This Integrated Engineering SAI filter kit adds a small inline filter to your factory secondary air injection (SAI) hose, protecting it once you remove the stock airbox for an aftermarket cold air intake. It's the same filter IE includes with its cold air intake kits that have the SAI option, sold separately for anyone who already has the hose exposed.Features Secures a filter onto the factory SAI hose Works with any aftermarket intake No permanent modification - the car can go back to a stock intake at any time Compact enough to tuck out of sight for a clean engine bay What's Included Heat shield mount bracket (x1) 1" SAI breather filter and clamp (x1) Billet SAI-to-filter hose adapter (x2) Installation NotesInstall only needs a Phillips or flathead screwdriver. Final orientation depends on your specific intake, so IE's install guide is meant as a general outline rather than a step-by-step for every application.Product Specifications SKU: I00W IEINCU1A MPN: IEINCU1A Fits most VW/Audi factory SAI hoses Frequently Asked QuestionsDo I need this if I already have an IE cold air intake with the SAI option?No, it's already included with those kits. This is for anyone adding a filter to an exposed SAI hose separately.Is installation permanent?No, it doesn't modify the vehicle and can be removed if you go back to the stock airbox.