K&N Universal Air Filter Chrome Round Tapered Red - 4in Flange ID x 1.125in Flange Length x 5.5in H Stage 2 590 Head Diameter Pro Flo

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Manley 98+ Subaru WRX (EJ205) 75mm STD Stroke 92

this system provides a hassle free installation

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304in CD -18cc Dish Platinum Series Pistons - E/D

K&N Universal Air Filter Chrome Round Tapered Red - 4in Flange ID x 1.125in Flange Length x 5.5in H Stage 2 590 Head Diameter Pro FloK&N adjustable fitting Universal Air Filters are made with flange inserts which adjust the filter's flange to one of three inside flange diameters. The flange on these filters is made with ultra strong molded pliable rubber which absorbs vibration and allows for secure attachment. K&N clamp on universal air filters are washable and reusable.