FASS DIFSL5P1001 Drop-In Series Diesel Fuel System for 2017-2023 L5P Duramax

The FASS DIFSL5P1001 Drop-In Series Diesel Fuel System delivers industry-leading filtration technology specifically engineered for 2017-2019 Crew Cab Short Bed and 2017-2023 Crew Cab Long Bed GM trucks with the 6.6L L5P Duramax engine. This advanced fuel air separation system protects your expensive injection system from the devastating effects of fuel contamination while optimizing performance.

Superior Filtration and Protection:

• Removes over 99% of water from diesel fuel using the patented Extreme Water Separator (XWS) technology
• Filters debris down to 2 microns absolute for maximum protection
• Advanced air separation technology increases fuel lubricity by up to 10%
• Only drop-in system that retains full functionality of the factory water-in-fuel sensor
• If the XWS reaches capacity, it automatically shuts down the truck to prevent catastrophic fuel system damage

Performance Benefits:

• Optimizes fuel economy (results will vary)
• Restores lost horsepower caused by contaminated fuel
• Sharpens throttle response for improved drivability
• Extends the life of expensive fuel injection system components
• Features exclusive Performance Radius Cuts (PRC) for enhanced fuel flow through the aluminum housing

True Plug-and-Play Installation:

• Installs in one hour or less with basic mechanical skills
• No cutting, wiring, or modifications required
• Requires zero tuning changes—works with stock or modified engines
• Retains the factory in-tank lift pump
• Works with factory plastic cap or aftermarket billet filter cap
• Will not trigger codes or require tune adjustments

Backed by FASS's Limited Lifetime Warranty, the DIFSL5P1001 offers the same world-class filtration as their premium Titanium Signature Series in a convenient drop-in package. This system is designed for L5P Duramax owners who demand maximum protection without compromising on ease of installation.