The steel OE valve in Toyota/Lexus A340, 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 will restore proper operation.
January 16, 2014
Topics: Identification Guides Transmission Toyota/Lexus A340E Transmission A340F TransmissionRead Now
September 30, 2005
Topics: Diagnostics And Theory TransmissionRead Now
Contact a Sonnax Parts Distributor.