Sonnax Line Pressure Modulator Plunger Valve Kit

The Sonnax Line Pressure Modulator Plunger Valve Kit (also called a line pressure modulator valve and sleeve kit or EPC modulator valve kit) is a drop-in automatic transmission repair. It is designed to stop electronic pressure control (EPC) oil from leaking past a worn modulator bore. Worn OE modulator sleeves can cause soft shifts, intermittent harsh shifts, low line rise and low EPC pressure. This kit restores proper hydraulic control.

Key Features:

• Carbon steel sleeve resists excessive wear
• Hardened alloy steel valve improves wear resistance
• O-ring helps prevent EPC oil loss
• Annular grooves center the valve in the sleeve and reduce sideloading
• Improves shift firmness and consistency
• Drop-in Zip Valve parts install quickly and easily

Kit Contents:

• Plunger valve
• Sleeve
• O-ring

Sonnax offers this kit in several valve diameter options, from OE-replacement to heavy-duty and high-performance versions. Choose the option that suits your transmission and performance goals. Sonnax is a well-known name in transmission repair and performance parts. The kit helps restore consistent line pressure control and extend transmission life.