K&N 57i Generation II Induction Kits are built primarily for European vehicles. They come with K&N's Million Mile Limited Warranty™. These intake kits use only non-metallic rotationally molded tubes that can reduce air temperature and decrease intake sound over a metal tube. Restriction can exist BETWEEN an air filter and the engine reducing the benefit of a K&N Air Filter alone. The weakest link in the airflow chain robs a vehicle of its natural horsepower. Often that weak point is the factory air path leading to the engine. K&N Air Intake Kits virtually eliminate air path restriction by replacing the air filter and the entire air path to the engine. The aerodynamically engineered tube drives a massive amount of air into an engine, which translates into POWER. Specification:Estimated Horsepower Gain*: 11 HP @ 4200 RPMReplacement Filter: RU-2815Air Filter Color: RedAir Filter Material: Cotton GauzeAir Filter Outlet Shape: RoundClamps Included: 3Clamp Material: Stainless SteelClamp Style: RegularCouplers Included: 1Type: Gen IIProduct Style: 57i Series International KitsIntake Pipe Color / Finish: BlackIntake Pipe Material: High-Density Cross-Linked PolyethyleneStreet Legal In All US States: NoTUV Approved (Europe): NoWeight: 10.1 lb (4.6 kg)Product Box Height: 14.5 in (368 mm)Product Box Length: 24.1 in (612 mm)Product Box Width: 15.5 in (394 mm)California Restricted: Not legal for sale or use in CaliforniaMounting Hardware Included: Yes*Horsepower gains based on similar vehicle dynamometer test. Results will vary.