We are so pleased with the casting quality of our K03 manifold, that we have split a manifold in half to show the accuracy of the mould, to our CAD model. From the pictures you can see that:- Internal runners are smooth and even. The manifold has a minimum wall thickness of 3mm. Shows the quality of the mould. The casting is free from imperfections such as bubbling. The manifold is on sale now and can bought by clicking here Cast K03 Manifold During the extensive design, development and testing of our New Cast K03 Upgrade Manifold, we have received an overwhelming response from the VAG tuning market worldwide.