Our intake manifold flanges for the L5P Duramax are CNC machined in house from 6061 aluminum. They are designed to fit a 3” OD tube and are multi axis machined to ensure proper air flow. This flange set is perfect for anyone with aluminum welding skills that wants to build their own custom intake collector/cold side intercooler setup. This flange set is for years 2017 to 2022.
Part # GRD661023
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