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Wehrli Custom Fab S400 Compressor Outlet O-Ring Seal (5.9L) WCF203-21

$1.93 $1.99
-3%
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Wehrli Custom Fab S400 Compressor Outlet O-Ring Seal (5.9L) WCF203-21
$1.93 $1.99
$1.93 $1.99

The Wehrli Custom Fab WCF203-21 is a precision replacement O-ring seal designed specifically for Borg Warner S400 turbocharger compressor cover outlet v-band flanges. This seal ensures a reliable, airtight connection at the compressor discharge, preventing boost leaks that can degrade engine performance and turbocharger efficiency.

This O-ring is a direct replacement for seals used in various WCFab turbocharger systems, including single turbo installs and compound turbo configurations for Cummins and LB7 Duramax applications.

  • Fits Borg Warner S400 compressor cover outlet v-band flanges
  • Maintains critical seal at the turbocharger discharge point
  • High-temperature resistant material for turbocharger environments
  • Manufacturer Part Number: WCF203-21

Direct Replacement for the following WCFab Kits:

  • LB7 Duramax S400 Single Turbo Install Kit (WCF100489)
  • 2004.5-2007 5.9L Cummins S400 High Mount 2nd Gen Swap Kit (WCF100486)
  • 2003-2007 5.9L Cummins S400/Stock Twin Turbo Kit (WCF100567)
  • 2003-2007 5.9L Cummins S400/S400 Side by Side Compound Turbo Kit (WCF100580)

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