Toyota/Lexus vehicles equipped with an A130, A131 and A140 transaxle may exhibit insufficient line rise in the drive ranges and excessively high pressures in Reverse. This may be caused by extreme wear of the boost sleeve. Wear allows TV oil to exhaust through the manual valve in drive ranges and Reverse oil can enter the TV circuit, forcing the pressure regulator valve into a high pressure position. Sonnax boost valve kits 89010-01K and 89010-02K will restore the hydraulic integrity of these circuits by preventing cross leakage.

• Sleeves are made from high-quality aluminum for better wear resistance
• Hardcoat anodized aluminum valve combats premature wear
• Drop-in Zip Valve™ parts install quickly and easily