Features: - CAD-Designed Roto-Molded Intake Tube - One-Piece Sealed Housing - Pro DRY S oil-free 3-Layer Progressively Finer Porosity Synthetic Media for Maximum Convenience - CNC Machined, High Quality Billet Aluminum Fittings - Built-In Sight Window Provides Easy Inspection of Filter Without Disassembly - Unique (Patent Pending) Housing-to-Filter Interface for Easy Installation. A custom CAD designed roto-molded housing made from heat soak resistant material eliminates the use of multiple components. A large, clear sight window is used for easy filter inspection. This system uses a CAD designed, dyno-tuned, roto-molded intake tube to achieve maximum power gains while maintaining a perfect fit. Three CNC machined, high quality billet aluminum fittings are mounted on the tube to provide a perfect connection with the factory vacuum lines. This Pro DRY S air filter has a large 4-1/2" flange and is 8" tall with an inverted top. The Pro DRY S performance air filter features 3-layers of progressively finer mesh synthetic "oil-free" media and is constructed with 100% polyurethane frame for long life and multiple cleaning cycles. CNC machined, high quality billet aluminum fittings and a silicone coupler are used for strength and durability while also providing the most secure installation available. Momentum GT intakes are designed with fewer parts for a quick and simple installation. Note: This intake system is not CARB exempt at this time and is not legal for sale in California or use on vehicles registered with the California Department of Motor Vehicles.