri 8am-5pm CT) or email blackdiamondultd@gmail.com.