K&N Replacement Air Filter (33-2442) Ford > Sierra > Cosworth OEM Part Number: 1K0511327AP

OEM Part Number: 1K0511327AP

if the valve is failing to dump it may be necessary to install a weaker spring

Designed to increase horsepower

which makes a remarkable difference especially when changing gears at high RPM

Improve stance and wheel fitment of the Audi R8 with Perfco Performance Premium Wheel Spacers

K&N Replacement Air Filter (33-2442) Ford > Sierra > Cosworth OEM Part Number: 1K0511327APK&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