Unique One-Piece Housing w/ Sight Window: The smooth one-piece sealed housing with auxiliary air scoop is used to eliminate the use of multiple-piece housings and ensure the coolest air intake charge available. A large, clear sight window is used for a hassle-free filter inspection and an aggressive style. (Housing-to-Filter Interface US PAT 9440175) Huge 5-Layer Performance Air Filter: The Momentum GT is designed around a pre-oiled, large 8" tall 360 degree radial flow performance air filter with 5-layers of progressive finer mesh cotton media providing maximum airflow and performance. The unique air filter to housing interface allows for maximum filter size which increases the available air volume while simplifying the installation process. Premium Hardware: Premium stainless steel T-bolt clamps and a silicone hump 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.