Cobb Tuning SF Intake Replacement Filter - Subaru 02-14 WRX, 04-21 STI and Mazda - 712101EMISSIONS This part is not an emissions related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION The filter element that originally came with your SF Intake is cleanable and can be reused for the life of your car. However, should your filter element become damaged, this is the replacement part. WHY? Filter for all Subaru and MS3 SF Intake 712100,715100,724100,771500 FEATURES Subaru and Mazda SF Intake Replacement Filter SF