K&N Air Filter Sierra and Sapphire Cosworth 2WD 4x4 GGR558

K&N replacement panel air filter for original Ford Sierra Cosworth air box.

Fits Sierra RS Cosworth  3 door, Sierra RS500 Cosworth, Sapphire RS Cosworth 2WD 4 door, Sapphire RS Cosworth 4WD. For Sierra Cosworth YB red and green top engines.

The K&N FilterCharger^® air filter is designed to achieve high, virtually unrestricted air flow while maintaining filtration levels critical to ensure long engine life.  K&N air filters generally add 1-4 horsepower.

The secret to their success lies in the unique characteristics of the filter medium that was originally developed by K&N all those years ago in the dust, sweat and tears of desert motocross racing.  We just wanted to win races and stumbled on a cotton filtration technology destined to be great. 

 The high flow cotton gauze air filter is washable, reusable and built to last for the life of an automotive or motorcycle engine.  K&N air filters consist of four to six sheets of cotton gauze layered between two sheets of aluminum wire mesh.  This media is then pleated and oiled to enhance its filtering capabilities and overall performance. 

K&N Air Filters were created for an environment requiring maximum horsepower and enhanced acceleration in addition to protection from the dirt and dust of off-road racing.  The result is an air filter that allows dramatically more air into an engine, is washable and reusable, and will protect your engine for the life of your vehicle. 

Sierra Cosworth K&N Filters, Tuning and Performance Parts Specialists Graham Goode Racing
Lutterworth Road Aylestone Leicester LE2 8PH Tel 0116 2440080