BMW E36 E39 E38 E83 E85 Z3 Z4 X3 2.5i K&N 33-2070 Air Filter

Direct-fit, washable K&N panel filter for BMWs with the 2.5i engine - including E36, E39, E38, E83, E85, Z3, Z4 and X3 models (1990-2006). Drops straight into the factory airbox, no mods required.

Designed for fast-road use and track-day prep - not a gimmick, just better airflow and long-term reusability. Clean and re-oil as needed; no replacement filters to buy every 12 months.

• Exact fit for 2.5i petrol engines only - not for diesel or other displacements
• K&N 33-2070: factory-documented, flow-validated, UK-stocked
• No compromise on filtration - high-flow doesn’t mean low-protection
• Ideal for stage 1 or daily-driver upgrades where OEM restriction holds you back