The FASS Drop-In Series Diesel Fuel System is an advanced air separation and filtration solution designed specifically for the 2017-2024 L5P Duramax. This system retains the factory in-tank lift pump and provides exceptional protection by removing over 99% of water, entrained air, and debris down to 2 microns.
Key Features:
- Plug-and-Play Installation: Fully bolt-on system with no cutting, wiring, or additional modifications required. Installation can be completed in under an hour.
- Enhanced Filtration: Achieves 2-micron absolute filtration and utilizes OEM water separator to ensure proper water-in-fuel sensor operation.
- Air Separation Technology: Removes entrained air and air vapor, improving fuel lubricity by up to 10% and protecting critical injection system components.
- Extreme Water Separator (XWS): Industry-leading water removal efficiency exceeding 99%.
- Performance Radius Cuts (PRC): Optimized internal porting for smooth fuel flow and reduced pressure drop.
FASS Drop-In Series Diesel Fuel System for 2017-2024 GM
Will this system create excessive back pressure on the factory lift pump?
No. The FASS R&D team designed the system to reduce pressure drop by approximately 1 PSI compared to the OEM filtration system, ensuring smooth and efficient fuel flow.Why is the OEM water separator used in this system?
The OEM water separator is essential for the proper functioning of the water-in-fuel sensor and fuel heater. FASS ensures these components operate correctly by placing the sensor on the dirty side of the separator to detect water before it reaches the clean side.- 2017-2019 Crew Cab Short Bed L5P Duramax
- 2017-2024 Crew Cab Long Bed L5P Duramax