Ford E4OD and 4R100 units often display shifting irregularities which can be traced to problems with accumulator control valves. Wear ridges form as the valve moves in and out of the bore. Under high-pressure shifts, the valve is allowed to stroke too far, causing it to hang up on these ridges and block oil flow to the associated clutch. This results in soft shifts, loss of gear and burnt clutches. Sonnax 1-2 and 2-3 accumulator control valve kit 36948-13K resolves these issues and provides a firmer-than-OE shift quality.

The step machined into valve spool acts as an orifice to allow full oil flow to clutches when appropriate, preventing premature clutch failure
Reinforcement retaining clip attaches to OE clip to prevent over-stroking
Spring shims allow for selective increase of apply pressure to manipulate shift quality
Annular groove helps center valve in bore to prevent future side-load wear
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

More From This Category

MANLEY Valve, Race Master, Exhaust, 1.55 in. Head Dia., 0.3136 in. Stem Dia., 4.923 in. Length, For Chevrolet LS1, Each

MANLEY Valve, Race Master, Exhaust, 1.55 in. Head Dia., 0.3136 in. Stem Dia., 4.923 in. Length, For Chevrolet LS1, Each

$34.49

View
MANLEY Valve, Titanium, Intake, Bead Loc, 2.45 in. Head Dia., 0.3415 in. Stem Dia., 5.6 in. Length, Set of 8

MANLEY Valve, Titanium, Intake, Bead Loc, 2.45 in. Head Dia., 0.3415 in. Stem Dia., 5.6 in. Length, Set of 8

$1,826.93

View
MANLEY Valve, Race Flo, Intake, 2.1 in. Head Dia., 0.3415 in. Stem Dia., 5.14 in. Length, SBC, Set of 8

MANLEY Valve, Race Flo, Intake, 2.1 in. Head Dia., 0.3415 in. Stem Dia., 5.14 in. Length, SBC, Set of 8

$275.90

View
MANLEY Valve, Race Master, Intake, 38mm Head Dia., 0.275 in. Stem Dia., 5.339 Length, For Ford, Set of 8

MANLEY Valve, Race Master, Intake, 38mm Head Dia., 0.275 in. Stem Dia., 5.339 Length, For Ford, Set of 8

$296.10

View
MANLEY Valve, Custom, Titanium, .3415 in. Stem Dia., Each

MANLEY Valve, Custom, Titanium, .3415 in. Stem Dia., Each

$248.61

View
MANLEY Valve, Race Master, Intake, 40.5mm Head Dia., 0.313 in. Stem Dia., 3.976 in. Length, Volkswagen, Set of 4

MANLEY Valve, Race Master, Intake, 40.5mm Head Dia., 0.313 in. Stem Dia., 3.976 in. Length, Volkswagen, Set of 4

$137.94

View