Sonnax salvaged OE piston/damper assembly GM-DA-8 can be used to replace damaged assemblies in GM 258mm LU (4T65-E) converters.
This hard-to-find salvaged piston/damper assembly can also be used with Sonnax piston plate GM-DA-7P and rivets GM-RV-9 to convert the viscous damper assembly in GM 265mm LU (4T80-E) units, which have a high failure rate due to leaks and cannot be repaired, to a mechanical spring-type damper.
GM-DA-8 can also be used for optional builds in Sonnax racekits GM-RK-16, GM-RK-17 and GM-RK-18.