BMW 135i N54 E81/E82/E87/E88 (2007-2010) K&N Washable Air Filter

Direct-fit K&N panel filter for the BMW 135i N54 - engineered specifically for the E81, E82, E87 and E88 chassis (2007-2010). No modifications, no remap, no airbox trimming.

• Washable and reusable for life - clean every ~50,000 miles
• Drop-in replacement for the OEM airbox; installs in under 10 minutes
• Optimised for the N54 twin-turbo 3.0L - sharper throttle response, consistent airflow
• No impact on factory sensors or warranty compliance