Symptoms:

  • Broken parts due to excessive line pressure
  • Erratic line pressure
  • High line pressure
  • Restricted converter/lube flow

Cause:

Excess pressure regulator sleeve wear allows fluid loss and/or causes valve hang-up, preventing normal line pressure control.

Correction:

Restore appropriate line pressure in all ranges by installing wear-resistant Sonnax pressure regulator sleeve.

Warning:

Verify OE valve & sleeve measurements before use.

ZF6HP19, ZF6HP26, ZF6HP32

Pressure Regulator Sleeve
Part No. 95740-79

Fits units with 053 separator plate only.

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

Vehicles equipped with ZF6HP19, ZF6HP26 and ZF6HP32 transmissions often develop erratic or high line pressure due to excessive wear in the OE pressure regulator sleeve. This wear allows balance oil loss, preventing proper line pressure regulation. Without correct balance oil pressure, the pressure regulator valve will be out of its desired position, resulting in line pressure instability and possibly restricting cooler and lube flow. Installing Sonnax pressure regulator sleeve 95740-79 renews pressure regulator action for revived line pressure control in all ranges.

  • Manufactured from highly wear-resistant aluminum
  • No machining or special tools required

Kit is NOT compatible with ZF6HP21/28/34 (Gen.2) units. To differentiate between Gen. 1 and Gen. 2 valve bodies, see ZF Identification Guide.

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

ZF6HP19/26/32 (Gen. 1) with 053 Separator Plate Valve Body Layout

ZF6HP19/26/32 (Gen. 1) with 053 Separator Plate Valve Body Layout
  • ZF6HP19, ZF6HP26, ZF6HP32 Pressure Regulator Sleeve 95740-79
  • ZF6HP19, ZF6HP26, ZF6HP32 Pressure Regulator Sleeve 95740-79
  • ZF6HP19, ZF6HP26, ZF6HP32 Pressure Regulator Sleeve 95740-79 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.

ZF6HP19, ZF6HP26, ZF6HP32 Pressure Regulator Sleeve Vacuum Test Locations
ZF6HP19, ZF6HP26, ZF6HP32 Pressure Regulator Sleeve Vacuum Test Locations