O/S TC PRESSURE VALVE KIT (8HP-SERIES)
# 121790K

Oversized TC Pressure Valve Kit

O/S TC PRESSURE VALVE KIT (8HP-SERIES)

Tool required


Symptoms:

  • Coastdown clunk
  • Harsh TCC apply
  • Excess TCC slip
  • TCC codes & overheating
  • TCC lining failure
  • Low lube oil flow
  • Low TCC release pressure

Cause:
Bore wear at the TC pressure valve causes erratic pressure that leads to drivability concerns.

Correction:
Eliminate the wear that causes TCC problems by reconditioning the bore and installing Sonnax oversized TC pressure valve kit.


Vehicles equipped with Chrysler 845RE and ZF8HP45, ZF8HP55 and ZF8HP70 transmissions may have TCC problems such as harsh apply, excess slip, lining failure and related trouble codes. These issues are often the result of bore wear at the TC pressure valve, which allows critical control pressure to escape the circuit. Leakage here can also cause a 2-1 downshift clunk and diminished lube oil flow. Reconditioning the bore and installing the Sonnax oversized TC pressure valve kit eliminates bore leakage for renewed TC and lube control.

  • Annular grooves help center valve in bore to reduce side-load wear
  • Hardcoat anodized aluminum valve combats premature wear

Contents:

  • Valve
  • End Plug
  • O-Rings (2) 1 Extra

SONNAX Installation Instructions

Type of Product: Sundry Parts
Qty Needed:
Years:
Alternative #:
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