Sonnax 27741-13K Solenoid Modulator Valve Kit for Toyota/Lexus U151E U151F U250E Transmissions

The Sonnax 27741-13K Solenoid Modulator Valve Kit is an essential repair solution for Toyota and Lexus vehicles equipped with U150E, U151F, and U250E automatic transmissions. This precision-engineered valve kit addresses common transmission issues caused by wear in the solenoid modulator circuit.

Problem Solved:

In these Toyota/Lexus transmissions, excessive solenoid pressure causes line pressure to side-load the steel solenoid modulator valve. This side-loading action, combined with repeated oscillation of the valve, prematurely wears the cast aluminum bore. The resulting bore wear leads to pressure loss in critical hydraulic circuits, causing shift quality issues and torque converter clutch (TCC) concerns.

Solution:

The Sonnax 27741-13K kit includes a modified valve and high-grade aluminum sleeve that allow the worn bore to be refurbished. The upgraded components restore normal solenoid supply pressures and prevent future wear, eliminating the hydraulic pressure losses that cause transmission performance problems.

Helps Cure These Symptoms:

• Slips and flares during shifts
• Erratic shift feel and engagements
• Harsh upshifts and bind-up conditions
• Excess Reverse pressure and distorted valve body housings
• TCC cycling and TCC slip
• Low cooler flow and overheating

Installation Note:

Requires Sonnax tool kit F-27741-TL13 for proper installation (sold separately). The tool kit includes a reamer, reamer jig, and guide pin necessary to refurbish the valve body bore.

Applications:

Fits Toyota and Lexus vehicles with U150E, U151E, U151F, and U250E automatic transmissions, commonly found in Camry, RAV4, Highlander, ES250, ES300, RX330, and RX350 models.