Description

Fits

Year	Make	Model	Engine
2017-2019	Chevrolet/GMC	2500/3500	6.6L L5P Duramax

Unlock more power with Banks’ massive 3.5" Boost Tubes—built to flow 87% more air than stock and outsize the competition. Made from durable aluminized steel with smooth mandrel bends, these tubes improve boost pressure, deliver quicker turbo spool, and maximize horsepower. Say goodbye to restrictive 2.5" factory pipes and weak plastic—Banks Boost Tubes are engineered for serious performance. 

Part Number: 25999

Features

• Improves airflow by 87% over stock
• Flows 680 CFM vs 364 CFM stock
• 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
• 5-ply heavy-duty silicone couplers
• Greater cooling capacity