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 over hundreds of flanges in our system for adapting to most applications plus no 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
  • K03 Bolt Spacing:  Unequal Bolt Spacing
  • K03 Port Diameter: 1.582" (40mm)
  • T25 Inlet Bolt Diameter: M8 x 1.25mm Threaded
  • T25 Inlet Bolt Pattern: 1.58" x 2.87" (40mm x 72mm)
  • T25 Inlet Port Shape: Single Undivided Port
  • Fitment: Used to upgrade the OEM K03 Turbocharger to a larger T25 T28 GT28 Turbocharger
  • Notes:  Bolts and Gaskets NOT included in listing

(We now are offering Stainless Steel 304L flanges in all our current flanges or even custom....Contact us)