OVERSIZE P/REGULATOR VALVE KIT GEN I
# 99788K

OVERSIZE P/REGULATOR VALVE KIT GEN I

Cannot be used in units that have a 053 separator plate. OE valve name: SYS.DR-V. Tool Required.

Symptoms:

  • Poor shift quality
  • Flare shifts
  • Harsh shifts
  • Erratic line pressure
  • Slips in Forward & Reverse
  • Delayed Reverse
  • No Reverse
  • TCC slip

Cause:
Excessive valve and bore clearance allows critical line pressure to exhaust causing high or low pressure depending on the location of the wear.

Correction:
The Sonnax oversized valve and tool kit restore the correct valve/bore clearances and line pressure control as well as prevent future wear in this area.


Wear is commonly found at different areas in ZF6HP19/26/32 (Gen. 1) and Ford 6R60/6R80 pressure regulator bores. Wear at the sleeve end causes high line pressure leading to broken drums, pistons or other parts, as well as restricted converter/lubrication flow. Wear at the spring end of the bore allows low line pressure and lube/TC fluid to exhaust leading to a burned converter clutch and premature bushing failure. The Sonnax oversized pressure regulator valve kit restores valve-to-bore or sleeve clearances so the pressure regulator valve can maintain correct pressures.

  • Hard-coat anodized aluminum valve resists wear
  • Alloy aluminum sleeve is significantly more wear-resistant than the OE sleeve
  • Salvages valve body castings

Note:
Kit is NOT compatible with ZF6HP19/26/32 (Gen.1) units with an 053 separator plate code or ZF6HP21/28/34 (Gen.2) units. 


Contents:

  • Valve
  • Sleeve

SONNAX Installation Instructions

Type of Product: Sundry Parts
Alternative #: