Banks Power 3.5" Red Boost Tube Upgrade Kit for 2020-2026 Chevrolet/GMC 2500/3500 (6.6L) - 26005

Fits 2020-2026 Chevrolet Silverado and GMC Sierra 2500 HD / 3500 HD (6.6L). This Banks Power Boost Tube Upgrade Kit replaces the restrictive, crushed factory 2.5-inch piping with constant-diameter 3.5-inch mandrel-bent aluminized steel tubing. By eliminating the flimsy plastic components and narrow bends found in the OE setup, this kit significantly reduces boost pressure loss and allows the turbocharger to spool faster for improved throttle response.

Specifically engineered for the L5P Duramax, this kit includes billet aluminum cold-side adapters for the intercooler and throttle body. These adapters feature a proprietary Venturi-like internal taper to maintain volumetric flow and boost pressure. The system is secured with heavy-duty 5-ply Nomex woven silicone couplers and spring-loaded constant tension clamps to prevent leaks under high-boost conditions.

• Manufacturer Part Number: 26005
• Tubing: 3.5-inch mandrel-bent aluminized steel
• Airflow: Improves mass airflow by 26-45% over stock
• Hot Side Flow: 490 CFM at 12" H2O (Stock: 388 CFM)
• Cold Side Flow: 635 CFM at 12" H2O (Stock: 435 CFM)
• Couplers: 5-ply heavy-duty Nomex woven silicone
• Includes billet aluminum Venturi-style adapters
• Integrated bung for temperature probe
• High-temp red powder coat finish