K&N Replacement Air Filter (33-2343) Audi A1 or a recirculating valve -

or a recirculating valve - you choose

A simple solution for fitting a boost gauge or vacuum operated valve without having to cut into any original equipment

giving you the subtlety yet reliability of a Forge valve

This bush is designed to fit the 66mm aluminium bush

each one produced in aerospace grade type 304

K&N Replacement Air Filter (33-2343) Audi A1 or a recirculating valve -K&N washable, reusable High Flow Air Filters feature a state of the art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's No Hassle Lifetime Limited Warranty. K&N drop in replacement filters are designed to install easily into your