Transmission Parts Toyota/Lexus U660F U660E Valve Body Valve / Sleeve

Symptoms:

2nd & 6th Gear shift concerns
B1 Clutches burned

Cause:

Wear at the B1 apply boost valve and sleeve can allow the B1 apply control valve to stroke prematurely, resulting in 2nd and 6th Gear shift complaints and a burned B1 brake.

Correction:

This Sonnax drop-in B1 apply boost valve kit features upgraded materials and tighter clearances to prevent wear and restore proper hydraulic control.

U660E, U660F

B1 Apply Boost Valve Kit
Part No. 47740-19K

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Vehicles with Toyota/Lexus U660E and U660F transmissions may exhibit 2nd and 6th Gear shift complaints and a burned B1 brake. These problems may be caused by continuous oscillation of the steel B1 apply boost valve within the cast aluminum boost sleeve, creating excessive wear and a path for line pressure to exhaust and the B1 apply control valve to stroke prematurely.

Sonnax B1 apply boost valve kit 47740-19K 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

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.