T4 Divided Header To T6 Twin Scroll Turbo Fits K31 Borg S400 S475 S488 3/4″ USA

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. The turbo adapters’ ports are all ballmilled to improve flow smoothly from one port shape to the other reducing resistance andturbulence. Wealsoeven 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: Mild Steel 1018 CR ( not Cast ) Thickness: 3/4 inch (.750″) or (19mm) T4 Inlet Bolt Diameter:)M10 or 3/8″ Countersunk Thru Holes (Allen Head Style) T4 Inlet Bolt Spacing: 2.75″ x 3.25″ ( 70mm x 83mm) T4 Inlet Port Shape:Twin Scroll Divided Ports T6 Inlet Bolt Diameter: M10 x 1.50mm Threaded Holes T6 Inlet Bolt Spacing: 2.75″ x 4.44″ (70mm x 112mm) T6 Inlet Port Shape: Twin Scroll Divided Ports Fitment: Used to bolt a T6 Divided Turbocharger to a T4 Divided Threaded Header Manifold Notes: Gaskets NOT included in listing (We now are offering Stainless Steel 304L flanges in all our current flanges or even custom….Contact us)