K03 OEM Header to K04 MZR 2.3 MazdaSpeed 3 6 Turbo Fit Passat Audi 1.8T VW A4 A6

Welcome to Custom Fab Shop All our products are CNC milled using the latest CAD/CAM programs which are built in house on 3 and 4 axis high precision machinery. We offer the billet flanges in custom thickness and even custom application transitions for easier fab work or building your own DIY kits. We guarantee our products and service if you are not satisfied return the product and receive the purchase price refund. We machine out adapters and flanges with the industry standards by using USA certified materials to resist warping and provides excellent weldabilty. We even go the extra distance to sand down the machine waves using a hatch cross pattern to improve sealing. Feel free to contact us we have overhundredsof flanges in our system for adapting to most applications plusno setup charge... Part Specification: Material: 1018 CR Mild Steel USA (NOT CAST) Thickness: 1/2 inch (.500″) or (12.7mm) K03 Bolt Diameter: M10 x 1.50mm Threaded (Studs not Included) K03 Bolt Spacing: Unequal 3 Bolt Spacing K03 Port Diameter: 1.582″ (40mm) Mazda Inlet Bolt Diameter:M10mm Thru Holes Countersunk (comes with M10 x 1.5mm Low Heads Allen Heads) Mazda Inlet Bolt Pattern: Unequal 4 Bolt Spacing Mazda Inlet Port Shape: Single Round Port Fitment: Used to upgrade the OEM K03 A4 A6 Passat Turbocharger to K04 Mazda Speed 3/6 Turbocharger 2.3L Notes: Gaskets NOT included in listing (We now are offering Stainless Steel 304L flanges in all our current flanges or even custom….Contact us)