FASS Drop In Series Fuel System resulting in better performance

resulting in better performance

MAXIMUM PERFORMANCE

which can result in airflow loss

any innovations or improvements developed since the vehicle's manufacture are included in these after market replacement parts

This kit comes with a fully enclosed airbox that protects the filter from dirt and keeps out engine heat

FASS Drop In Series Fuel System resulting in better performance2017 2019 GM Duramax L5P 2500HD 3500HD (Crew Cab, Short Bed) 2017 2024 GM Duramax L5P 2500HD 3500HD (Crew Cab, Long Bed) THIS IS NOT A LIFT PUMP! This is an air separation filtration system that utilizes your factory lift pump. The FASS Drop In Series Diesel Fuel System was engineered by FASS to be the most effective filtration solution for the L5P Duramax. Backed by our limited lifetime warranty, the Drop In Series Fuel System protects your L5P