# Banks Power 2020 GM 2500/3500 6.6L L5P Boost Tube Upgrade Kit - Red Banks massive 3.5" boost tubes are the largest on the market, flowing 26-45% more air than stock! Smooth mandrel-bent tubes deliver more air to your engine while reducing boost pressure loss resulting in quicker turbo spool and more power. Banks Boost Tubes are the largest charge air cooler pipes in the industry, measuring in at a full 3.5 inches. Every other competitive product on the market tops out at just 3.0 inches, and your factory pipes are only 2.5 inches with crushed bent corners and flimsy plastic components. By contrast, Banks Boost Tubes are made of high-quality aluminized steel for maximum strength and durability. With Banks Boost Tubes' smooth bends, your turbo can spool quicker thanks to improved boost pressure retention for maximum horsepower. The Boost Tubes work with the stock Duramax intake components by using proprietary high-strength 5-ply silicone hoses. Unique to the 2020+ model, a pair of billet aluminum cold-side adapters are also used for the intercooler connection and the throttle body. These are specially made for the airflow requirements of the L5P and feature a Venturi-like taper on their inside diameter to maintain boost pressure and volumetric flow.Key Features: Huge increase in size and flow over stock and competitors (3.5" vs 2.5").Hot Side flows 490 CFM @ 12" vs stock 388 CFM. Cold Side flows 635 CFM @ 12" vs stock 435 CFM. Constant 3.5in diameter tubing for the best flow. Billet venturi couplers maintain boost pressure. Mandrel-bent aluminized steel construction. Allow the turbocharger to spool up faster. Spring-loaded constant tension clamps. Improves airflow by over 26% and 45%. 5-ply heavy-duty Nomex woven silicone couplers. Bung for a temperature probe - 26-45% improvement in Mass Airflow vs Stock. Increases throttle response and reduces turbo lag This Part Fits: Year Make Model Submodel 2020-2026 Chevrolet Silverado 2500 HD Custom 2020-2026 Chevrolet Silverado 2500 HD High Country 2020-2026 Chevrolet Silverado 2500 HD LT 2020-2026 Chevrolet Silverado 2500 HD LTZ 2020-2026 Chevrolet Silverado 2500 HD WT 2024-2026 Chevrolet Silverado 2500 HD ZR2 2020-2026 Chevrolet Silverado 3500 HD High Country 2020-2026 Chevrolet Silverado 3500 HD LT 2020-2026 Chevrolet Silverado 3500 HD LTZ 2020-2026 Chevrolet Silverado 3500 HD WT 2020-2026 GMC Sierra 2500 HD AT4 2024-2026 GMC Sierra 2500 HD AT4X 2020-2021 GMC Sierra 2500 HD Base 2020-2026 GMC Sierra 2500 HD Denali 2024-2026 GMC Sierra 2500 HD Denali Ultimate 2022-2026 GMC Sierra 2500 HD Pro 2020-2026 GMC Sierra 2500 HD SLE 2020-2026 GMC Sierra 2500 HD SLT 2020-2026 GMC Sierra 3500 HD AT4 2020-2021 GMC Sierra 3500 HD Base 2020-2026 GMC Sierra 3500 HD Denali 2024-2026 GMC Sierra 3500 HD Denali Ultimate 2022-2026 GMC Sierra 3500 HD Pro 2020-2026 GMC Sierra 3500 HD SLE 2020-2026 GMC Sierra 3500 HD SLT ## Details - **Price:** 1002.78 CAD - **Vendor:** Banks Power - **Type:** Intercooler Ducting - **Tags:** CARB-EO:D-161-155, ClearanceItem:N, Core:N, CorePrice:0, EPA:Compliant, fits_2020-2026`Chevrolet`Silverado 2500 HD`Custom~2020-2026`Chevrolet`Silverado 2500 HD`High Country~2020-2026`Chevrolet`Silverado 2500 HD`LT~2020-2026`Chevrolet`Silverado 2500 HD`LTZ~2020-2026`Chevrolet`Silverado 2500 HD`WT, fits_2020-2026`GMC`Sierra 2500 HD`AT4~2024-2026`GMC`Sierra 2500 HD`AT4X~2020-2021`GMC`Sierra 2500 HD`Base~2020-2026`GMC`Sierra 2500 HD`Denali~2024-2026`GMC`Sierra 2500 HD`Denali Ultimate~2022-2026`GMC`Sierra 2500 HD`Pro~2020-2026`GMC`Sierra 2500 HD`SLE, fits_2020-2026`GMC`Sierra 2500 HD`SLT~2020-2026`GMC`Sierra 3500 HD`AT4~2020-2021`GMC`Sierra 3500 HD`Base~2020-2026`GMC`Sierra 3500 HD`Denali~2024-2026`GMC`Sierra 3500 HD`Denali Ultimate~2022-2026`GMC`Sierra 3500 HD`Pro~2020-2026`GMC`Sierra 3500 HD`SLE, fits_2020-2026`GMC`Sierra 3500 HD`SLT, fits_2024-2026`Chevrolet`Silverado 2500 HD`ZR2~2020-2026`Chevrolet`Silverado 3500 HD`High Country~2020-2026`Chevrolet`Silverado 3500 HD`LT~2020-2026`Chevrolet`Silverado 3500 HD`LTZ~2020-2026`Chevrolet`Silverado 3500 HD`WT, Forced Induction>Intercooler Ducting, LTL:N, MPN:26005, Non-CARB:N, Prop65:N, SpecialOrder:N, TURN14_ID:480892 ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 1002.78 CAD | In stock | ## Images - Photo - Primary - User 1 - User 2 - User 4 - User 5 - User 6 - User 3 --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/banks-power-2020-gm-2500-3500-6-6l-l5p-boost-tube-upgrade-kit-red) > Updated: 2026-07-18