BMW E81 E82 E87 E88 E90 E91 E92 E93 E84 K&N E-2021 Air Filter

K&N E-2021 washable cotton gauze air filter for BMWs with the listed chassis codes. Fits E81, E82, E87, E88, E90, E91, E92, E93 and E84 models - including 116i, 118i, 120i, 316i, 318i, 320i, 320si, 320i xDrive, X1 18i and X1 20i.

Direct-fit, no modification needed. Designed for fast-road and track-day use where consistent airflow matters. Reusable for up to 100,000 miles with proper cleaning - no disposable filter tax.

• Drop-in replacement for stock airbox
• Improved throttle response over paper filters
• Tested before dispatch - if your chassis is listed, it fits