K&N 57i Generation II Induction Kits are built primarily for European vehicles. They come with K&N's No-Hassle Lifetime 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.. K&N's easy to install air intake systems replace the restrictive factory air filter and air intake housing allowing for virtually unrestricted air flow. K&N air intakes come with K&N's No-Hassle Lifetime Limited Warranty.. Associated products: RF-1023DK Air Filter Wrap, RU-4550 Universal Clamp-On Air Filter, 99-5000 Filter Care Service Kit Aerosol. K&N 98-05 BMW 3-Series Generation II Induction Kit. Easy to install, usually in 60 minutes or less. Engine Cold Air Intake Performance Kit. Performance Air Intake System. Air Intake System

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