Maximize airflow and boost efficiency on your L5P Duramax. This Boost Tube Upgrade Kit features full 3.5″ constant-diameter mandrel-bent steel tubing, replacing the restrictive factory charge-air-cooler piping to deliver faster turbo spool, improved boost retention, and uncompromising durability.

Key Features:

• 3.5″ constant-diameter tubing – Significantly larger than factory pipes for superior flow.
• Mandrel-bent aluminized steel construction – Engineered for extreme boost levels and high thermal loads.
• Billet venturi couplers & heavy-duty silicone couplers with constant tension clamps – Ensure secure, leak-resistant connections under pressure and heat.
• Direct-fit for 2017-2019 6.6L Duramax (L5P) – Designed to integrate with OEM intercooler and intake components for a straightforward installation.

Benefits:

• Flows up to ~87% more than stock, delivering up to 680 CFM vs ~364 CFM for the factory piping.
• Reduces boost pressure drop from the turbo to the intake manifold, helping your turbo spool quicker and your engine run more efficiently.
• Replaces weak or restrictive factory tubes with a robust, performance-oriented steel solution built to last under heavy duty or tuned conditions.
• Ideal for performance-tuned trucks, heavy towing duty, or any driver demanding better airflow and throttle response from their Duramax.

Specifications:

• Fits: 2017-2019 Chevrolet Silverado / GMC Sierra 2500 / 3500 with 6.6L Duramax (L5P)
• Tubing Diameter: 3.5″ constant
• Material: Mandrel-bent aluminized steel with heavy-duty silicone couplers
• Finish: Powder-coat (red) or protective coating depending on variant
• Installation Time: Approx. 4 hours
• SKU: 25999

Engineered by Banks Power to deliver unrivaled flow and strength, this kit gives your L5P Duramax the boost path upgrade it deserves. Whether you're towing heavy loads, tuning your truck, or simply want heightened responsiveness, this boost tube kit is a crucial component.

Note: Always verify fitment for your exact vehicle model, year, engine (6.6L L5P), and factory piping before purchase.