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Boost Tube Upgrade Kit

Buy Now For $598.00

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Boost Tube Upgrade Kit

Buy Now For $598.00

Add To Cart
Floating assembled photo of the Banks Boost-Tubes for the 2017-19 L5P Duramax
Boost-Tube components laid out
Comparison of the hot-side boost tube for the 2017-2019 L5P Duramax
Comparison of the cold-side boost tube for the 2017-2019 L5P Duramax
Detail photo of the lower billet adapter used on the cold-side Boost-Tube
Photo of the 2017-2019 Boost Tubes Installed.

Boost Tube Upgrade Kit

Up to 87% less restrictive vs stock
Flows 680 CFM vs 364 CFM stock
Red powder-coated (Set)
For 2017-2019 Chevy/GMC 2500/3500 6.6L Duramax, L5P
Prices increase in June
MSRP $664.44


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Banks Power Ram-Air intake for 2017-2019 Chevy/GMC 2500/3500 6.6L Duramax L5P 42249
Banks Ram-Air®
(Oiled Filter)
Add an additional +20 hp to your 2017-2019 Duramax
2017-2024 L5P TMAP Spacer Hero 64410
MAP Sensor Spacer Kit
Protects sensor from soot buildup
Banks Power Monster Exhaust for 2017-2019 Duramax L5P
Monster Exhaust System
(Chrome Tip)
85% less backpressure, 15% lower exhaust exit temp
Free Shipping on orders over $250 (48 Contiguous US)*

Banks massive 3.5in boost tubes are the largest charge air cooler pipes on the market, flowing 680 CFM and 87% 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.

49 State Compliant

California Compliance in Progress

Key Features

  • Huge increase in size and flow over stock and competitors (3.5" vs 2.5")
  • Billet venturi couplers maintain boost pressure
  • Mandrel-bent aluminized steel construction
  • Constant diameter tubing for the best flow
  • Allow the turbocharger to spool up faster
  • Spring-loaded constant tension clamps
  • Improves airflow by 87% over stock
  • Flows 680 CFM vs 364 CFM stock
  • 5-ply heavy-duty silicone couplers
  • Greater cooling capacity


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 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.

Questions? Contact Support


Banks oversized charge air cooler pipes and a unique billet intercooler adapter results in less boost pressure loss from turbo to intake manifold.
With an 87% improvement in airflow, your turbo can spool faster and sustain boost pressure with less wasted energy and heat.
Banks Boost-Tubes allow your engine, and specifically your turbo, to work less hard in compressing intake air; this maximizes horsepower delivery while reducing engine stress.
Banks Power, Boost-Tube, Flow Chart Results, Banks Power Boost Tubes, Boost Tubes for L5P Duramx


At Banks Power, our goal has always been to out-perform stock, our competitors, and even ourselves.
Fitting a full 3.5" charge air cooler pipe through the existing engine bay compartment of your L5P was no easy task, but we did it.
Put side by side with the factory piping, ours could practically eat the stock one whole, all while smoothing out tight bends and improving outflow.
Banks Power, Boost Tubes, Charge Air Cooler, Comparison vs stock


One of the keys to our high performance comes in our unique cold side billet intercooler coupler.
Our engineers used CFD simulations to design the perfect taper to maximize airflow and reduce restriction and drag at the connection point.
The shape and curvature of this coupler is critical to maintaining the pressure efficiency throughout the intercooler system.
Billet Charge Air Cooler Coupler


Whether you are looking at the cheap OEM plastic intercooler return pipe that's prone to cracking and failure, or the undersized alternatives from the other guys, there really is no comparison.
For peak performance, durability, and reliability, you either go Banks, or you don't go at all. Upgrade to full 3.5 inch charge air cooler pipes for your L5P, with Banks Boost Tubes.
Banks Power, Boost Tubes, Intercooler Pipes, Charge Air Cooler, Banks vs Stock