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Having an effective cold air feed to the filter is an essential part of our design
It happens more than most people realise
By the replacement of the paper filter with a BMC Air Filter FB468/20
naturally aspirated or turbocharged
therefore improving response
K&N Performance Panel Filter BMW E36/E46 M3 981 GT4 Having an effective cold airK&N performance drop in panel filter for the E36 M3 and E46 M3, as well as other 3 Series models (use part number link below to check). This filter is a direct replacement for the original paper filter and offers superior filtration and improved performance. It is also cleanable and so never needs replacing. Replaces BMW part number 13721730449.