K&N 97-99 BMW 540I Drop In Air Filter 2015-bmw-m235i-esi8311981 These products deliver unquestioned fuel

These products deliver unquestioned fuel flow across a wide pressure range to support outrageous horsepower

58mm Spring Rate 18kg/mm (Pair)

This results in improved sway bar effectiveness whilst preventing fouling of the sway bar on near by chassis and steering components

Control the boost from the driver's seat

K&N 97-99 BMW 540I Drop In Air Filter 2015-bmw-m235i-esi8311981 These products deliver unquestioned fuelK&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 10 Year Million Mile Limited Warranty. K&N drop in replacement filters are designed to install easily into your