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K&N’s 57i Generation II induction kit for 1998–2005 BMW 3‑Series replaces the factory air filter and intake path with a rotationally molded nonmetallic tube and high-flow filter to reduce intake air temperature and airflow restriction. The aerodynamically engineered tube increases air delivery for improved power. Kits are easy to install and include K&N’s No‑Hassle Lifetime Limited Warranty.
K&N 98-05 BMW 3-Series Generation II Induction Kit
