Gasket distortion causes leakage at the low/reverse oil feed.
Steel shim prevents distortion and leakage at the feed port caused by mounting bolt pressure.
Install this new design steel shim and rubber grommet in place of the original gasket of either design. Do not replace a new-style OE gasket with an old style shim.
The root cause of low/reverse oil feed leakage is piston retainer distortion and gasket material relaxing around the clutch feed hole. This prevents a positive seal around the oil feed hole on the piston retainer. The Sonnax steel gasket will not distort. The rubber grommet provides positive sealing at the passage. A Chrysler production parts change included a redesigned piston retainer and gasket. The Sonnax new design steel shim can be used to replace early- or late-style gaskets.
Contact a Sonnax Parts Distributor.