Sonnax FS-90-7G, the impeller hub for ZF5HP24 & ZF5HP30 converters is made of premium high-grade steel. The greater hardness of this hub is designed for use in late model applications where bearings instead of bushings are used in the pump. The journal diameter has been increased to eliminate pump noise for optimum performance.

Sonnax retainer repair ring FS-WS-1 can simplify the rebuild procedure for ZF Sachs captive clutch units in ZF5HP19 and ZF5HP24 converters. FS-WS-1 allows the rebuilder to keep the damaging heat of the re-weld process away from the seal area. It also simplifies the process of adjusting the clutch release clearance which is very critical on these units.

The retainer replair ring may also be used to salvage an early crimped style captive clutch with the crimped area damaged if you modify it by removing about .040" from the I.D. to match the O.D. of the cover tower, and by machining excess material off the staking tabs that extend above the thickness of the original retainer.

Sonnax offers clutch plate FS-CP-3TKR with friction rings bonded on each side for ZF5HP24 converters. This clutch plate is .030" thicker than the OE clutch plate, enabling rebuilders to skim-cut adjacent surfaces.