Sonnax 36948-05K Line Pressure Modulator Plunger Valve Kit - for E4OD 4R100

The Sonnax 36948-05K Line Pressure Modulator Plunger and Sleeve Kit is designed to eliminate oil loss problems in Ford E4OD and 4R100 transmissions. This precision-engineered kit addresses issues caused by severe wear of the line pressure modulator sleeve, which allows EPC (Electronic Pressure Control) oil to leak past the valve, resulting in soft shifts, harsh shifts, or poor line rise complaints.

Key Features:

• Sleeve manufactured from carbon steel to prevent excessive wear
• Plunger valve made from hardened alloy steel for superior wear resistance
• O-ring included to help prevent EPC oil loss
• Annular grooves center valve in sleeve and eliminate sideloading
• 0.372" diameter for large 8-cylinder applications
• Improves shift firmness and line pressure control

Kit Contents:

• Plunger valve
• Sleeve
• O-ring

This kit corrects common transmission problems including soft 1-2 or 2-3 shifts, intermittent harsh shifts, low EPC pressure, and low line rise issues. Sonnax offers this kit in multiple size variations to match different transmission wear conditions.