No other modifications, parts or accessories are required. All this with the highest level of filtration, giving the ultimate protection for the
Using this Catalog K&N High-Flow Air Filters
K&N's drop-in air intake filter is constructed from cotton gauze material between aluminum mesh - this makes for a long lasting, high performance drop-in intake filter. These are very easy to remove and maintain.
K N 33-2231 Replacement Air Filter BMW
WeatherTech SunShade BMW Z4 2003-2012
33-2059 K&N Replacement Air Filter - TPS GARAGE LLC
K&N - 33-2145-1 K&N Replacement Air Filter — LongBoost Performance Parts
33-2059 K&N Replacement Air Filter - TPS GARAGE LLC
Super GT Ltd.
K&N Premium High Performance Replacement Engine Air Filter, Washable, 33-2059 at Tractor Supply Co.
BMW E36 318is M42 1.8L Engine Air Filters - ECS Tuning