Sleeve installation tool kit 56219-04K is no longer available from Sonnax. Check with your distributor for availability.
In Ford A4LD, 4R44E, 4R55E units, the forward clutch has two dynamic sealing rings that seal against the center support to isolate forward clutch apply oil. The aluminum center support is damaged by the sealing rings causing forward clutch oil leaks. Sonnax center support/forward clutch sleeve 56219-03K repairs worn center supports.