Low Sprag Inner Race
4.0L (2.70" race diameter)
Sonnax low sprag inner race 56600B for Ford 4R44E, 4R55E, 5R44E, 5R55E and A4LD units is made of through-hardened AISI 52100 steel with longer, deeper cutting serrations to ensure a tight fit after installation.
Sonnax drill jig 56600-DJ is required to install this part. The jig allows for easy disassembly and installation of the inner race and eliminates the risk of damaging the case.