Wesfil Air Filter WA5037 Ultra-Select The specialised rotor comes slotted

The specialised rotor comes slotted with a custom 6 slot design offering increased stopping power and resistance to pad glazing

Anti drain-back valve preventing oil draining back out of the filter through the inlet holes

The thermo fan switch responds to changes in engine coolant temperature

the Tridon coolant temperature sensor range has been carefully researched and engineered to operate within original equipment manufacturer's specifications for each specific application

which prevents corrosion for a longer life and provides an easier fit to your vehicle

Wesfil Air Filter WA5037 Ultra-Select The specialised rotor comes slottedThe 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.