Common problems in Ford 4R70E, 4R70W, 4R75E and 4R75W transmissions include a burned overdrive band, loss of 4th Gear, and/or a 4-3-Neutral shift pattern. These problems can be caused by wear at the innermost diameter of the overdrive servo regulator valve due to constant oscillation. Excess wear allows valuable regulated overdrive oil to leak, preventing proper regulation of the overdrive servo. Sonnax oversized overdrive servo regulator valve kit 76948-59K maintains critical tolerances that re-establish the hydraulic integrity of the circuit.

Hardcoat anodized aluminum valve combats premature wear and maintains proper clearance at all temperature ranges
Closely toleranced sleeve improves sealing
Salvages valve bodies with wear of the overdrive servo regulator valve bore

More From This Category

Sonnax Clutch A Control Boost Valve Kit, Ford, ZF6Hp19/26/32, 6R60/75/80/100, Each

Sonnax Clutch A Control Boost Valve Kit, Ford, ZF6Hp19/26/32, 6R60/75/80/100, Each

$118.83

Sonnax Secondary Pulley Front Bearing, JF015E (Re0F11A), Each

Sonnax Secondary Pulley Front Bearing, JF015E (Re0F11A), Each

$100.06

Sonnax Boost Valve Kit, GM, 4L30E, Ar25, Ar35, Oe Code 264, Each

Sonnax Boost Valve Kit, GM, 4L30E, Ar25, Ar35, Oe Code 264, Each

$75.20

Sonnax Replacement Seal Kit, Ford, AOD, Each

Sonnax Replacement Seal Kit, Ford, AOD, Each

$13.48

Sonnax Friction Ring, 9.880in. X 8.750in. X .045", Hte Material, Each

Sonnax Friction Ring, 9.880in. X 8.750in. X .045", Hte Material, Each

$34.25

Sonnax Heavy Duty Throttle Valve Kit, Chrysler, 42-46-47Rh/Re, 48RE, 727, 904, Each

Sonnax Heavy Duty Throttle Valve Kit, Chrysler, 42-46-47Rh/Re, 48RE, 727, 904, Each

$75.05