Product Description
FLEECE FPE-L5P-FFBA-1719 L5P FUEL FILTER UPGRADE KIT (2017-2019 SHORT & LONG BED / 2020-2024 LONG BED)
The FLEECE FPE-L5P-FFBA-1719 L5P Fuel Filter Upgrade Kit is the proven solution to replace the restrictive factory fuel filter base on your 2017-2024 6.6L L5P Duramax. This Fleece-designed aluminum filter head dramatically improves fuel flow, filtration, and reliability—eliminating common issues such as hard starts, air intrusion, and leaking plastic housings.
Featuring a high-quality spin-on fuel filter, an improved water-in-fuel (WIF) sensor, and upgraded routing designed for long-term durability, this kit is engineered for long-bed trucks from 2020-2024 and both short & long bed models from 2017-2019. Whether towing, daily driving, or running tuning and supporting mods, this kit protects injectors and CP4/CP3 conversions with cleaner, more consistent filtration.
Key Benefits
- Replaces the restrictive and failure-prone factory L5P fuel filter base
- High-flow aluminum filter head prevents air leaks and housing cracks
- Uses easily replaceable spin-on fuel filters
- Upgraded WIF (water-in-fuel) sensor
- Compatible with stock or aftermarket lift pumps
- Designed for 2017-2019 short & long bed, and 2020-2024 long bed Duramax
- Protects injectors and extends fuel system lifespan
Fitment
Engine: 6.6L Duramax L5P
Model Years:
- 2017-2019 Chevrolet Silverado 2500HD/3500HD (Short & Long Bed)
- 2017-2019 GMC Sierra 2500HD/3500HD (Short & Long Bed)
- 2020-2024 Chevrolet Silverado 2500HD/3500HD (Long Bed Only)
- 2020-2024 GMC Sierra 2500HD/3500HD (Long Bed Only)
Compatible Fleece Upgrades
- FLEECE FPE-34794 POWERFLO LIFT PUMP FOR 2017-2019 DURAMAX L5P
- FLEECE FPE-34795 POWERFLO LIFT PUMP FOR 2020-2022 DURAMAX L5P
- FLEECE FPE-34384 CP3 CONVERSION KIT FOR 2017-2019 L5P DURAMAX
- FLEECE FPE-34384-1 CP3 CONVERSION KIT FOR 2020-2022 L5P DURAMAX
Why Upgrade the L5P Fuel Filter Base?
The factory plastic filter base on L5P Duramax trucks is known to introduce air into the fuel system, crack under heat cycles, and cause leaks that lead to hard-starts or injector damage. The Fleece upgrade solves all of these issues with stronger construction, better filtering, and consistent fuel delivery—ideal for both stock and tuned trucks.
Installation Notes
- Direct replacement upgrade for OEM filter base
- Includes new filter head, WIF sensor, mounting hardware, and hoses
- Works with stock filtration or aftermarket lift pumps
- No tuning required
Specifications for FLEECE FPE-L5P-FFBA-1719
| Attribute | Value |
|---|---|
| Brand | Fleece Performance Engineering |
| Part Number | FPE-L5P-FFBA-1719 |
| Engine | 6.6L Duramax L5P |
| UPC | 670875716179 |
| GTIN | 670875716179 |
| Construction | CNC-machined aluminum filter head |
| Included | Filter head, WIF sensor, hardware, hoses |
| Shipping Weight | ~7 lbs |
| Shipping Dimensions | ~12" x 10" x 8" |
| Cross Reference | FPE-34794, FPE-34795, FPE-34384, FPE-34384-1 |
| E-Codes | Not applicable |
| Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
FAQ
Does this kit replace the factory L5P fuel filter housing?
Yes. The FPE-L5P-FFBA-1719 is a complete replacement and removes the restrictive and leak-prone OEM plastic housing entirely.
Do I need tuning after installing the Fleece fuel filter kit?
No tuning is required. This upgrade maintains factory fuel system logic while improving flow and reliability.
Will this kit work with an aftermarket lift pump?
Absolutely. It is fully compatible with lift pumps such as the Fleece PowerFlo, making it ideal for high-demand setups.
Does the kit include a water-in-fuel (WIF) sensor?
Yes. The upgraded WIF sensor is included for accurate detection and improved durability.
What bed sizes does this kit fit?
The kit fits 2017–2019 short and long bed trucks, and 2020–2024 long bed trucks due to changes in frame routing.
