Symptoms:

  • Delayed Forward
  • Harsh Reverse
  • Erratic line pressure
  • 2-3 Harsh
  • Low converter & lube flow
  • Burnt clutches
  • Excess clutch apply pressure
  • Delayed Reverse
  • Reverse slip

Cause:

OE boost sleeve and pressure regulator bore deterioration allows pressure loss that leads to driveability concerns.

Correction:

Recover hydraulic control and renew transmission performance by reconditioning the bore and installing Sonnax oversized pressure regulator and boost valve kit.

JR710E, JR711E, JR712E, RE5R05A, RE7R01A

Oversized Pressure Regulator & Boost Valve Kit
Part No. 63741-01K

Also fits Kia A5SR1/A5SR2.


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

Transmissions listed above may exhibit insufficient line rise, resulting in delayed engagement, slipping in Reverse, poor shift quality, erratic line pressure and burnt clutches. These troubles can often be caused by wear in the OE pressure regulator valve bore and/or boost sleeve, which allows the pressure escape that provokes driveability concerns. Reconditioning the bore and installing Sonnax oversized pressure regulator and boost valve kit 63741-01K eliminates pressure loss and revives line rise and shift quality in all ranges. Hardcoat anodized aluminum pressure regulator valve combats premature wear.

Replaces both early and late-style pressure regulators.

  • Pressure Regulator Valve
  • Spring
  • Boost Sleeve
  • Boost Valve

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.

Jatco/Nissan RE5R05A Valve Body Layout

Jatco/Nissan RE5R05A Valve Body Layout
  • JR710E, JR711E, JR712E, RE5R05A, RE7R01A Oversized Pressure Regulator & Boost Valve Kit 63741-01K
  • JR710E, JR711E, JR712E, RE5R05A, RE7R01A Oversized Pressure Regulator & Boost Valve Kit 63741-01K

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.

JR710E, JR711E, JR712E, RE5R05A, RE7R01A Oversized Pressure Regulator & Boost Valve Kit Vacuum Test Locations