2020-2025 Duramax Boost Tube Upgrade Kit (26005)

Fits

Banks’ huge 3.5" boost tubes are the biggest available, moving 26-45% more air than the original parts. Their smooth mandrel bends improve airflow to your engine and cut down boost pressure loss, helping your turbo spool faster and boosting power.

Part Number: 26005

• 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 3.5in diameter tubing for the best flow
• Billet venturi couplers maintain boost pressure
• Mandrel-bent aluminized steel construction
• Allow the turbocharger to spool up faster
• Spring-loaded constant tension clamps
• Improves airflow by over 26% and 45%
• 5-ply heavy-duty silicone couplers
• Bung for a temperature probe
  

Installation