Banks Boost Tube Upgrade Kit - GM Duramax 6.6L L5P (2020-2026)

The Banks Boost Tube Upgrade Kit replaces the stock charge-air tubes on the 2020-2026 GM Duramax 6.6L L5P with 3.5" mandrel-bent tubes that flow 26-45% more air than stock. The larger, smoother tubes deliver more air to the engine while reducing boost pressure loss, supporting quicker turbo spool and more power.

Key features

• 3.5" tubes versus 2.5" stock for increased size and flow
• Hot side flows 490 CFM @ 12" versus 388 CFM stock
• Cold side flows 635 CFM @ 12" versus 435 CFM stock
• Improves airflow by over 26% (hot side) and 45% (cold side)
• Constant 3.5 in diameter tubing for unrestricted flow
• Billet aluminum venturi couplers maintain boost pressure and resist breakage
• Mandrel-bent aluminized steel construction
• 5-ply heavy-duty Nomex woven silicone couplers
• Spring-loaded constant-tension clamps
• Bung for a temperature probe

Fitment

Fits 2020-2026 Chevrolet Silverado 2500/3500 and GMC Sierra 2500 HD/3500 HD with the 6.6L L5P Duramax diesel. CARB E.O. not required.

Installation

Installation manual and video from Banks.

Banks part 26005.