This component allows you to securely mount an aftermarket cone filter to the stock Subaru mass airflow meter (MAF). This allows removal of the stock airbox, eliminating the inherent flow restrictions. Filter and attachment hardware are not included, and must be purchased elsewhere. A filter with a mounting inside diameter of 3" (76mm) is required. A 2" (50mm) extension is provided on the mount, which can be cut to length if necessary. This component is manufactured in the USA of 6061 aluminum. Available in bare finish only. Will not fit 2002 WRX as the airbox and MAF are integral.