K&N Replacement Air Filter (33-2442) Ford > Sierra > Cosworth Yellowstuff Fastest Street

Yellowstuff Fastest Street

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

Powerflex offer improved reliability over original parts and of course carry our Lifetime Warranty

⭐­ A very tidy bit of work and perfect fit ⭐­

OEM Part Number: 1K0511327AP

K&N Replacement Air Filter (33-2442) Ford > Sierra > Cosworth Yellowstuff Fastest StreetK&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