Banks Power Boost Tubes 3.5" Largest Charge Air Cooler Pipes

Banks Power Boost Tubes — 3.5" Largest Charge Air Cooler Pipes Upgrade airflow, reduce boost loss, and unlock quicker turbo spool with the industry’s largest charge air cooler pipes. Banks Power Boost Tubes measure a full 3.5" diameter, outperforming stock 2.5" pipes and competitor 3.0" designs for significant airflow and power gains. Why Upgrade? Massive flow gains: Hot side flows 490 CFM @12" vs stock 388 CFM; cold side flows 635 CFM @12" vs stock 435 CFM. Improved turbo response: Smooth mandrel-bent tubes and constant 3.5" diameter reduce boost pressure loss so the turbo spools faster. Durable construction: Mandrel-bent aluminized steel resists fatigue and heat better than crushed factory corners and plastic parts. Key Features Largest 3.5" constant-diameter tubing in the industry Flows 26–45% more air than stock depending on side Billet venturi couplers to maintain boost pressure and volumetric flow 5-ply heavy-duty silicone couplers with spring-loaded constant-tension clamps Mandrel-bent aluminized steel construction for strength and longevity Bung for an optional temperature probe Includes billet cold-side adapters for 2020+ L5P models to match throttle body and intercooler requirements Perfect for Duramax L5P owners and performance builders who want maximum airflow, quicker spool, and reliable construction. Banks Boost Tubes are engineered to work with stock intake components while delivering measurable power and response improvements.