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  • TCC apply & release concerns
  • Restricted cooler flow
  • Restricted lube flow


Severe wear of the TCC control plunger valve sleeve due to continuous oscillation.


The tightly controlled tolerances and upgraded materials on this replacement plunger valve and sleeve assembly restore proper hydraulic control and reduce wear.

09A, JF506E

TCC Control Plunger Valve Kit
Part No. 122892-01K

View Instructions

Vehicles with a JF506E transmission may exhibit TCC apply and release problems and reduced cooler/lube flow. These complaints can be caused by severe wear of the TCC control plunger valve sleeve. Regulated apply pressure entering the sleeve will be allowed to exhaust without properly stroking the control valve. Sonnax has developed a tightly toleranced control plunger valve and sleeve, 122892-01K, that restores hydraulic integrity to properly position the control valve. The material has been upgraded from the OE steel parts to a highly wear-resistant aluminum alloy sleeve and hard-coat anodized aluminum plunger valve to prevent future wear.

  • Precision sleeve is manufactured from highly wear-resistant aluminum.
  • Hard-coat anodized plunger valve resists wear.
  • Plunger Valve
  • Sleeve
  • 122892 01k combo
  • 122892 01k