Transmission Parts Ford 4R75W 4R70W 4R70E 4R75E Valve Body Valve / Sleeve

Symptoms:

4-3 Neutral
No 4th
Burnt OD band

Cause:

Wear at the inside diameter of the overdrive servo regulator boost valve sleeve due to constant oscillation allows valuable overdrive oil to leak.

Correction:

Install Sonnax drop-in overdrive servo regulator kit to provide better sealing at all temperature ranges.

4R70E, 4R70W, 4R75E, 4R75W

Overdrive Servo Regulator Kit
Part No. 76948-29K

Fits '01-later units.

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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 inside diameter of the overdrive servo regulator boost valve sleeve due to constant oscillation. Excess wear allows valuable overdrive oil to leak, preventing the proper regulation of the overdrive servo. Sonnax overdrive servo regulator kit 76948-29K maintains critical tolerances that re-establish the hydraulic integrity of the circuit.

Hardcoat anodized aluminum valve and high grade aluminum sleeve combat premature wear
Closely toleranced sleeve improves sealing
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

Contents

Valve
Sleeve

Valve Body Layout

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.