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Impeller Hub

Part No.


Impeller Hub
  • Impeller Hub

  • Fd-90-140g_alt

Small_fd-90-140g Small_fd-90-140g_alt


Impeller Hub

Part No. FD-90-140G

  • Assembled Height: 2.672"
  • Height: 2.800"
  • Journal Dia.: 2.508"
  • Flange Outer Dia.: 4.500"
  • Material: Chromoly
  • PTO Drive: Internal Spline
  • Pump Drive Style: External Spline
  • Hub Mount: Flanged

Impeller hub failure is common in 6R140 converters regularly pushed to the limit. Sonnax offers flanged impeller hub FD-90-140G to replace worn or damaged hubs. Proprietary heat-treating delivers a high degree of hardness where the bearing rides, while forged chromoly ensures user-friendly welding. This new impeller hub also features an aftermarket first: hardened internal splines to support PTO drive.

  • Heat-treated external splines (pump drive)
  • Heat-treated internal splines (PTO)
  • Hardened journal diameter to OE specifications
  • Chromoly for user-friendly welds without cracking or warping
  • Oversized piloting diameter ensures proper alignment

Do not quench. Air-cool only after welding.