The K&N 57i induction kit for BMW Z3 2.0 24V (1999–2000) swaps the restrictive factory air box for a large washable, reusable filter and vehicle-specific adapters to improve airflow and support power through the RPM band. The oversized element captures and holds more dirt for extended service intervals and the kit is backed by K&N's No-Hassle Lifetime Limited Warranty; some states may restrict use under emissions rules.
K&N Performance Intake Kit BMW Z3 2.0 24V 6CYL DOHC, 1999-2000