Manifold made of Zytel

The single piece active air intake manifold moulded of DuPont Zytel nylon in the 2.4 and 2.8l V6 motors in the Audi A6 weighs only 4.5kg – about half the weight of an aluminium part. The manifold is produced using the lost-core process, using a modified Zytel nylon 66 reinforced with 35% glass fibre.