K&N Replacement Air Filter (33-2216) Audi A3 MK1 This air filter reduces restriction

This air filter reduces restriction allowing the engine to breathe more efficiently

K&N rubber hose couplers are designed to connect intake tubes for custom do-it-yourself racing air intake applications or used as a replacement part

You will then have a vacuum / boost connection suitable for 4mm tube or similar that can be used to install a boost gauge

Original Bore: 65

K&N Replacement Air Filter (33-2216) Audi A3 MK1 This air filter reduces restrictionK&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