K&N Replacement Air Filter (33-2411) Porsche > 991/911 Turbo it replaces the original unit

it replaces the original unit with a pressure/vacuum operated piston valve that still also retains the desirable OEM ECU control over valve actuation

Premium quality performance suspension springs

Braided stainless leader hoses

Engine oil pressure

Ready for water/methanol injection if required

K&N Replacement Air Filter (33-2411) Porsche > 991/911 Turbo it replaces the original unitK&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