2020 - 2026 L5P L5D Duramax Max Flow Intercooler VSE 2020+ L5P Max Flow Billet Intercooler Less Restriction. Lower Charge Temps. Better Efficiency. The VSE Max Flow Billet Intercooler isn't just for high-horsepower trucks. It was designed to... MSRP: Was: Now: $2,499.95 Choose Options