Front Cooling Guide - Airtec - GR Yaris & GR CorollaAirtec Motorsport Front Cooling Guide for GR Yaris & GR Corolla The Airtec Motorsport cooling guide works by directing fast flowing air passing underneath the car towards the gearbox and transfer box casings. By providing a sustained flow of fresh air to towards these items, their ability to withstand heat soak is increased, which therefore allows them to better control operating temperatures in comparison to standard. Available in a high quality and