Sonnax 27741-04K B1 Apply Control Plunger Kit

The Sonnax 27741-04K B1 Apply Control Plunger Kit is a precision-engineered valve body component designed to restore proper hydraulic control in Toyota and Lexus automatic transmissions. This kit addresses worn B1 brake apply control valves that can cause shifting issues and reduced brake performance.

Key Features:

• Hardcoat anodized aluminum valve construction for maximum wear resistance
• Annular grooves precisely position the apply control valve for optimal oil flow
• Allows apply oil to properly route through the control valve to feed the B1 brake
• Drop-in replacement design requires no special tools for installation
• Wear-resistant materials restore proper valve function and hydraulic pressure

Applications:

• Toyota U151E, U151F transmissions
• Toyota U250E transmissions
• Lexus vehicles equipped with compatible transmission models

This genuine Sonnax valve body kit helps eliminate drivability concerns related to B1 brake control issues, restoring smooth shifting and proper clutch engagement. The hardcoat anodized finish provides superior durability compared to stock components, preventing premature wear and extending service life.