Banks 42297 Oiled Filter Ram-Air Intake for 2025-2026 Chevy Silverado & GMC Sierra 6.6L Duramax L5P

Brand new for the 2025-26 Duramax L5P platform, the Banks Ram-Air intake is a game-changer. With the 2025 model year Duramax engines, GM added a new sensor into the intake system to monitor Crank Case Ventilation Pressure. To get past this airflow limitation, Banks Power engineered a new patented Air Mass Control Module and a Crankcase Ventilation Control Module that allows the intake to go beyond these limitations for truly unmatched airflow performance.

With a Big-Ass filter, huge induction tube and a unique bellowed silicone coupler to allow for engine movement while tapering down to increase air density, your 6.6L L5P engine will breathe easy and cleanly. Its enclosed housing keeps power-robbing heat away and attaches to the OEM hood and front ram-air scoops for even better performance at speed. An extra side inlet opens up to the wheel well for fresh air and a pleasant induction sound.

Banks 42297 Key Features

• Oiled Red Banks Filter Element
• Increases Mass Air Flow by 45% Over Stock
• Reduces Soot Output, Reducing DPF Regen Frequency
• Large Oversized Tubing with Fewer Bends than Stock Tube
• Increases Power and Fuel Mileage
• 5 Year Limited Manufacturer Warranty
• Connects to OEM Hood and Forward Ram Air Scoops
• Includes Patented Banks Air Mass Control Module

Thanks to a 45% reduction in pressure loss over the stock intake, air mass is increased into the turbo inlet. This denser air makes the turbo's job easier. Turbo lag is reduced and boost comes on sooner, widening the engine's working RPM range. Not only does power come on sooner with the Ram-Air intake, but the turbo spins nearly 3,000 RPM slower increasing its efficiency and longevity. Turbo life is increased because it’s spinning millions of revolutions less over its lifetime.

The ECM (Engine Control Module) in your 2025-26 Duramax monitors air mass and pressure so closely that any deviation from stock results in a check engine light. The truck's ultra-stringent ECM even monitors variations in crankcase ventilation pressure as another trigger for a trouble code. To overcome these new limitations, Banks uses their patented Banks Air Mass Control Module, which corrects for the increase in mass air flow to the turbo's compressor.

The Banks Crankcase Ventilation Control Module is a patented electronic device designed to work with the Banks Air Mass Control Module. Developed in-house and manufactured locally, the Crankcase Ventilation Control Module allows for modifications to the intake system without triggering diagnostic trouble codes like P04DB (Crankcase Vent System Disconnected) or related check engine lights and reduced engine power modes that plague other aftermarket intakes systems.

The Ram-Air intake system for the 2025-26 Duramax 6.6L widens the powerband, sharpens turbo response, and improves fuel economy by improving air mass flow to the turbo. This is made possible by the included patented Banks Air Mass Control Module and Crankcase Ventilation Control Modules. Meanwhile, all competitors must retain near stock airflow or risk setting a check engine light. The Banks Super-Tube fits perfectly over the top of the filter which has an integrated collar to smoothly transition airflow from the air box and into the turbo with the lowest resistance and drag. Banks massive filter has an optimized ratio of filter surface area, pleat count, and media thickness allowing it to outflow every other filter tested while breathing evenly from all sides.