Pay in 4 interest-free payments of $59.12 Learn more
Ships within 48 hours · Estimated delivery Jul 28 - Aug 2
K&N drop-in replacement filters are designed to install easily into your factory air box
to fill the gap
They are made from 3/16th inch steel making the welds stronger and more durable
Optional - SubiSpeed Sidemarkers
The 3-inch mandrel-bent SUS304 stainless construction provides a genuine improvement in exhaust flow over the factory system — this is not a tone-only upgrade
Verus Engineering AOS Kit - 2015-2021 Subaru WRX PDM_fuel-system-kits K&N drop-in replacement filters areUltimately it is designed to perform the crucial task of eliminating oil from the engine's crankcase system. This is to ensure that the oil does not infiltrate the intake system, causing a decrease in octane, which can lead to a series of problems, including carbon build up, power reduction, and internal engine damage. With the aid of coalescent filters, oil vapor with a size as small as 5 microns can be effectively filtered out. Verus Engineering AOS