Wesfil Air Filter WA5377 partspal either paper or rubber 'O'

either paper or rubber 'O' rings (sealing rings)

created by heating the pads to a high temperature at the factory to remove remaining gases and resins

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

The ceramic formulation is stable even at very high temperatures and creates less dust

Wesfil Air Filter WA5377 partspal either paper or rubber 'O'The 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.