Symptoms:

  • Soft shifts
  • Clutch failure
  • Harsh shifts
  • Low line pressure
  • High line pressure

Cause:

Continuous oscillation of the pressure regulator valve causes valve body bore wear, resulting in line pressure irregularities and valve instability.

Correction:

Sonnax oversized pressure regulator valve kit combines a sleeved balance spool to eliminate the wear preventing proper valve stroke, and a modified pressure regulator valve with lengthened spools to increase sealing contact and provide greater stability.

A4CF1, A4CF2

Oversized Pressure Regulator Valve Kit
Part No.84741-03K


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

Continuous oscillation of the pressure regulator valve in Hyundai/Kia A4CF1, A4CF2 transmissions cause valve body bore wear, resulting in line pressure irregularities and valve instability. Sonnax oversized pressure regulator valve kit 84741-03K fixes these issues by combining a sleeved balance spool to eliminate the wear preventing proper valve stroke, and a modified pressure regulator valve with lengthened spools to increase sealing contact and provide greater stability.

  • The balance sleeve and valve assembly eliminates wear to allow proper stroking of the valve, has lengthened bore engagement for greater sealing integrity, and is made from wear-resistant materials for durability
  • The pressure regulator valve has lengthened spools at critical locations to increase sealing contact for better pressure regulation and valve stability
  • A new spring is included to restore OE pressure specifications and work with the lengthened pressure regulator valve
  • Balance Sleeve
  • Balance Valve
  • Retaining Clip
  • O-Rings (2)1 extra
  • Pressure Regulator Valve
  • Spring

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大号Pressure Regulator Valve Kit 84741-03K
  • A4CF1, A4CF2大号Pressure Regulator Valve Kit 84741-03K

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. If poor vacuum results are discovered at the OE pressure regulator valve, Sonnax PR valve kit [84741-01K] should be installed.

A4CF1, A4CF2大号Pressure Regulator Valve Kit Vacuum Test Locations