2020-2026 Duramax L5P Banks Boost Tube Upgrade Kit (26005)
Banks 3.5" boost tubes are the largest charge air cooler pipes in the industry, flowing 26-45% more air than the factory parts. Smooth mandrel bends deliver more air to the engine while cutting boost pressure loss, so the turbo spools faster and makes more power. Built from aluminized steel with 5-ply silicone hoses and a pair of billet aluminum cold side adapters, they will not flex, crack, or dry out the way the OEM charge air pipes do.
- 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 3.5" diameter tubing for the best flow
- Billet aluminum venturi couplers maintain boost pressure and do not break like stock
- Mandrel-bent aluminized steel construction
- Allows the turbocharger to spool up faster
- Spring-loaded constant tension clamps
- Improves airflow by 26% to 45%
- 5-ply heavy-duty Nomex woven silicone couplers
- Bung for a temperature probe
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