In Ford 4R100 and E4OD units, the Low/Reverse modulator plunger valve uses line pressure to control the position of the Low/Reverse modulator valve. Due to continuous oscillation of the plunger valve, wear occurs at the I.D. of the sleeve, allowing line pressure to leak to exhaust. The Low/Reverse modulator valve is prevented from properly supplying regulated line pressure to the Low/Reverse clutch, which can cause slippage, burnt clutches and loss of engine braking. Sonnax Low/Reverse modulator plunger valve kit 36947-06K renews critical clearances and restores normal clutch operation.

Sleeve is made from highly wear-resistant aluminum
Hardcoat anodized aluminum valve combats premature wear
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

More From This Category

MANLEY Valve, Titanium, Exhaust, Bead Loc, 1.625 in. Head Dia, 0.3415 in. Stem Dia, 5.95 in. Length, Each

MANLEY Valve, Titanium, Exhaust, Bead Loc, 1.625 in. Head Dia, 0.3415 in. Stem Dia, 5.95 in. Length, Each

$320.57

MANLEY Valve, Severe Duty, Exhaust, 1.6 in. Head Dia, 0.3415 in. Stem Dia, 5.565 in. Length, SBC, Each

MANLEY Valve, Severe Duty, Exhaust, 1.6 in. Head Dia, 0.3415 in. Stem Dia, 5.565 in. Length, SBC, Each

$75.93

MANLEY Valve, Custom, Titanium, .3110 in. Stem Dia, Set of 8

MANLEY Valve, Custom, Titanium, .3110 in. Stem Dia, Set of 8

$2,804.20

Trick Flow Valves, Intake, Stainless Steel, 2.190 in. Diameter, .344 in. Stem, 5.500 in. Length, Each

Trick Flow Valves, Intake, Stainless Steel, 2.190 in. Diameter, .344 in. Stem, 5.500 in. Length, Each

$56.52

MANLEY Valve, Pro Flo, Intake, 2.065 in. Head Dia, 0.372 in. Stem Dia, 5.218 in. Length, BBC, Set of 8

MANLEY Valve, Pro Flo, Intake, 2.065 in. Head Dia, 0.372 in. Stem Dia, 5.218 in. Length, BBC, Set of 8

$613.31

MANLEY Valve, Race Flo, Intake, 2.08 in. Head Dia, 0.3125 in. Stem Dia, 5.176 in. Length, For Chrysler HEMI, Each

MANLEY Valve, Race Flo, Intake, 2.08 in. Head Dia, 0.3125 in. Stem Dia, 5.176 in. Length, For Chrysler HEMI, Each

$50.05