Unique One-Piece High Quality Housing: A custom CAD designed roto-molded housing made from heat soak resistant material eliminates the use of multiple components and ensures the coolest air intake charge available. The roto-molded housing is made out of black cross-linked polyethylene. A urethane plug is also included if you wish to completely seal the air box. High Quality Tube: This system uses a high quality plastic CAD designed, dyno-tuned, roto-molded intake tube to achieve maximum power gains while maintaining a perfect fit. Large 3-Layer Performance Air Filter: This Momentum GT intake system was designed around the largest filter possible to allow maximum performance and filtration. This cylindrical filter has a large oval (6-3/4" x 4-3/4") flange and is 9" tall inverted top Pro DRY S filter media. The Pro DRY S performance air filter features 3-layers of progressive finer porosity synthetic media providing maximum convenience with 100% polyurethane frame for long life and multiple cleaning cycles. Premium Hardware: Premium stainless steel clamps and a silicone coupling 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 Momentum GT Cold Air Intake System w/ Pro DRY S Media BMW 116i/118i (F20/21) 11-15 I4-1.6L (t) N13 BMW 116i/118i (F20/21) 11-15 I4-1.6L (t) N13