September 28, 2017
Ford 4R100 and E4OD transmissions often suffer Reverse issues, which can be a direct result of wear and scoring of the casting bore by the OE manual valve. The Sonnax oversized manual valve in kit 36947-13K has been engineered to overcome leakage and wear when installed in a reamed bore. A significant benefit of the Sonnax valve is an additional support spool that has cutouts to allow free fluid flow, but provides added engagement in the bore for additional support, particularly when the valve is extended to the Park and Reverse positions.
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.