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