This BOOST Products stainless steel flange is for fabricating a downpipe at the turbine outlet of a BorgWarner AirWerks S200 or Holset Super HX40 with a 14cm² housing.
Fitment Information
- BorgWarner AirWerks S200 turbo outlet, including part numbers 317222 and 317246
- Holset Super HX40 with 14cm² turbine housing
Important Fitment Notes
- Confirm the turbine outlet pattern and dimensions before ordering, especially if the turbo or housing has been changed.
- The flange has unthreaded 8.8mm holes for M8 hardware. Threads are not cut into the flange.
- For custom downpipe fabrication. Welding and exhaust fabrication are required.
Key Features
- Fits the specified AirWerks S200 and Holset Super HX40 turbine outlets
- CNC-machined stainless steel flange
- Flat machined surface for the downpipe connection
- 10mm material thickness
Specs
- Part number: FL-HX-40
- Material: Stainless steel 1.4301 / SS304
- Thickness: 10mm
- Cutout diameter: 67mm
- Diagonal hole spacing: 101.6mm
- Hole diameter: 8.8mm, unthreaded, for M8 hardware
- Barcode: 4250815853841
- Warranty: Lifetime limited warranty for the original purchaser, subject to BOOST Products USA warranty terms.
Product Description
Use this flange to build a custom downpipe that connects to the turbine outlet. It is CNC machined from 10mm-thick 304 stainless steel and has a 67mm cutout. The mounting holes are 8.8mm in diameter and do not have threads, so use compatible M8 hardware.
The listed applications are the BorgWarner AirWerks S200 outlet, including turbo part numbers 317222 and 317246, and the Holset Super HX40 with a 14cm² turbine housing. Check the outlet dimensions on your turbo before welding the flange to the downpipe.
Pairs Well With
- BOOST Products 304 Stainless Steel Interlock Exhaust Flex Pipe
- BOOST Products 15° Stainless Steel Pie Cut with Spigot
- Vibrant Performance V-Band Flange Assembly
About
BOOST Products develops aftermarket parts for engine intake and exhaust systems, including turbocharger accessories, stainless piping, elbows, clamps, and fabrication components. The company says its products are designed and tested in Germany, with BOOST Products distributed in Europe since 2012. This flange is part of its turbo and exhaust fabrication range.
Redline360 sells only genuine and authentic BOOST Products parts.

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