Banks Power
Boost Tube Upgrade Kit Fits 20-26 Chevy/GMC 2500/3500 6.6L Duramax, L5P Red Powdercoat Banks Power
SKU: B003 26005
Description
Part #: 26005
Banks massive 3.5 inch boost tubes are the largest on the market, flowing 26-45 percent 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 inch vs 2.5 inch)Hot Side flows 490 CFM at 12 inch vs stock 388 CFMCold Side flows 635 CFM at 12 inch vs stock 435 CFMConstant 3.5in diameter tubing for the best flowBillet venturi couplers maintain boost pressureMandrel-bent aluminized steel constructionAllow the turbocharger to spool up fasterSpring-loaded constant tension clampsImproves airflow by over 26 percent and 45 percent5-ply heavy-duty silicone couplersBung for a temperature probe
Features:
- 26-45% improvement in Mass Airflow vs Stock. Increases throttle response and reduces turbo lag
Boost Tube Upgrade Kit Red powder-coated (Set) for 2020-2026 Chevy/GMC 2500/3500 6.6L Duramax, L5P
Fitment
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Specifications
| Brand | Banks Power |
| Part Number | B003 26005 |
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Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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