Symptoms:

  • B Clutch breakage
  • Erratic line pressure
  • Poor shift quality
  • Delayed Reverse
  • No Reverse

Cause:

Excessive valve and bore clearance due to wear.

Correction:

Sonnax oversized valve corrects valve-to-bore clearances and also prevents future wear in this area.

ZF5HP19

Oversized Pressure Regulator Valve
Part No. 85755-01

Fits early (E17) valve body.


You need this if... View Instructions Find a Distributor

Transmissions with a ZF5HP19 can experience erratic line pressure, poor shift quality, Reverse complaints and B clutch breakage due to excess wear in the main pressure regulator valve bore. After reconditioning the bore, installing Sonnax oversized pressure regulator valve 85755-01 will restore hydraulic integrity for proper line pressure control in all ranges.

  • Oversized valves have annular oil grooves to support the valve and reduce wear rate
  • Salvages valve body castings

There are two types of ZF5HP19 valve bodies. Version 1, the E17, has a valve with four spools on it, and the speed sensor is mounted on the valve body. Version 1 is used in Audi & VW units only. Version 2, the E18.2, has a valve with five spools on it, and the speed sensor is mounted on the transmission case. Version 2 is used in Audi, VW & BMW units.

  • ZF5HP19 Oversized Pressure Regulator Valve 85755-01
  • ZF5HP19 Oversized Pressure Regulator Valve 85755-01
  • ZF5HP19 Oversized Pressure Regulator Valve 85755-01 details

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

ZF5HP19 Oversized Pressure Regulator Valve Vacuum Test Locations