Sonnax Line Pressure Modulator Plunger Valve Kit E4OD 4R100

Sonnax Line Pressure Modulator Plunger Valve Kit for E4OD, 4R100 Ford E4OD and 4R100 transmissions may experience issues such as soft 1-2 or 2-3 shifts, intermittent harsh shifts, or poor line pressure rise. These problems are often caused by ECU (electronic control unit) or accumulator pressure issues, with severe wear of the line pressure modulator sleeve being a common culprit. This wear can lead to EPC (electronic pressure control) oil leakage, resulting in soft shifts or causing the valve to stick, leading to harsh shifts. The Sonnax line pressure modulator plunger valve kit 36948-05K effectively addresses these issues by eliminating oil loss and restoring proper valve function. Key Features: Carbon steel sleeve construction to prevent excessive wear. Hardened alloy steel valve for enhanced wear resistance. O-Ring prevents EPC oil loss, maintaining optimal pressure. Annular grooves in the valve help center it in the sleeve, reducing sideloading. Improves shift firmness and consis