Highline Tuning's Cold Air Intake upgrade for the 2001-2006 BMW M3 features a host of improvements over the stock airbox. A fully enclosed airbox with high flow filter and OEM like fit and finish. All resulting in increased horsepower and torque.
The filter is washable and can be reused.
Gently agitate and wash with a mild soap and rinse with water. Wait till filter is completely dry before reinstalling.
Unlike some aftermarket intakes the Highline Tuning E46 M3 intake reuses the stock air screen which prevents the occurrence of a check engine light.