Product Description
Upgrade your L5P the right way. The FASS DIFSL5P1001 Drop-In Series Diesel Fuel System is a true bolt-in filtration upgrade for 2017–2023 Silverado/Sierra 2500/3500 6.6L Duramax L5P. It removes entrained air, traps particulates down to 2 microns, and separates over 99% of free & emulsified water to protect injectors and the high-pressure system while improving throttle response and fuel system longevity. Backed by FASS’s limited lifetime warranty and engineered for a clean, factory-style install.
Key Benefits
- Over 99% water separation and 2-micron particulate filtration
- Removes entrained air/vapor to improve lubricity and component life
- 100% drop-in—no permanent vehicle modifications required
- Retains factory Water-In-Fuel sensor functionality
Fitment
Fits the following GM trucks (Duramax 6.6L L5P):
- 2017–2019 Chevrolet Silverado 2500/3500, Crew Cab Short Bed
- 2017–2023 Chevrolet Silverado 2500/3500, Crew Cab Long Bed
- 2017–2019 GMC Sierra 2500/3500, Crew Cab Short Bed
- 2017–2023 GMC Sierra 2500/3500, Crew Cab Long Bed
What’s Included
- FASS DIFSL5P1001 Drop-In Series assembly
- Fittings, lines, and hardware specific to L5P
- Instructions (see manual link above)
Specifications for Fass DIFSL5P1001
| Brand | FASS Fuel Systems |
|---|---|
| Part Number | DIFSL5P1001 |
| UPC | 850044137268 |
| GTIN | 0850044137268 |
| Shipping Weight | 16 lb |
| Package Dimensions | 24" L × 20" W × 16" H |
| Shipping Method | Ground |
| Country of Origin | Not specified |
| Prop 65 | Yes — www.P65Warnings.ca.gov |
