The OE aluminum servo plugs wear and gall due to soft material and also are prone to break at the spring seat area.
Restore normal Reverse operation by installing Sonnax reverse servo piston plug kit.
There are two styles of the OE reverse servo piston plug in Chrysler RWD units:
Both versions of these OE aluminum plugs are subject to wear, galling, and breaking at the spring seat area due to high stresses in Reverse. Sonnax steel reverse servo piston plug kit 22912-01K won't break or wear like the OE plug and can be configured to work in both styles of RWD units.