Wesfil Air Filter WA489 Ultra-Rotor By-pass valve ensures protection of

By-pass valve ensures protection of the engine against oil starvation

and reduce engine wear

The thermo fan switch is designed to control operation of the electric thermo fan(s)

They are electronic devices used to indicate how much material is left before disc pad replacement is required

Wesfil Air Filter WA489 Ultra-Rotor By-pass valve ensures protection ofThe 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.