Inlet Manifold - Cast Aluminium - Airtec - GR Yaris Gen1 & GR CorollaAirtec Motorsport Cast Alloy Inlet Manifold for GR Yaris Gen1 & GR Corolla Airtec's cast aluminium intake manifold has been designed to be both strongand freer flowing design measured an improvement in flow of 36% in comparison to the original. More equal balance across the cylinders, which is crucial for safe and efficient fuelling as well as consistent power and torque. A true direct replacement by utilising all the original fixtures and fittings,