Transmission Parts Toyota/Lexus U250E U151F U151E Valve Body Valve / Sleeve

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Symptoms:

2-3 Bind-up
4-3 Bind-up
B1 Clutches burned
Harsh 1 through 4 maneuver shifts
Erratic shift timing

Cause:

Wear of the B1 control valve in the aluminum sleeve.

Correction:

Sonnax drop-in B1 apply control plunger kit restores B1 control for up/down shifts.

U151E, U151F, U250E

B1 Apply Control Plunger Kit
Part No. 27741-04K

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The B1 brake in Toyota/Lexus U151E, U151F and U250E transmissions is applied in 2nd, 4th and 5th Gear. If there is excessive wear at the plunger valve sleeve, B1 brake oil is reduced. Sonnax B1 apply control plunger kit 27741-04K features annular grooves on hardcoat annodized aluminum valve to correctly position the apply control valve to allow apply oil through the control valve and to feed the B1 brake.

Plunger sleeve made of wear-resistant aluminum
Hardcoat anodized aluminum plunger valve, with annular grooves, combats premature wear
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

Contents

Plunger 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.