The steel OE valve in Toyota/Lexus A340 and A340E/F/H Type 1 transmissions moves within the cast aluminum sleeve, wearing the sleeve. After this wear becomes severe, the valve no longer operates properly, causing soft upshifts and delayed engagement. Sonnax boost valve kit 97855-23K restores hydraulic integrity and prevents cross-leaks.

Sleeve 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

Learn More About Zip Valve™ Drop-In Repairs

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