Wesfil Air Filter WA811 Ultra-Performance Most importantly it�s what�s inside

Most importantly it�s what�s inside and how it�s made that really counts

Oil filters prolong engine life by trapping dirt and other particles throughout your vehicle's service interval

straight and curves vane

The switch is designed to complete the circuit with the application of the brake pedal

Wesfil Air Filter WA811 Ultra-Performance Most importantly it�s what�s insideThe extensive range of Wesfil air filters are a direct result of a wealth of technical and manufacturing expertise. Air filters play a huge role in maximizing engine efficiency and fuel economy. Continual research and development has led to a range of features designed to optimize vehicle performance.