K&N Replacement Air Filter (33-2442) Ford > Sierra > Cosworth Powerflex offer improved reliability over

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

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

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The Splitter is a truly remarkable valve that gives a combination of blow off and recirculation valve operation

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 Powerflex offer improved reliability overK&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