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The FASS Drop-In Series Diesel Fuel System (DIFSL5P2001) offers an effective filtration solution for 2020-2024 GM Duramax L5P trucks, protecting your engine from fuel contamination.
This plug-and-play filtration system is engineered to be a direct replacement for the factory water separator, utilizing the OEM in-tank fuel pump for fuel flow. Please note that installation on cab and chassis models might require some modifications. This system is a filtration upgrade and is not compatible with FASS Fuel Sump Kits. No additional parts are needed for installation. It's also important to verify adequate mounting space if you have an aftermarket fuel tank with a larger capacity than stock.
The FASS Drop-In Series is designed to provide significant benefits for your L5P Duramax:
The Drop-In Series delivers the same level of filtration found in FASS's higher-tier systems in an easy-to-install package. Backed by a limited lifetime warranty, this system is a smart investment for the longevity and performance of your L5P Duramax.
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