K&N Drop-In Filter WRX / STI (2002-2007) MINI Cooper Drop rates may slightly vary

Drop rates may slightly vary depending on transmission type and fuel level

5L oil pan

T-6 aluminum alloy intake is finished off with an Injen performance dry air filter with built-in velocity stack

Quick and simple upgrade

3 35mm Offset with a 73mm Bore

K&N Drop-In Filter WRX / STI (2002-2007) MINI Cooper Drop rates may slightly varyK&N's replacement air filters for the Subaru WRX STI are designed to increase horsepower and acceleration while providing excellent filtration. K&N filters are custom designed to fit into your existing factory air box for simple, fast installation. K&N stock replacement air filters for street vehicles are covered by a Million Mile Limited Warranty. K&N Filters use oil to provide filtration, and can be washed and recharged using the K&N cleaning kit