K&N Cone Filter 5in ID 6.5in Base 4.5in Top 5.625in Height Carbon Fiber vendor_AEM Induction These are standard-size 35mm intake

These are standard-size 35mm intake valves

but not required

* on most applications

NOTE: It is recommended upgrading the valve springs with these camshafts

Deatschwerks Subaru WRX and STI top-feed & side-feed fuel injectors are engineered to fit your OEM harness

K&N Cone Filter 5in ID 6.5in Base 4.5in Top 5.625in Height Carbon Fiber vendor_AEM Induction These are standard-size 35mm intakePart #: RP 5113 K&N Cone Filter 5in ID 6. 5in base 4. 5in top 5. 625in height carbon fiber look This item is non application specific. Please verify compatibility before purchase. May require some modification for proper installation.