K&N Replacement Air Filter (33-2331)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

OEM Part Number: 18201732926

with a spring that will match the tension of the manufacturer’s original fitment valve

We offer 12 months warranty on all suspension components

reduced wheel hop and a more direct transition of power to the road

PFR5-4609-22

Rectangular options are designed to be cut-down to your own bespoke measurements for custom installations

Unlike other valves on the market

PFF60-8025 is significantly stiffer than the OE mount and recommended for standard or mildly tuned road cars

and tested in

Out of stock - Available to Pre-Order

and influenced from our direct involvement with BTCC and success with the Hyundai i30N

accordingly its available in red