Toyota/Lexus vehicles with U140E, U140F, U240E and U241E transmissions may exhibit insufficient line rise in the drive ranges, excessively high pressures in Reverse and shift issues. This may be caused by continuous oscillation of the pressure regulator valve and boost valves causing severe wear. Sonnax oversized pressure regulator and boost valve kit 57917E-08K has upgraded materials to prevent wear and minimal clearances to restore proper hydraulic control.

A new spring is included to work with the oversized valve and re-establish OE regulated pressure specifications
Kit includes an increased ratio boost valve assembly specially designed to work with the oversized regulator valve

More From This Category

Sonnax Oversized Lockup Relay Valve Kit, Aisin Aw, Aw55-50Sn, Aw55-51Sn, Each

Sonnax Oversized Lockup Relay Valve Kit, Aisin Aw, Aw55-50Sn, Aw55-51Sn, Each

$106.67

MANLEY Valve, Pro Flo, Intake, 2.055 in. Head Dia, 0.3415 in. Stem Dia, 5.111 in. Length, SBC, Set of 8

MANLEY Valve, Pro Flo, Intake, 2.055 in. Head Dia, 0.3415 in. Stem Dia, 5.111 in. Length, SBC, Set of 8

$607.34

MANLEY Valve, Titanium, Intake, Bead Loc, 2.15 in. Head Dia, 0.3415 in. Stem Dia, 5.34 in. Length, Each

MANLEY Valve, Titanium, Intake, Bead Loc, 2.15 in. Head Dia, 0.3415 in. Stem Dia, 5.34 in. Length, Each

$302.72

MANLEY Valve, Race Master, Exhaust, 1.94 in. Head Dia, 0.3415 in. Stem Dia, 5.522 in. Length, BBC, Set of 8

MANLEY Valve, Race Master, Exhaust, 1.94 in. Head Dia, 0.3415 in. Stem Dia, 5.522 in. Length, BBC, Set of 8

$380.66

MANLEY Valve, Race Master, Intake, 37mm Head Dia, 0.2355 in. Stem Dia, 4.722 Length, For Ford 5.0L, Set of 8

MANLEY Valve, Race Master, Intake, 37mm Head Dia, 0.2355 in. Stem Dia, 4.722 Length, For Ford 5.0L, Set of 8

$408.60

MANLEY Valve, Budget Replacement, Intake, 2.02 in. Head Dia, 0.3415 in. Stem Dia, 4.88 in. Length, SBC, Each

MANLEY Valve, Budget Replacement, Intake, 2.02 in. Head Dia, 0.3415 in. Stem Dia, 4.88 in. Length, SBC, Each

$18.76