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 USA ( not Cast or A38)
- Thickness: 1/2 inch (.500″) or (12.7mm)
- T3 Bolt Diameter: M10 x 1.50 mm Threaded
- T3 Bolt Pattern: 1.74″ x 3.39″ (44mm x 86mm)
- T3 Port Shape: Undivided Single Port
- T4 Bolt Diameter: M10 Countersunk Thru Holes included Low Profile Allen Heads M10 x 1.50mm
- T4 Bolt Pattern: 2.75″ x 3.25″ (70mm x 82mm)
- T4 Port Shape:Divided Twin Scroll Ports
- Fitment: Used to bolt a T3 Undivided Turbocharger to a T4 Divided Threaded Header Manifold with M10 x 1.50mm Threads
- Notes: Gaskets NOT included in listing
(We now are offering Stainless Steel 304L flanges in all our current flanges or even custom….Contact us)










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