K&N Panel Air Filter - 2015-2021 Subaru WRX / 2015-2018 STI / 2009-2014 Forester / 2008-2014 Impreza

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. They make over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. NOTE: Will NOT fit 2018+ STI Type RA or 2019+ STI. This filter does fit 2018+ STI.

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. They make over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple.

Their stock replacement air filters for street vehicles are covered by their famous K&N Million-Mile Limited Warranty™ and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED.

Part 33-2304 Product Specifications

Product Style: Panel Air Filter
Height: 0.938 in (24 mm)
Outside Length: 8.75 in (222 mm)
Outside Width: 8.563 in (217 mm)
Air Filter Shape: Panel
Filter Material: Cotton Gauze
Package Contents: 1 Air Filter
Package Quantity: 1
Filter Re-Oiling Amount: 1.06 oz (31 ml)
Weight: 0.89 lb (0.4 kg)
Product Box Length: 10.44 in (265 mm)
Product Box Width: 1.75 in (44 mm)
Product Box Height: 11.56 in (294 mm)