Engineered specifically for 2006 through 2007 Chevrolet Silverado 2500HD/3500 and GMC Sierra 2500HD/3500 trucks powered by the 6.6L Duramax V8 turbo diesel engine (LBZ and late LLY codes), the Banks Power Ram-Air Cold Air Intake System (Part # 42142 for Oiled Filter / 42142-D for Dry Filter) is scientifically engineered to eliminate restrictive factory air boxes. Unlike open-element "filter-on-a-stick" kits that ingest hot under-hood air, Banks houses a massive lifetime filter inside a sealed cold-air housing that captures dense, cool ambient air from outside the engine bay.

Designed utilizing rigorous CFD computer simulations, flowbench testing, and dyno validation, the Ram-Air system outflows the stock factory intake by up to 57 percent. A standout engineering feature is Banks' exclusive 5-inch flexible bellows, which accommodates natural engine vibration and twisting movement to prevent component cracking and extend service life. CARB-compliant and backed by a 5-year limited warranty, this kit installs cleanly with zero core charge.

Key Features & Benefits

• Up to 57% Greater Airflow: Outflows both stock factory assemblies and competing aftermarket intakes for optimized turbo spool-up and power delivery.
• Enclosed Cold-Air Housing: Seals tightly against the inner fender to block out power-robbing hot engine bay air and lower exhaust gas temperatures (EGTs).
• Exclusive 5-Inch Bellows: Absorbs engine torque rock and thermal expansion, preventing stress fractures and structural damage to the intake tube.
• Giant Lifetime Filter Options: Available with a multi-layer cotton gauze Oiled Filter (42142) or a high-efficiency Dry Filter (42142-D) that maximizes filtration surface area.
• Reduces Black Smoke & EGTs: Enhances air density to ensure cleaner, more efficient diesel combustion under heavy towing loads.
• Zero Core Charge: Brand-new outright performance upgrade requiring no core deposit or core return shipping.

Technical Specifications

• Manufacturer / Brand: Banks Power
• Manufacturer Part Number / SKU: 42142 (Oiled) / 42142-D (Dry)
• UPC / GTIN: 801279421424
• Product Type: Enclosed Cold-Air Ram Intake System
• Filter Options: Lifetime Oiled Cotton Gauze or Washable Synthetic Dry Media
• Housing Material: Heavy-Duty Rotomolded Polymer Airbox
• Special Features: Integrated 5-Inch Flexible Engine Bellows
• Emissions Status: CARB E.O. Compliant (CARB EO D-161-81 / D-161-118)
• Truck Platform: 2006–2007 GM 2500HD / 3500 Silverado & Sierra
• Engine Platform: 6.6L Duramax V8 Turbo Diesel (LBZ / LLY Codes)
• Core Requirement: None
• Warranty: Banks Power 5-Year Limited Warranty (Lifetime Filter Warranty)

Vehicle Fitment & Technical Installation Notes

• 2006–2007 Chevrolet Silverado 2500HD / 3500 – 6.6L Duramax Diesel (LBZ & LLY)
• 2006–2007 GMC Sierra 2500HD / 3500 – 6.6L Duramax Diesel (LBZ & LLY)
• Fits Model Years: 2006, 2007 (Classic body styles with LBZ/LLY engines)
• Installation Tip: Remove the factory airbox, snorkel, and inlet resonator completely. Install the Banks sealed housing into factory mounting points, secure the 5-inch bellows between the box and intake tube, and tighten all stainless steel worm-gear clamps. Ensure the bellows is properly aligned to absorb engine roll.