BMC Air Filter BMW M3 E92 E90 E93

BMC air filters replace standard filters in the stock airbox, without any modification.

As high-performance models, they allow greater airflow and thus help improve your engine's efficiency through better combustion.

BMC air filters are made from multi-layer cotton gauze impregnated with low-viscosity oil and held between two epoxy-coated aluminium meshes to prevent oxidation. Dust and other particles are captured and trapped by the cotton fibres.

Tristan's take: "A simple, washable air filter. A bit more sound and a few extra ponies, what more could you ask for".