GM 4L60-E, 4L65-E and 4L70-E transmissions often have trouble shifting into or holding 4th Gear due to excess wear in the sequence valve bore. This wear allows vital 4th Gear accumulator oil to exhaust, resulting in deficient servo apply pressure. Consequences are slipping or no 4th Gear operation followed closely by a burnt band. Leaking at the OE end plug also allows oil loss that can leave 4th Gear inoperable. Re-establish hydraulic control and restore normal operation by reconditioning the bore and installing Sonnax oversized 4-3 sequence valve kit 77964-04K.

O-Ringed end plug helps prevent 4th Gear oil loss
Hardcoat anodized aluminum valves combat premature wear

More From This Category

MANLEY Valve, Race Flo, Exhaust, 1.725 in. Head Dia, 0.3715 in. Stem Dia, 5.35 in. Length, BBC, Each

MANLEY Valve, Race Flo, Exhaust, 1.725 in. Head Dia, 0.3715 in. Stem Dia, 5.35 in. Length, BBC, Each

$47.58

MANLEY Valve, Titanium, Intake, Bead Loc, 2.205 in. Head Dia, 0.3135 in. Stem Dia, 5.19 in. Length, For Chevrolet LS7, Set of 8

MANLEY Valve, Titanium, Intake, Bead Loc, 2.205 in. Head Dia, 0.3135 in. Stem Dia, 5.19 in. Length, For Chevrolet LS7, Set of 8

$3,037.65

MANLEY Valve, Severe Duty, Intake, 2.35 in. Head Dia, 0.3415 in. Stem Dia, 5.61 in. Length, Each

MANLEY Valve, Severe Duty, Intake, 2.35 in. Head Dia, 0.3415 in. Stem Dia, 5.61 in. Length, Each

$78.54

MANLEY Valve, Titanium, Intake, 2.125 in. Head Dia, 0.3415 in. Stem Dia, 5.14 in. Height, Set of 8

MANLEY Valve, Titanium, Intake, 2.125 in. Head Dia, 0.3415 in. Stem Dia, 5.14 in. Height, Set of 8

$2,421.90

Sonnax Boost Valve Kit, Ford, Fd C6, Diesel Ratio, Each

Sonnax Boost Valve Kit, Ford, Fd C6, Diesel Ratio, Each

$85.70

MANLEY Valve, Titanium, Intake, Bead Loc, 2.125 in. Head Dia, 0.3415 in. Stem Dia, 5.44 in. Height, Each

MANLEY Valve, Titanium, Intake, Bead Loc, 2.125 in. Head Dia, 0.3415 in. Stem Dia, 5.44 in. Height, Each

$302.72