Scope of delivery: - 1.8T cast turbo manifold upgrade slottedTechnical specifications: - Cast turbo manifold - K03 flange - Larger pipe diameter ø 40mm up to 10% more power - Slotted cylinder head flange to prevent heat cracks - Longer bolts must be used see here http://www.turbo-parts.de/product_info.php?info=p1574_Schrauben-fuer-K03-Kruemmer-hochfest-12-9-3-Stueck.html - Nuts with 12mm wrench size (SW) must be used, as space can be tight in some places during installation.Description: Our cast manifolds are manufactured in a metal mold from high-quality cast and then CNC-machined, which results in high fitting accuracy. Unlike tubular manifolds, this one is more durable. All OEM turbos for the vehicle fit the manifold. Simply replace the old manifold with the new one.Fits: - All VAG 1.8T engines mounted transversely - Turbocharger K03, K04-001Optional matching accessories: - 3 high-strength bolts - Manifold gasket for the turbo - Gasket for the cylinder head