Transmission Parts Toyota/Lexus U250E U151F U151E Valve Body Valve / Sleeve

Symptoms:

Soft shifts
Low line rise in Drive
High line pressure in Reverse

Cause:

Severe wear of the boost valve sleeve allows EPC and Reverse oil leakage.

Correction:

Sonnax drop-in boost valve kit has upgraded materials and minimal clearances to prevent wear and restore proper hydraulic control.

U151E, U151F, U250E

Boost Valve Kit
Part No. 27741-01K

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Toyota/Lexus vehicles with U151E, U151F and U250E transmissions may exhibit insufficient line rise in drive ranges and excessive high pressures in Reverse. This may be caused by continuous oscillation of the steel boost valve within the cast aluminum sleeve, creating excessive wear and a path for EPC and Reverse pressures to leak. Sonnax boost valve kit 27741-01K has upgraded materials and minimal clearances to prevent wear and restore proper hydraulic control.

Boost sleeve manufactured from highly wear-resistant billet aluminum to prevent the excessive wear exhibited by the cast OE sleeve
Restores proper line rise
Drop-in Zip Valve™ parts install quickly and easily
Hardcoat anodized aluminum valve combats premature wear

Learn More About Zip Valve™ Drop-In Repairs

Contents

Valve
Sleeve
End Plug

Valve Body Layout

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.