do88 Intake system Replacement Air Filter, BMW M140i M240i 340i 440i F3X

Replacement Cotton Air Filter for the do88 Intake System. Since this air filter is a high-performance part, regular filter maintenance or replacement is important to maintain proper air filtration. We recommend cleaning the air filter every 10.000 km, please use cleaning product designed for cotton air filters. 

The filter is delivered without any filter oil applied therefore we recommend that the air filter is applied with cotton filter oil to increase air filtration if you drive your car in any dusty environments.