Product Description
FASS TSC12165G TITANIUM SIGNATURE SERIES DIESEL FUEL SYSTEM 165GPH FOR 2015–2016 GM 6.6L DURAMAX
The FASS TSC12165G is engineered for the 2015–2016 GM 6.6L Duramax (LML), delivering 165 GPH at approximately 8–10 PSI. It combines true 2-micron filtration, air/vapor separation, and FASS Whisper Technology for quieter operation. Mass Flow Return (MFR) and Performance Radius Cuts (PRC) help maintain steady pressure and reduce aeration for consistent rail supply.
Fitment & System Notes
- Vehicle: 2015–2016 Chevrolet/GMC 2500HD/3500HD 6.6L Duramax (LML).
- Output: 165 GPH flow, preset ~8–10 PSI fuel pressure.
- Filter strategy (current): Run XWS3002 Extreme Water Separator on the pressure side and PF3001 Particulate Filter on the suction side. Extended-length options use XWS3002XL with PF3001XL.
- Includes: Complete replacement TSF/TSC-series system with bracketry and plumbing; uses bolt-on bed-bolt style mounts on late-model GM trucks.
Installation & Manuals
See the official FASS manuals portal: FASS Installation Manuals. Direct PDF for this family: TS-C12-095G / TS-C12-165G Installation Manual (PDF).
Cross-Reference & Related FASS Items (CPP Diesel)
- Other 2015–2016 Duramax systems: TSC12100G (100GPH), NDTSC12165G (No-Drop Kit), TSPC12165G (PLUS).
- Filters & service packs: XWS3002, PF3001, FP3000 Pack, FLP3000 Fleet Pack, FP3000XL Pack, FLP3000XL Fleet Pack.
- Popular accessory: STK1002 Suction Tube Kit.
FAQ
What horsepower range does 165GPH support on an LML?Great for stock to ~1,000 HP builds when fueling and tuning are matched.
Which filters should I run?
Use the current pair: XWS3002 (pressure side) and PF3001 (suction side). For extended service intervals, use XWS3002XL + PF3001XL.
Is installation drill-free?
Yes—late-model GM kits use bolt-on bed-bolt style brackets. See the install manual for specifics.
Will this help injector longevity?
Yes—steady positive pressure, air/vapor separation, and 2-micron filtration reduce fuel-related injector wear.
Specifications for Fass TSC12165G
| Brand | FASS Fuel Systems |
| Part Number | TSC12165G |
| Flow / Pressure | 165 GPH @ ~8–10 PSI (preset) |
| Engine / Years | GM 6.6L Duramax LML (2015–2016) |
| Filter Pair | XWS3002 (pressure side) + PF3001 (suction side) |
| UPC | 850044106301 |
| GTIN | 0850044106301 |
| Package Dimensions | 14.00" W × 11.50" H × 18.00" D |
| Shipping | Free Shipping (Continental U.S.) |
| Prop 65 | Yes — Cancer and Reproductive Harm |
