Forward clutches in Ford 6R140 transmissions are applied in 1st through 4th Gears in conjunction with other clutches. As the forward clutch regulator valve oscillates and strokes over time, bore deterioration results, allowing pressure loss that prevents proper hydraulic control of the forward clutches. This can cause no or delayed Forward, slipping, fluid overheat, burnt clutches, ratio or solenoid codes and failsafe operation.
Reconditioning the bore and installing Sonnax oversized forward clutch regulator valve kit 126740-13K restores normal shift operation and clutch control for revived forward operation.

New spring matches OE calibration
Hardcoat anodized aluminum valve combats premature wear

More From This Category

Sonnax Boost Valve Kit, AOD, Each

Sonnax Boost Valve Kit, AOD, Each

$77.44

COMP Cams Valve, Sportsman, Stainless Steel, Intake, For Chevrolet Small Block, 2.080 in. Head, 5.111 in. Length, Each

COMP Cams Valve, Sportsman, Stainless Steel, Intake, For Chevrolet Small Block, 2.080 in. Head, 5.111 in. Length, Each

$33.56

MANLEY Valve, Race Master, Exhaust, 32.0mm Head Dia, 0.313 in. Stem Dia, 4.405 in. Length, Volkswagen, Set of 4

MANLEY Valve, Race Master, Exhaust, 32.0mm Head Dia, 0.313 in. Stem Dia, 4.405 in. Length, Volkswagen, Set of 4

$190.33

MANLEY Valve, Race Master, Intake, 37mm Head Dia, 0.275 in. Stem Dia, 5.339 Length, For Ford, Set of 8

MANLEY Valve, Race Master, Intake, 37mm Head Dia, 0.275 in. Stem Dia, 5.339 Length, For Ford, Set of 8

$408.60

MANLEY Valve, Race Master, Intake, 43.7mm Head Dia, 0.313 in. Stem Dia, 4.405 in. Length, Volkswagen, Set of 4

MANLEY Valve, Race Master, Intake, 43.7mm Head Dia, 0.313 in. Stem Dia, 4.405 in. Length, Volkswagen, Set of 4

$190.33

MANLEY Valve, Titanium, Intake, Bead Loc, 2.1 in. Head Dia, 0.3415 in. Stem Dia, 5.44 in. Height, Each

MANLEY Valve, Titanium, Intake, Bead Loc, 2.1 in. Head Dia, 0.3415 in. Stem Dia, 5.44 in. Height, Each

$302.72