Transmission Parts Toyota/Lexus U760F U760E Valve Body Valve / Sleeve

Symptoms:

Delayed Reverse
Low line rise in Reverse
B2 Clutches burned
UD/B3 Clutches burned
Low Reverse boost
No Reverse
B4 Clutch burned
Reverse slip

Cause:

Continuous oscillation of OE steel boost valve within aluminum sleeve results in sleeve bore wear and loss of proper Reverse pressure.

Correction:

Recover hydraulic control and renew Reverse performance by installing Sonnax drop-in Reverse boost valve kit.

U760E, U760F

Reverse Boost Valve Kit
Part No. 47740-38K

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Vehicles with Toyota/Lexus U760E and U760F transmissions may exhibit insufficient line rise in Reverse, delayed or slipping Reverse, and/or burned C3, B1, and B4 clutches. Continuous oscillation of OE steel boost valve within aluminum boost sleeve causes premature wear, creating a path for boost pressure to exhaust. Installing improved material Sonnax Reverse boost valve kit 47740-38K restores the hydraulic integrity of the boost circuit to recover normal Reverse operation.

Restores proper line rise
Annular grooves help center valve in bore to reduce future side-load wear
Hardcoat anodized aluminum valve combats premature wear
Sleeve manufactured from highly wear-resistant aluminum to prevent excess wear and leakage
Drop-in Zip Valve^™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

Contents

Valve
Sleeve

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.