Toyota/Lexus vehicles with U151E, U151F and U250E transmissions may exhibit insufficient line rise in drive ranges and excessive high pressures in Reverse. This may be caused by continuous oscillation of the steel boost valve within the cast aluminum sleeve, creating excessive wear and a path for EPC and Reverse pressures to leak. Sonnax boost valve kit 27741-01K has upgraded materials and minimal clearances to prevent wear and restore proper hydraulic control.

Boost sleeve manufactured from highly wear-resistant billet aluminum to prevent the excessive wear exhibited by the cast OE sleeve
Restores proper line rise
Drop-in Zip Valve™ parts install quickly and easily
Hardcoat anodized aluminum valve combats premature wear

Learn More About Zip Valve™ Drop-In Repairs

More From This Category

MANLEY Valve, Race Master, Exhaust, Bead Loc, 1.575 in. Head Dia, 0.3125 in. Stem Dia, 4.845 in. Length, For Chrysler HEMI, Set of 8

MANLEY Valve, Race Master, Exhaust, Bead Loc, 1.575 in. Head Dia, 0.3125 in. Stem Dia, 4.845 in. Length, For Chrysler HEMI, Set of 8

$400.37

MANLEY Valve, Race Flo, Intake, 33.0 mm Head Dia, 6 mm Stem Dia, 98.05 mm Length, For Toyota Supra, Each

MANLEY Valve, Race Flo, Intake, 33.0 mm Head Dia, 6 mm Stem Dia, 98.05 mm Length, For Toyota Supra, Each

$49.91

MANLEY Valve, Custom, Titanium, .3415 in. Stem Dia, Set of 8

MANLEY Valve, Custom, Titanium, .3415 in. Stem Dia, Set of 8

$2,293.03

MANLEY Valve, Race Master, Exhaust, Bead Loc, 38mm in. Head Dia, 0.313 in. Stem Dia, 4.606 in. Length, Volkswagen, Each

MANLEY Valve, Race Master, Exhaust, Bead Loc, 38mm in. Head Dia, 0.313 in. Stem Dia, 4.606 in. Length, Volkswagen, Each

$47.58

MANLEY Valve, Race Master, For Toyota 3UR-FE, 38.5mm Head Dia, Set of 8

MANLEY Valve, Race Master, For Toyota 3UR-FE, 38.5mm Head Dia, Set of 8

$391.24

MANLEY Valve, Severe Duty, Intake, 2.08 in. Head Dia, 0.3415 in. Stem Dia, 5.44 in. Length, SBC, Each

MANLEY Valve, Severe Duty, Intake, 2.08 in. Head Dia, 0.3415 in. Stem Dia, 5.44 in. Length, SBC, Each

$78.54