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About Kibblewhite Fat Stem Black Diamond Intake Valve

Kibblewhite Fat Stem Black Diamond Intake Valve

  • Some late-model Twin Cam heads with 7. 0mm valves have a tendency to crack in the port of the valve guide boss
  • The Fat Stem valves have +. 005in. oversize stems for engine builders who need to re-establish the correct valve stem to guide clearance but do not want to create a crack or worsen an existing crack in the head by changing the valve guides
  • Valve guides MUST be reamed to set correct clearance, and a valve job should be performed to ensure proper sealing
  • Oversize portion of the valve stem does not extend into the keeper groove area, OEM valve keepers can be used
  • Sold each.

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