Vehicles with listed Toyota/Lexus transmissions may exhibit converter apply/release complaints, slip codes, overheated fluid or a burned converter. These problems may be caused by continuous oscillation of the steel lockup control boost valve within the cast aluminum boost sleeve, creating excessive wear and a path for converter/cooler fluid to exhaust and the lockup control valve to stroke prematurely.
Sonnax lockup control boost valve kit 47740-06K has upgraded materials and minimal clearances to prevent wear and restore proper hydraulic control.

Boost sleeve is manufactured from highly wear-resistant billet aluminum to prevent excessive wear
Restores proper line rise
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

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