Symptoms:

  • Delayed Forward
  • Shift concerns
  • Low line pressure
  • No lockup

Cause:

Continuous oscillation of the pressure reducing valve causes valve body bore wear, resulting in diminished solenoid feed pressure and a multitude of drivability complaints.

Correction:

The Sonnax pressure reducing valve kit contains a highly wear-resistant sleeve and valve assembly that restores hydraulic sealing and prevent critical solenoid feed oil loss.

A4CF1, A4CF2

Pressure Reducing Valve Kit
Part No. 84741-10K


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

Hyundai and Kia vehicles with an A4CF1, A4CF2 transmission may exhibit a multitude of drivability complaints that can be caused by severe wear at the pressure reducing valve, allowing critical solenoid feed pressure to exhaust. The Sonnax pressure reducing valve kit 84741-10K restores the proper hydraulic clearance between the valve and bore, and prevents future wear.

  • Parts are made from highly wear-resistant materials
  • Kit restores hydraulic clearance
  • Spring restores OE pressures
  • Sleeve
  • Valve
  • Spring
  • Retaining Clip

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.

Hyundai/Kia A4CF1/2 Valve Body Layout

Hyundai/Kia A4CF1/2 Valve Body Layout
  • A4CF1, A4CF2 Pressure Reducing Valve Kit 84741-10K
  • A4CF1, A4CF2 Pressure Reducing Valve Kit 84741-10K

You need this if...

A vacuum test at the port indicated fails to hold at least 18 in-Hg.

A4CF1, A4CF2 Pressure Reducing Valve Kit Vacuum Test Locations