K&N X-Stream Top Assembly 5.125in Flange ID / 14inx3.75in H / 1.25in Drop B Interior Accessories>Door Panels DBA 07-14 Subaru WRX En-Shield

DBA 07-14 Subaru WRX En-Shield Standard Rear Brake Rotor

Haltech Flex Fuel Fittings 3/8 (GM Spring Lock) to -6AN Male (Incl Two Fittings)

extremely rugged STACK stepper-motor movement

OEM 39mm Body

Using AutoMeter

K&N X-Stream Top Assembly 5.125in Flange ID / 14inx3.75in H / 1.25in Drop B Interior Accessories>Door Panels DBA 07-14 Subaru WRX En-ShieldNot only does the K&N XStream add filter area, it actually redirects airflow inside the filter to pull in more air through the side pleats for even greater performance efficiency. Cleanable and reusable, the XStream Air Flow Top filter delivers the best protection available for your engine.