Product Description
FLEECE FPE-L5P-FFBA-20 L5P FUEL FILTER UPGRADE KIT (2020-2024 SHORT BED & 2024 STD CAB LONG BED) SILVERADO/SIERRA 2500/3500
Upgrade your 2020-2024 6.6L L5P Duramax with the ultimate in fuel cleanliness and flow — the FLEECE FPE-L5P-FFBA-20 Fuel Filter Upgrade Kit. Engineered by Fleece Performance Engineering to exceed factory standards, this kit is purpose-built to protect your injectors, deliver smooth performance, and provide peace of mind when towing or hauling heavy loads.
This fuel filter kit features a high-flow premium media filter element, reinforced housing, upgraded sealing components, and full installation hardware. Ideal for OEM replacement or performance-minded builds, this kit also includes all required fittings and gaskets — making installation straightforward and reliable. Whether you’re building a daily driver or a heavy-duty tow rig, this filter upgrade is a foundational upgrade to keep your L5P running strong.
Key Features:
- Full fuel filter upgrade kit for 2020-24 L5P 6.6L Duramax (Silverado/Sierra 2500/3500)
- Performance-grade filter media for improved contaminant capture and flow stability
- Upgraded housing and sealing to resist fuel system pressure and contamination
- Included hardware, gaskets, and fittings for straight forward install
- No core charge required — keep your factory filter element as a backup
- Optimized for both stock and tuned applications — excellent for towing, heavy duty, and off-road usage
- Backed by Fleece Performance Engineering’s quality standards and CPP Diesel support
Fitment
Engine: 6.6L Duramax L5P
Model Years: 2020, 2021, 2022, 2023, 2024 (Short Bed); 2024 Standard Cab Long Bed
Applicable Models:
- 2020-2024 Chevrolet Silverado 2500HD (Short Bed)
- 2020-2024 Chevrolet Silverado 3500HD (Short Bed)
- 2020-2024 GMC Sierra 2500HD (Short Bed)
- 2020-2024 GMC Sierra 3500HD (Short Bed)
- 2024 Chevrolet Silverado 2500HD (Standard Cab Long Bed)
- 2024 Chevrolet Silverado 3500HD (Standard Cab Long Bed)
- 2024 GMC Sierra 2500HD (Standard Cab Long Bed)
- 2024 GMC Sierra 3500HD (Standard Cab Long Bed)
Recommended Fleece Cross-Reference / Related Parts
- Stock-style fuel filter replacement for L5P: FLEECE FPE-L5P-FFBA-10 L5P Fuel Filter Kit (2020-2024 Short Bed)
- High-capacity fuel filter kit for L5P with larger tank (optional upgrade): FLEECE FPE-L5P-FFBA-30 L5P Fuel Filter Kit (2020-2024 Silverado/Sierra 2500/3500)
- Fuel system upgrade bundle with lift pump and filter: FLEECE FPE-L5P-FFBA-50 L5P Fuel System Upgrade Kit (2020-2024 Silverado/Sierra 2500/3500)
Why Upgrade with Fleece?
The fuel system on the L5P Duramax is mission-critical — clean, stable fuel pressure signals the injectors, and contaminants or flow restrictions lead to immediate performance issues. The Fleece FPE-L5P-FFBA-20 kit uses premium filtration media and optimized housing design to reduce fuel system wear, support higher tuning levels, and improve durability for trucks that work hard. Whether you’re towing, hauling, or enjoying heavy duty weekend duty, this upgrade helps keep things flowing the right way.
Installation Notes
- Always replace the filter element with the supplied premium media and torque the housing per Fleece specs.
- Bleed the system properly after installation — follow the factory sequence.
- Inspect the factory filter housing and surrounding brackets for damage or corrosion while installing.
- Tune or monitor fuel pressure if your truck’s been modified for higher flow or boost to ensure compatibility.
Specifications for FLEECE FPE-L5P-FFBA-20
| Attribute | Value |
|---|---|
| Brand | Fleece Performance Engineering |
| Part Number | FPE-L5P-FFBA-20 |
| Engine | 6.6L Duramax L5P (2020-2024) |
| Fitment Years & Models | 2020-2024 Silverado/Sierra 2500/3500 (Short Bed) & 2024 Standard Cab Long Bed |
| UPC | 810059457942 |
| GTIN | 810059457942 |
| Includes | High-flow filter, upgraded housing, gaskets, fittings, installation hardware |
| Core Charge | No core charge required |
| Shipping Info | Approx. 8 lb ship weight; boxed dimensions about 14" x 10" x 8"; free ground shipping from CPP Diesel |
| Cross Reference | Fleece FPE-L5P-FFBA-10, FPE-L5P-FFBA-30, FPE-L5P-FFBA-50 |
| E-Codes | Not applicable |
| Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
| Warranty | 1 Year Limited Parts Warranty |
FAQ
Will this filter upgrade kit fit my 2023 Silverado 3500 with the L5P engine?
Yes — the FLEECE FPE-L5P-FFBA-20 is designed for 2020-2024 L5P 6.6L Duramax vehicles and covers 2023 Silverado/Sierra 2500/3500 short-bed models. For 2024 Standard Cab Long Bed models it’s also compatible.
Is the factory fuel filter element sufficient if I’m not installing a performance tune?
The factory filter will function but may not offer the same contaminant capture, flow margin, or durability under heavy load, high mileage, or towing conditions. The Fleece kit ups the filtration quality and hardware robustness for those scenarios.
Does this kit require any special tuning or modifications?
No additional tuning is required for stock or mild setups. If your truck has been tuned for higher flow, bigger injectors, or modified fuel system components, you should verify fuel pressure and monitor performance after installation.
How often should I replace the filter element in this upgrade kit?
As a general rule, inspect or replace the filter element every 30,000–50,000 miles, or sooner if you have high hours, heavy towing, or dusty conditions. The upgraded media gives you longer service life compared to many stock replacements.
