Number 22912B: The rear servo piston in Chrysler 47RH 47RE 1994 to1996 units can get wedged in the bore

$ 19.00


Fits ’94–’96 units. Verify OE piston by referring to image shown here.


  • Burnt bands
  • Pin bore wear
  • Rear servo piston sticking/breakage


Piston cocking in bore and pin bore wear inhibits band apply.


Restore normal servo operation by installing Sonnax rear servo piston.

The rear servo piston in Chrysler 47RH / 47RE 1994–1996 units can get wedged in the bore, causing bind in Reverse. Intermittent binding leads to bore wear and band damage. The improved design and material of Sonnax rear servo piston 22912B eliminates these concerns for consistent rear band apply.

  • Modified seal ridges prevent piston from sticking in case bore
  • Billet aluminum won’t crack like OE cast piston
  • 2.460″ O.D. piston

Additional information

Weight1 lbs
Dimensions6 × 6 × 5 in


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